46results about How to "Increase microporosity" patented technology

The invention provides a soil ventilation improving synergist containing iron tailings and a preparation method thereof. The soil ventilation improving synergist comprises, by weight, 1 part of tailings, 0.01-0.1 part of crop straws and 0.01-0.1 part of polyvinyl alcohol. After the soil ventilation improving synergist is added into the soil, soil trace elements can be added, soil aggregate is increased, porosity of the soil is increased, soil ventilation is improved, and improvement of activity of microorganisms and enzyme in the soil is promoted. Hydroxyl on a polyvinyl alcohol high molecular chain on the surface of a tailings particle can be attached to soil particles, and soil aggregate and fine pores of the soil are further increased. Crop straw particles processed through decomposing can improve a biochemical property of cohesive soil, provides abundant organic substances for the soil, stimulates the microorganisms in the soil to grow and move, and improves fertilizer retaining and fertility improving capacity of the soil. The soil ventilation improving synergist is low in cost, simple in preparation process, favorable for popularizing. Simultaneously, double effects of chemical modification and physical modification are achieved simultaneously, and the effects are remarkable.

Compositions and methods for preparing mesostructured zeolites having improved hydrothermal stability. Such mesostructured zeolites can be prepared by subjecting a zeolite to rare earth ion exchange prior to and / or subsequent to introducing mesoporosity into the zeolite.

The invention discloses a preparation method of a compound adsorbent mixture, an adsorbent particle and a compound adsorbent for purifying VOCs and belongs to the field of atmospheric VOCs treatment. The method comprises the steps of adding a mixture A and a mixture B to a mixer, adding water to mix and mixing evenly; and adding an additive to the mixer and mixing evenly to prepare the adsorbent mixture, wherein the mixture A comprises activated aluminum oxide, activated carbon and iron ore powder; and the mixture B comprises a pellet sieve residue, a biomass material, magnesium laterite-nickel ore and kaolin. The adsorbent has relatively high porosity and specific surface area; and when the VOCs are in contact with the adsorbent, the adsorbent can be in full contact with the VOCs, and the adsorption efficiency of the adsorbent is improved, thereby achieving high-efficiency and low-cost emission reduction of the VOCs.

The invention discloses a porous hollow spherical lithium ion cell anode material of carbon-coating lithium vanadium phosphate and a preparing method of the anode material. The preparing method of the anode material comprises the steps of taking a binder, a lithium source, a vanadium source and a phosphorous source into water, stirring and dissolving the materials, and conducting spraying drying on the obtained mixed solution to obtain a precursor; mixing the obtained precursor with a carbon source, conducting calcination under a protective atmosphere condition to obtain the anode material, wherein the concentration of the binder in water is 0.3-0.5 wt%, the concentration of the lithium element of the lithium source in water is 0.1-1 mol / L, the concentration of the vanadium element of the vanadium source in water is 0.06-0.6 mol / L, the concentration of the phosphorous element of the phosphorous source in water is 0.09-0.9 mol / L, and the additive amount of the carbon source is 4-20 wt% that of the precursor. The anode material prepared through the method is in a porous hollow spherical shape, and has a high specific area, and the circulation factor performance of the obtained product can be effectively improved.

The invention discloses a composite phase change heat storage material using edible fungus charcoal as a shaping matrix and a preparation method. The designed heat storage material comprises the components of 30-90wt% of a phase change material and 10-70wt% of an edible fungus charcoal matrix material. The preparation method comprises the following steps: treating edible fungi by adopting a low-temperature hydrothermal carbonization method and a KOH high-temperature activation method sequentially to obtain the edible fungus charcoal matrix material, and loading a stearic acid phase change material to obtain the composite phase change heat storage material. The maximum stearic acid loading amount in the heat storage material can reach 77.51%, and the latent heat value is 144.8J / g. The heatstorage material is stable in components, good in composite effect and excellent in heat storage performance, and an operation technology in the preparation process is simple.

The invention relates to a low-porosity high-freezing-resistance gelatinizer which comprises the following components in parts by weight: 42-48 parts of superfine slag powder, 24-30 parts of silicon micropowder, 10-15 parts of expanding agent, 4-10 parts of composite water reducer, 2-5 parts of composite retarder, 2-3 parts of short steel fiber, 1-3 parts of ground calcium carbonate, 2-4 parts of microcrystalline cellulose and 1-3 parts of dioctyl sodium sulfosuccinate. The composite water reducer is composed of a polycarboxylic acid water reducer and an aliphatic water reducer in a weight ratio of (1-4):1; and the composite retarder is composed of sodium gluconate and sodium hexametaphosphate in a weight ratio of (1-4):1. The low-porosity high-freezing-resistance gelatinizer has the advantages of lower porosity, small pore size, ultrahigh strength, high durability and favorable volume stability.

The invention discloses a full-quantitative treatment method for kitchen waste. Materials containing the kitchen garbage are subjected to N times of hydrothermal carbonization reactions under the closed high-pressure condition, a hydrothermal carbonization liquid-phase working medium and hydrothermal carbon are obtained in each hydrothermal carbonization reaction, and part of the hydrothermal carbonization liquid-phase working medium obtained in the (N-1) th time serves as a feeding material of the Nth time of hydrothermal carbonization reaction, carrying out hydrothermal carbonization reaction with a material containing the kitchen garbage to finally obtain a liquid-phase product; the liquid-phase product and hydrothermal carbon obtained by each hydrothermal carbonization reaction are used as raw materials of agricultural fertilizers; wherein N is an integer greater than or equal to 2. The hydrothermal carbonization liquid-phase working medium is recycled, components in the liquid-phase working medium are concentrated, the hydrothermal carbonization reaction process is catalyzed, and the hydrothermal carbon yield and heat value are increased.

The invention relates to a low-porosity high-freezing-resistance gelatinizer which comprises the following components in parts by weight: 42-48 parts of superfine slag powder, 24-30 parts of silicon micropowder, 10-15 parts of expanding agent, 4-10 parts of composite water reducer, 2-5 parts of composite retarder, 2-3 parts of short steel fiber, 1-3 parts of ground calcium carbonate, 2-4 parts of microcrystalline cellulose and 1-3 parts of dioctyl sodium sulfosuccinate. The composite water reducer is composed of a polycarboxylic acid water reducer and an aliphatic water reducer in a weight ratio of (1-4):1; and the composite retarder is composed of sodium gluconate and sodium hexametaphosphate in a weight ratio of (1-4):1. The low-porosity high-freezing-resistance gelatinizer has the advantages of lower porosity, small pore size, ultrahigh strength, high durability and favorable volume stability.

The invention relates to the technical field of sponges, and in particular relates to a graphene biological diatom sponge and a preparation method thereof. The sponge includes the following components: polyether polyol, grafted polyether, an A-1 catalyst, an A-33 catalyst, silicone oil, graphene, diatomite, stannum butylidene octoate and toluene diisocyanate. The graphene biological diatom spongeprovided by the invention adds the natural diatomite and the graphene to the components on the basis of an ordinary sponge, so that the naturalness and microporosity of the sponge are improved; and the sponge provided by the invention can release negative ions and far infrared rays, can adsorb and decompose bacteria and harmful gases entering the sponge body, can be further applied to air purification and water treatment, and has very high practical value.

The invention relates to a method for preparing activated carbon. The method comprises the following steps of: weighing one of soluble phenolic resin, furfuryl alcohol resin, polyacrylonitrile and soluble starch, a carbon precursor polymer and one pore-forming agent of polyethylene glycol, polyvinyl alcohol and polyvinyl butyral, mixing, and adding one of methanol, ethanol and deionized water as a solvent for dissolution; and weighing the activated carbon raw material, adding into the solution for dipping, then drying, and carbonizing in a microwave high-temperature sintering furnace at the temperature of 500-1100 DEG C in a nitrogen atmosphere for 0.5-24h. According to the method for preparing activated carbon, provided by the invention, an activated carbon product prepared by the method has abrasion resistance and micropore porosity which are equivalent to those of the raw material activated carbon; and furthermore, the mesopore porosity is further increased in comparison with the raw material activated carbon, and the activated carbon has the advantages of double aperture distribution, large specific surface area and high abrasion resistance, and can meet the application requirements under specific conditions.

The invention relates to a wound filling dressing for the closed negative pressure drainage of a surgical wound as well as a preparation method. The wound filling dressing mainly comprises a vegetable sponge matrix, micropore fabrics, a semi-transparent film and a negative pressure drainage duct, wherein the vegetable sponge matrix is matched with the wound in the shape, the micropore fabrics arerespectively arranged on the upper surface and the lower surface of the vegetable sponge matrix or wrapped on the surface of the vegetable sponge matrix, the semi-transparent film covers the upper surface of the vegetable sponge matrix to take the closing and fixing action, and the negative pressure drainage duct is inserted in the vegetable sponge matrix. The invention has low cost, simple structure, convenience of manufacture and low raw material and manufacture costs being only about one percent of a similar product, and can greatly decrease the medical cost and accordingly be favorable tothe popularization of a closed negative pressure suction technology.

The invention provides a soil ventilation improving synergist containing iron tailings and a preparation method thereof. The soil ventilation improving synergist comprises, by weight, 1 part of tailings, 0.01-0.1 part of crop straws and 0.01-0.1 part of polyvinyl alcohol. After the soil ventilation improving synergist is added into the soil, soil trace elements can be added, soil aggregate is increased, porosity of the soil is increased, soil ventilation is improved, and improvement of activity of microorganisms and enzyme in the soil is promoted. Hydroxyl on a polyvinyl alcohol high molecular chain on the surface of a tailings particle can be attached to soil particles, and soil aggregate and fine pores of the soil are further increased. Crop straw particles processed through decomposing can improve a biochemical property of cohesive soil, provides abundant organic substances for the soil, stimulates the microorganisms in the soil to grow and move, and improves fertilizer retaining and fertility improving capacity of the soil. The soil ventilation improving synergist is low in cost, simple in preparation process, favorable for popularizing. Simultaneously, double effects of chemical modification and physical modification are achieved simultaneously, and the effects are remarkable.

The invention discloses a preparation method of mesoporous ceramic. The mesoporous ceramic is prepared by taking a traditional pore-forming agent clad with an organic metal framework compound as a novel ceramic pore-forming agent, wherein the organic metal framework compound is a coordination polymer, has a three-dimension porous structure and is a high-stability mesoporous material taking metal ions as connection points; meanwhile, the surface of the traditional pore-forming agent is subjected to polydopamine membrane cladding treatment to improve the complexation of the metal ions on the surface of the traditional pore-forming agent, thereby realizing the high-efficient cladding of the organic metal framework compound. The novel pore-forming agent has good pore-forming capability equal to that of the traditional pore-forming agent, and also endows traditional ceramic pores with multidimensional mesoporous structures, the micropore performance of ceramic is obviously improved, and a prepared ceramic product is higher in porosity and more uniform; in addition, the metal ions can be converted into metal or metal compounds in a sintering process, so as to further improve the comprehensive performance of a ceramic body.