171results about How to "Increase surface adsorption capacity" patented technology

The invention relates to a controlled / slow release polycarboxylate water reducing agent for inhabiting the aggregate mud content influence, which is characterized in that the controlled / slow release polycarboxylate water reducing agent comprises the following ingredients by weight parts: 75 to 95 parts of polycarboxylate water reducing agents, 2 to 5 parts of retarders and 5 to 25 parts of slow release agents. Because natural zeolite powder has the characteristics of microporous structure, large specific surface area and strong surface absorption capability, the natural zeolite powder can be used as the slow release agents. The invention utilizes the natural zeolite powder as the slow release agents, and the surface of the natural zeolite powder can absorb a large number of polycarboxylate water reducing agents and a small number of retarders after the natural zeolite powder is mixed with the polycarboxylate water reducing agents and the retarder. Clay can preferentially absorb the natural zeolite powder with strong surface absorption capability when the natural zeolite powder is doped into concrete to be stirred with gelled materials, aggregates and water, and the excessive absorption of the polycarboxylate water reducing agent by the clay is avoided, so the absorption of the polycarboxylate water reducing agents on cement grains and the dispersing effect taking are ensured.

The invention relates to a soil improvement technology and an environment protection technology and particularly discloses a biochar mixing type protected horticultural vegetable field soil heavy metal passivant and a preparation method thereof. The soil heavy metal passivant comprises the following components in percentage by weight: 50 to 60 percent of biochar, 5 to 10 percent of medical stone powder, 5 to 10 percent of diatomite powder, 10 to 20 percent of lignite and 10 to 20 percent of coal ash. The preparation method for the soil heavy metal passivant comprises the following steps of: mixing the medical stone powder which is screened by an 80-mesh sieve, the diatomite powder which is screened by an 80-mesh sieve, the lignite, and the coal ash which is screened by an 80-mesh sieve, uniformly stirring, mixing with biochar which is screened by a 20-mesh sieve, fully stirring, and mixing uniformly to prepare the soil heavy metal passivant. The soil heavy metal passivant is easy to prepare; and the effects of passivating the protected horticultural vegetable field soil heavy metal, and reducing the content of recyclable heavy metal of plant in soil can be achieved under the synergistic effects of all components.

A method to fabricate an optical scattering probe and the method includes the steps of a) depositing an conductive layer on a substrate followed by depositing a noble metal layer on top of the conductive layer and then an aluminum layer on top the noble metal layer; b) anodizing the aluminum layer to form a porous aluminum oxide layer having a plurality of pores; and c) etching the plurality of pores through the aluminum oxide layer and the noble metal layer for forming a nano-hole array. In a preferred embodiment, the step of etching the plurality of pores through the aluminum oxide layer and the noble metal layer further comprising a step of widening the pores followed by removing the aluminum oxide layer for forming a plurality of noble metal column on top of the conductive layer.

The invention relates to high temperature resistant amphoteric ion polymer fluid loss agent used for drilling fluid of a high temperature and high pressure drilling and a preparation method thereof. Four monomers, namely, acrylamide (AM), 2-acrylamide-2-methyl propane sulfonic acid (AMPS), dimethyl diallylammonium chloride (DMDAAC) and styrenesulfonate (SSS) are used as raw materials, wherein the mole ratio of AM:AMPS:DMDAAC:SSS is (9-11):(3-4):(0.5-1.5):(1.0-1.5); ammoniumpersulfate-sodium bisulfite as an initiator is added and solution is copolymerized through a polymerization method to compose the fluid loss agent. The fluid loss agent provided by the invention has the advantages of ideal high temperature resistant (more than 220 DEG C) reducing filtrate performance, shale inhibition performance and stable fluid rheology performance and simple preparation method, convenient operation and higher yield.

The rolled soft polyvinyl chloride film consists of basically polyvinyl chloride resin in 100 portions, heat stabilizer 2-4 portions, plasticizer 20-40 portions, lubricant agent 0.5-1.0 portions, andnanometer material 5-20 portions. Based on the requirement in service performance, the inorganic nanometer material and soft polyvinyl chloride are ground, high speed mixed, internally mixed, openlymixed and rolled, so that the nanometer material is dispersed in soft polyvinyl chloride substrate to obtain the inorganic nanometer material modified rolled soft polyvinyl chloride film, which has good plasticizer migration resistance, high strength and good temperature performance.

The present invention belongs to the field of inorganic metal oxide, and is especially process of preparing nanometer titania / silica photocatalyst sol and transparent photocatalyzing film. The anatase type nanometer titania / silica photocatalyst sol is prepared with inorganic low concentration titanium compound solution as material at normal pressure and 40-100 deg.c. The sol has high hydrophilicity, high photocatalyzing activity, high transparency and particle size of 15-30 nm. The sol may be painted onto substrate of different properties to form self-cleaning transparent photocatalyzing film with high hardness and high antifouling and antiseptic performance. The sol has high stability, small and homogeneous size and high performance; and the preparation process has low cost and simple operation and is suitable for large scale production and application.

The invention provides an opaque quartz crucible used in multicrystal silicon crystallization and a method for manufacturing the same. The crucible is of a regular square structure, and the compositions in mass ratio of the crucible are more than 99.7 Wt percent of silicon dioxide, less than 600ppm of aluminum oxide and less than 30ppm of ferric oxide. The method comprises the following steps: firstly, a raw material, i.e. high purity quartz is put into granulation equipment for wet method granulation, the grain size is controlled between 70 and 100mu m; then, slurry is fully stirred and then is fed into a gypsum mould under a pressure of between 2 and 3bar after being deposited for 24 to 48 hours; moreover, early grouting is assisted by slight vibration; the slurry is further settled for 5 to 8 hours, and is demoulded after fully dewatered; the slurry is dried inside a drier; and finally, a blank is put in a kiln for sintering so as to obtain the opaque quartz crucible. The proposal adopts grouting forming by a high-purity quartz material, and the sintered crucible has uniform inner structure; moreover, the crucible has excellent thermal shock stability and cracking resistance, and can meet the technological requirements for manufacturing multicrystal silicon cast ingots.

The invention discloses lithium-sulfur battery anode material comprising porous metal. The porous metal is compounded with lithium sulfide so as to be used as the anode material of the lithium-sulfur battery. The invention also discloses a preparation method of the lithium-sulfur battery anode material comprising the porous metal. According to the invention, by utilizing the characteristics of high electric conductivity, high porosity, high specific surface area and the like of the porous metal, elemental sulfur or the lithium sulfide is filled into pores of the porous metal, metal / sulfur composite material can be manufactured, and the utilization rate of the elemental sulfur and the lithium sulfide and the multiplying performance of the composite electrode can be increased; and simultaneously, by utilizing the strong interaction between the porous metal and the elemental sulfur or the lithium sulfide, the elemental sulfur, the lithium sulfide or polysulfide generated in a charge-discharge process can be more firmly attached on the surface of the porous metal, the dissolution of the polysulfide in an electrolyte, the shuttle effect caused by the dissolution of the polysulfide in the electrolyte and the deactivation on an anode and a cathode by redox product of the polysulfide can be restrained, and the circulation stability of a metal / sulfur composite electrode and the lithium-sulfur battery can be increased.

The invention relates to a qunatum carbon which comprises carbon particles with the particle size of 0.6-100nm, wherein the carbon particles are mono carbon and / or graphene particles; and the surface layer of the carbon particles contain carbon, hydrogen, oxygen and nitrogen compounds, which comprise condensed aromatics, compounds containing carbon-oxygen single bond, compounds containing carbon-oxygen double bond and compounds containing carbon-hydrogen bond. The invention also relates to a qunatum carbon solution which is a water solution containing qunatum carbon. The ORP of the qunatum carbon solution is 280-380mv, the electric conductivity sigma is 1-5ms / cm, the electromotive force is 280-380mv, the pH value is 1.5-3.2, and the concentration is 0.1-0.45%. The invention also relates to a device and method for preparing the qunatum carbon. The method has the advantages of simple technique, low cost, no generation of three wastes, uniform carbon particle size and stable product quality, is easy to control, and can easily implement large-scale production.

The invention provides a silver-loaded low-molecular-weight chitosan composite microsphere antibacterial agent and a preparation method thereof. Low-molecular-weight chitosan is used as a raw material, and a low-molecular-weight chitosan acetic acid solution, a silver nitrate solution and a vanillic aldehyde ethanol solution are mixed to form composite sol; then paraffin is used as a continuous phase, sorbitan monooleate and alkylphenol ethoxylates are used as a compound emulsifier, a silver / low-molecular-weight chitosan sol is used as a monomer, and sodium tripolyphosphate is used as a cross-linking agent for preparing an emulsion system for emulsification crosslinking, and finally washing and drying are performed, so that the silver-loaded low-molecular-weight chitosan composite microsphere antibacterial agent is obtained. Due to the fact that the low-molecular-weight chitosan is used as the raw material, nanometer silver particles can enter microspheres, and the antibacterial activity of the composite antibacterial agent is obviously improved. The obtained antibacterial agent has the broad-spectrum bactericidal activity, and has the efficient fatality rate for both escherichia coli and staphylococcus aureus.

The invention discloses a high-firmness honeycomb ceramic carrier and a preparation method thereof. Cordierite honeycomb ceramic is used as a base body; an aluminum oxide coating layer and a composite coating layer are arranged on the surface of the base body in sequence; by the total weight of the honeycomb ceramic carrier, the honeycomb ceramic carrier contains 85-95 percent of cordierite honeycomb ceramic, 2-7 percent of the aluminum oxide coating layer and 3-8 percent of the composite coating layer; by the total weight of the composite coating layer, the composite coating layer contains 40-80 percent of titanium dioxide, 5-35 percent of silicon dioxide, 1-10 percent of aluminum oxide and 10-40 percent of an auxiliary. The preparation method comprises the following steps: (1) immersing the cordierite honeycomb ceramic base body subjected to acid treatment into alumina sol for treatment, taking out the cordierite honeycomb ceramic base body, blowing away residual liquid, and drying and roasting to obtain the cordierite honeycomb ceramic base body loaded with the aluminum oxide coating layer; (2) soaking the carrier obtained by the step (1) in composite coating layer slurry for treatment, taking out the carrier, blowing away the residual liquid, and drying and roasting to obtain a final product. The coating layer load of the honeycomb ceramic carrier is large, the firmness is high, and the preparation technology is simple; the mechanical strength of the base body is not damaged; the high-firmness honeycomb ceramic carrier is suitable for industrial application.

The invention discloses a disc-shaped underwater vehicle based on vortex motion. A disc-shaped fairing is adopted. At least one circumferential propeller is arranged in the circumferential direction of the disc-shaped fairing. A vortex generating mechanism and at least one vertical propeller are arranged in the vertical direction of the disc-shaped fairing. The circumferential propellers are used for driving the motion of the vehicle in the horizontal plane of the disc-shaped fairing. The vertical propellers are used for driving the motion of the vehicle in the vertical direction of the disc-shaped fairing. The vortex generating mechanism is used for generating adsorption force relative to the absorption surface. According to the novel technology for achieving object surface absorption based on a vortex adsorption mechanism, the underwater vehicle is made to have high surface adsorption capacity; through the cooperation of the impelling action of the propellers, the vehicle has the omni-directional motion capacity including crawling and swimming, and compared with an existing crawling or swimming underwater vehicle, the disc-shaped underwater vehicle has the advantages that the sailing speed is high, and motion control is swift. An acquisition sensor and operation tools are carried as needed, and the disc-shaped underwater vehicle can be used for carrying out underwater engineering detection, emergency searching, construction operation and the like.

The invention relates to a preparation method of polyurethane pressure-sensitive adhesive composition and a polyurethane protective film. The preparation method is characterized by including 1000 parts of polyether polyol, 100-400 parts of modified isocyanate, 0.01-1 part of a catalyst, 0.05-10 parts of an antistatic agent and 500-2000 parts of solvent. The above mentioned components are mixed and coated on a substrate, and the polyurethane protective film with good performance can be obtained through first-step reaction at a temperature of 60 DEG C-130 DEG C. The provided preparation method of a polyurethane formula and the polyurethane protective film saves the previous prepolymerization process, raw material monomer is directly used in the process of catalytic reaction polymerization, cross-linking and soliding and forming, the rate of film formation is 100%, a large number of cost and time are saved, accuracy control of the protective film with stable quality is achieved, a configured tackiness agent mixed liquor can be stored at room temperature for a long time and certainly can be used immediately, and the operable time in a coating process is greatly extended.

The invention discloses a catalyst for catalytic combustion and a preparation method thereof. The catalyst takes cordierite honeycomb ceramics as a substrate, wherein a silicon-aluminum coating, a composite coating and an active ingredient are arranged on the surface of the substrate in sequence; based on the total weight of the catalyst, the catalyst contains 80 to 90 weight percent of the cordierite honeycomb ceramics, 2 to 9 weight percent of the silicon-aluminum coating, 3 to 10 weight percent of the composite coating, and 0.01 to 1 weight percent of the active ingredient, wherein the active ingredient is one or more of Pt, Pd, Rh, Ru and Ir, and preferably Pt or Pd; based on the total weight of the silicon-aluminum coating, the silicon-aluminum coating contains 10 to 50 weight percent of silicon dioxide and 50 to 90 weight percent of aluminum oxide; based on the total weight of the composite coating, the composite coating comprises 40 to 80 weight percent of titanium dioxide, 5 to 35 weight percent of silicon dioxide, 1 to 10 weight percent of aluminum oxide, and 10 to 40 percent of an auxiliary, wherein the auxiliary is selected from one or more of cerium oxide, zirconium oxide or lanthanum oxide. According to the catalyst for the catalysis of the combustion disclosed by the invention, the coating loading capacity is high; the firmness is high; the poisoning resistance and the activity of the catalyst are high; the preparation method is simple; therefore, the catalyst is suitable for industrial application.

The invention relates to a preparation method for sustained-release type volatile rust preventive paper. According to the invention, a halloysite nanotube of a hollow structure is used as a carrier, a volatile antirust agent is adhered on the surface of the carrier and loaded in the cavity of the carrier in virtue of strong adsorption ability of surfaces of the particles of the halloysite nanotube and the cavity structure, and a polyelectrolyte is used for coating, thereby obtaining a halloysite nanotube-volatile antirust agent compound; the halloysite nanotube-volatile antirust agent compound is compounded with a polymer emulsion, modified starch and the like, an obtained compound coats the surface of paper, and drying and press polish are carried out so as to obtain the volatile rust preventive paper with a sustained-release function. Since the volatile antirust agent is adhered on the surface of the halloysite nanotube and loaded in the cavity of the halloysite nanotube and coated by the polyelectrolyte, the release of the volatile antirust agent is controlled, so antirust time of the rust preventive paper is greatly increased; heat capacity of the volatile antirust agent is improved, so loss of the volatile antirust agent during preparation of the rust preventive paper is greatly reduced.

A process for preparing the nanoparticles of phthalocyanine sensitized TiO2 by in-situ hydrothermal method includes such steps as perparing the precurse liquid of TiO2 nanoparticles, and adding phthalocyanine as sensitizer while preparing TiO2 nanoparticles in hydrothermal condition. Its advantages are high dispersity and stability, high visual light catalytic activity and broadband.

The invention discloses a preparation method of a filter medium used for removing artificially synthesized musk in drinking water, which comprises the following steps of: a) mixing the raw materials containing activated carbon fiber powder, ultrahigh molecular weight polyethylene powder, nanometer silicon oxide powder, active alumina powder and a gas generation agent, wherein, the weight ratio ofthe activated carbon fiber powder, the ultrahigh molecular weight polyethylene powder, the nanometer silicon oxide powder, the active alumina powder and the gas generation agent is (100-300): (200-450): (80-200): (80-200): (50-150); and b) suppressing, sintering and cooling the obtained mixture in a mould. The prepared filter medium has high removal rate on the artificially synthesized musk in the drinking water, is suitable for being used in the drinking water polluted by the artificially synthesized musk, and can be used for avoiding the damage of the artificially synthesized musk on human bodies, and is simple in use and low in cost; and in addition, a filter element instead of a powder body is used, thus post-treatment is not needed; and the preparation method is suitable for treatinghome terminal drinking water; and through the detection, the removal rate of the filter medium on the artificially synthesized musk in the drinking water is over 95%.

A method to apply waterproof emulsified paraffin wax in fibreboard production includes emulsifying paraffin wax in water with emulsification additive to let paraffin wax solid content up to 40-50 % of being used as waterproofing agent, applying it in fibreboard production and drying all hydrophilic contents in emulsification agent off at drying process of 100-180 deg.C for achieving purpose of waterproof for fibre.

The invention discloses a hybrid material based on a macrocyclic compound photosensitive dye and titanium dioxide and a preparation method thereof, and application of the hybrid material to photocatalysis. The hybrid material comprises the macrocyclic compound photosensitive dye and titanium dioxide, wherein the macrocyclic compound photosensitive dye is a calixarene compound or porphyrin compound. The invention also discloses the preparation method for the hybrid material based on the macrocyclic compound photosensitive dye and titanium dioxide, and application of the hybrid material to photocatalysis. The organic-inorganic hybrid material prepared from the macrocyclic compound photosensitive dye and titanium dioxide has a hierarchical porous structure, and can improve the free diffusionof gas and surface adsorption of CO2, increase the adsorption quantity and activation degree of reactants, reduce the possibility of electron-hole recombination and effectively enhance photocatalysisefficiency. Moreover, the hybrid material of the invention has high stability and is improved in cyclic utilization stability in photocatalysis.

The invention discloses a preparation method for a nanogold-nanofiber functional composite modified electrode. The preparation method specifically comprises the following steps of (1) preparing a spinning solution; (2) performing electrostatic spinning to prepare composite nanofibers to form a composite nanofiber PA6-MCWNTs modified electrode; and (3) performing functionalization on composite nanofibers through electro-deposition nanogold, namely immersing the composite nanofiber PA6-MCWNTs modified electrode into deposition liquid containing HAuCl4, reducing HAuCl4 into nanogold by adopting a multi-potential step change method, and synchronously and directly depositing the nanogold on the surfaces of PA6-MCWNTs composite nanofibers, thus obtaining the nanogold / nanofiber functional composite AuNPs-PA6-MCWNTs modified electrode. The preparation method can be used for obtaining a functional composite electrode modified material with the characteristics of high stability, large specific surface area, high biological compatibility, high electron transmission rate, uniform nano diameter aperture distribution and the like.

A process for preparing the liquid containing carbon nanoparticles includes such steps as preparing deionized water, preparing graphite carbon plate as positive electrode, arranging two metal plates as negative electrode at both sides of graphite carbon plate, immersing them in said deionized water for 24 hr, applying a low voltage (3-35 v) for 7-10 days to obtain said liquid, laying aside for 24 hr, and ultrasonic treating for 1-2 hr. Its apparatus is composed of casing, circulating pump, supporting frame, plate electrode connecting rods, and positive and negative plate electrodes.

The invention belongs to the field of material chemistry and relates to a lithium sulfur battery functional separator and a preparation method thereof. The functional diaphragm coating material provided by the invention comprises anatase TiO2 and reduced graphene oxide, wherein the reduced graphene oxide is porous, Anatase TiO2 is uniformly distributed on the porous reduced graphene oxide framework, the coating material enables the diaphragm to have the function of lithium ion selective permeability, the anatase TiO2 uniformly distributed on the framework of reduced graphene oxide can promotethe interaction between TiO2 and S, which improves the adsorption of polysulfide on TiO2 surface, and ultimately reduces the solubility of polysulfide, and porous reduced graphene oxide provides migration channels for lithium ions.

The invention discloses amidoxime-based magnetic polyphosphazene nano-microspheres with a core-shell structure and preparation thereof as well as application of the amidoxime-based magnetic polyphosphazene nano-microspheres serving as a uranium adsorbent. Surfaces of magnetic iron nanoparticles are coated with polyphosphazene; then the polyphosphazene is grafted with polyacrylonitrile and the polyacrylonitrile is subjected to hydroximation to obtain the amidoxime-based magnetic polyphosphazene nano-microspheres with the core-shell structure. The surfaces of the microspheres have rich amidoxime-based functional groups so that the microspheres have good dispersity in a water system and have a large adsorption amount and high selectivity on uranium in a water solution system; the microsphereshave magnesium and are easy to separate from water, and have a relatively good application prospect in the aspects of treating radioactive wastewater and extracting the uranium from seawater.

The invention belongs to the field of chemical techniques, and relates to a quaternary ammonium base organopolysiloxane high-molecular compound which contains the quaternary ammonium base organopolysiloxane compound structural units shown in formula (I). The invention provides the quaternary ammonium base organopolysiloxane high-molecular compound which takes linear quaternary ammonium base organopolysiloxane as the main chain and which is embedded with an appropriate quantity of side chain quaternary ammonium bases, so that a finished fabric has excellent properties of hand-feeling fullness, softness, dry smoothness, hydrophilcity and the like.

The invention discloses an organic fertilizer prepared from vinegar residues and a preparation method thereof. The organic fertilizer is prepared from the following raw materials in percentage by weight: 50-60% of vinegar residues, 30-40% of organic wastes and 8-12% of biomass fermenting matters, wherein the organic wastes comprise 15% of soy sauce residues, 13% of saw dust, 12% of mushroom residues, 13% of medicine husks, 12% of straws, 11% of vegetable roots, 12% of vegetable leaves and 12% of livestock manure, and the biomass fermenting matters are mixed bacteria of photosynthetic bacteria, lactic acid bacteria, saccharomycetes, actinomycetes and filamentous bacteria. As the organic fertilizer disclosed by the invention includes abundant nutrients required for the growth of crops, the nutrients can be continuously supplied for the growth of the crops, content of organic matters in soil is increased, composition of humus substances in the soil is updated, enhanced soil fertilization is favorable for activity of microorganisms in the soil and can promote the growth of the crops, and the increased and updated content of the organic matters in the soil can improve adsorption capacity of the soil.

The invention discloses an indoor air purifier based on dielectric barrier discharge and PI nanofilm filtration. The indoor air purifier comprises a box body with an air duct, wherein an inlet and an outlet which are communicated with the air duct are respectively formed in two ends of the box body; a fan is arranged at the inlet; a dielectric barrier discharge device is arranged in the air duct; and a PI nanofilm filtration cover with a purified gas outlet is formed in the outlet of the box body. According to the indoor air purifier based on dielectric barrier discharge and PI nanofilm filtration disclosed by the invention, three technologies such as dielectric barrier discharge, physical filtration and chemical catalysis are combined, a synergistic effect of low temperature plasma and chemical catalysis is utilized, the directional oxidation capacity is improved, and the air purification capacity is improved. Moreover, a foldable PI nanofilm with large filtering area is adopted, so that fine particles in air can be blocked, and the energy consumption is not increased.

The invention discloses a metal cadmium removing method in the water source through hydrated manganese dioxide, which comprises the following steps: putting potassium permanganate and manganese sulfate at 1:1.5-1.54 molar rate in the water with nonattainment cadmium; flocculating; flowing water in the incidence sedimenting pool; filtering the sedimented water through filtering pool. The invention makes Cd2+ density far lower than drinking water standard at 0.005mg / L, which removes cadmium through adsorbing property of hydrated manganese dioxide.

A carbonizing method with variable-pressure control in whole procedure for high carbonizing quality features that above the carbonizing furnace, the high-flow kerosene drip method is used to increase the positive pressure in furnace for generating high-activity high-carbon atmosphere and high furnace pressure, which can speed up the carbonizing on the surface of workpiece, and the furnace pressure can be regulated for controlling the carbonized depth, hardness and metallographic structure of workpiece.

The invention discloses a domestic-wastewater efficient nitrogen-and-phosphorus-removal treatment method. The method includes the following steps that domestic wastewater is oxidized and enters a filtering pond filled with quartz sand and limestone for filtering; the filtered wastewater enters an aeration zeolite biological tank and is subjected to adsorption nitrogen-and-phosphorus-removal treatment through zeolite; the treated wastewater is injected into a flocculation settling pond for flocculation settling treatment; the water obtained after flocculation settling treatment enters a phosphorus-removal settling pond for phosphorus-removal treatment, the treated water is chlorinated, and purified water is obtained. By means of the method, nitrogen and phosphorus in domestic wastewater can be effectively removed, it can be prevented that domestic wastewater is directly discharged and pollutes the environment, secondary pollution can be avoided, and the treatment cost is low.

The invention discloses a preparation method and an application of a carbon nanofiber-bimetal composite catalyst. Specifically, alkaline earth metal salt is mixed in a spinning solution for spinning, proto-filaments are mixed with nitric acid, and transition metal salt is impregnated. Obtained bimetal composite proto-fibers are subjected to peroxidation and carbonization, and the carbon nanofiber-bimetal composite catalyst is prepared. Active components are fixed under the mutual action of alkaline earth metal and transition metal embedded in the fibers at the high temperature during spinning, high dispersion and high-temperature sintering resistance of active components on the carrier surface are guaranteed, and meanwhile, the conversion rate is ensured to be about 95% at 800 DEG C by using the characteristic that alkaline earth metal adsorbs activated CO2 in the CH4 / CO2 reforming process.