124 results about "Pre activation" patented technology

In a process for the in situ blending of polymers comprising contacting ethylene and one or more comonomers in two or more fluidized bed reactors with a catalyst system comprising (i) a magnesium / titanium based precursor containing an electron donor and (ii) a hydrocarbyl aluminum cocatalyst, the improvement comprising (A) increasing or decreasing the melt flow ratio and / or molecular weight of the blend by, respectively, decreasing or increasing the mole ratio of a precursor activator compound to the electron donor or (B) increasing or decreasing the bulk density of the blend by, respectively, increasing or decreasing the mole ratio of a precursor activator compound to the electron donor, both (A) and (B) subject to defined provisos including partial pre-activation of the precursor.

A method and system is disclosed for using common provisioning data to activate cellular wireless devices. A wireless carrier may distribute multiple wireless devices containing a common set of pre-activation provisioning data, such as a common MIN / ESN pair, as well as a unique post-activation data, such as a unique ESN. When such a device is powered on, it may use the common pre-activation provisioning data to gain RF access and then enter into a provisioning data session with a provisioning server. Through the provisioning server, the carrier may tie the device to a service account, and the device may acquire and store further post-activation data, such as a unique MIN. The device may thereafter engage in wireless communication service, using its post-activation ESN and MIN as a basis to gain RF access.

The invention provides a method for preparing super activated charcoal from oily sludge, and the method is applied to recycling of oily solid wastes in petroleum and petrochemical enterprises. The method comprises the following steps: adding a modifying treatment agent into the oily sludge for dewatering and oil collection treatment; then heating the dewatered oily sludge in the absence of air toa certain temperature at a rate of 2-20 DEG C / min for charring; after crushing the charred product to a set size, carrying out pre-oxidation; uniformly mixing the pre-oxidized charred product with compound activator powder at a certain mass ratio, and heating the mixture to a specified temperature in an inert atmosphere at a rate of 2-20 DEG C / min for pre-activation and activation; and soaking the cooled charred product in an acid solution, rinsing with distilled water to be neutral and then drying to obtain an activated charcoal product. By virtue of modifying, charring, oxidation, activation, washing and drying steps, the resulting activated charcoal has the advantages of strong adsorption performance and high specific surface area; and the iodine adsorption value and specific surface area of the obtained activated charcoal are higher than those of ordinary activated charcoal.

The present invention relates to a new colloid palladium activation technology used for non-metal substrate chemical plating to obtain homogeneous metal plating. Said particular technical project in accordance with the present invention is as follows: immerging the substrate pretreated into palladium hydroxide colloid activation liquid, drying the substrate after being taken out, then deoxidizing the palladium hydroxide at the surface of the substrate to deposite a layer of microparticles of metallic state Pd on the surface of the substrate, achieving the goal of activation. The present invention is especially suitable for chemical plating pre-activation of transient metals such as Pd, nickel, silver, cuprum and the like, resulting in more stability of prepared metal membranes at high-temperature and peeling avoidance. The present invention possesses wider practicability and more convenient operations, and is especially suitable for activation of porous non-metal substrate.

The present invention discloses a method and a system for forecasting motion of a device based on context. A described embodiment relates to performing device action automatically. One embodiment can acquire the context value of situational context. According to the embodiment, a determination engine can be used for determining whether action is performed on a computing device based on the context value. In a condition that the determination engine determines to perform the action, the embodiment can be used for performing action on the computing device. According to the embodiment, feedback which is related with the action can be used for upgrading the determination engine. As a specific embodiment, the action can activate the application before a user requests execution of the application. Pre-activation of the application can reduce application delay which is related with waiting for the user request for execution of the application before application activation.

An advanced back-end-of-line (BEOL) metallization structure is disclosed. The structure includes a diffusion barrier or cap layer having a low dielectric constant (low-k), where the cap layer is formed of silicon nitride by a plasma-enhanced chemical vapor deposition (PE CVD) process. The metallization structure also includes an inter-layer dielectric (ILD) formed of a carbon-containing dielectric material having a dielectric constant of less than about 4, and a continuous hardmask layer overlying the ILD which is preferably formed of silicon nitride or silicon carbide. A method for forming the BEOL metallization structure is also disclosed. The method includes a pre-clean or pre-activation step to improve the adhesion of the cap layer to the underlying copper conductors. The pre-clean or pre-activation step comprises exposing the copper surface to a reducing plasma including hydrogen, ammonia, nitrogen and / or noble gases.

The invention belongs to the technical field of waste water processing. An inorganic-organic compound-type adsorbent is prepared by compositing three natural materials of natural clinoptilolite, humic acid and chitosan. The method comprises the following specific steps of: performing pre-activation modification on the natural clinoptilolite, performing insolubility processing on humic acid, sufficiently mixing the processed clinoptilolite, insoluble humic acid and acidic chitosan solution according to a certain proportion, heating and drying through microwave, grinding and screening to prepare the inorganic-organic compound-type adsorbent with a loose porous structure, high surface activity and high ion exchanging performance. The prepared adsorbent is used for processing the industrial waste water with the concentration of Cr(VI) lower than 100mg / L, wherein the concentration of effluent Cr(VI) is lower than 0.5mg / L, which meets the requirement of the maximum permissible discharge concentration of the first type of pollutant in the national waste water comprehensive discharge standard. The method has easily obtained materials, simple processing technique and high processing efficiency, and is suitable for large-scale production.

Electrode catalyst of carbon nitride nanotubes supported by platinum and ruthenium nanoparticles have been produced by a simple, rapid, effective and green process: taking use of the affinity of carbon nitride nanotubes to platinum and ruthenium atoms, Pt and Ru nanoparticles could be directly deposited on carbon nitride nanotubes by the reduction reaction, hereby avoiding the pre-activation or modification process needed by carbon nanotubes. The electrode catalysts produced in this way are suitable for proton exchange membrane fuel cells or direct methanol fuel cells, as well as other chemical reactions catalyzed by Pt and Ru.

The present invention belongs to the field of chemical plating technology, and aims at solving the problems of tin ion interference, activation at acid condition, complicated operation, etc. in activating process of chemical plating. The activating process for chemical plating is to perform pre-activation treatment on the substrate without catalytic activity before the chemical plating for depositing metal. Organic alcohol reductant is utilized to reduce active metal component directly for depositing on the substrate to form catalytic activity center and metal grain growth crystal kernel. Then, the activated substrate is set directly inside the chemical plate liquid for chemical plating. Compared with traditional chemical plating activating process, the process of the present invention is simple, no tin ion interference on the activating process, activating in neutral condition and no damage to the substrate.

The invention relates to a preparation method for coal-based activated carbon for recovery of an organic solvent. The preparation method is characterized in that kneading, forming, carbonization,pre-activation and activation are performed on pulverized coal, coal tar, water and catalyst to obtain columnar activated carbon, wherein the adding amounts of the coal tar, the water and the catalyst are respectively 35-40 percent, 2-4 percent and 2-3 percent of the weight of the pulverized coal, and the catalyst is the hydroxide aqueous solution with the mass concentration of 13-17 percent. According to the invention, the hydroxide catalyst is added into the kneading process to achieve the purposes of splitting functional groups, expanding activated carbon pores, improving the absorption performance and neutralizing inorganic acidic compounds in the pulverized coal; then activation is performed twice to completely remove tar substances and split products accumulated in the pore structure in the carbonization process, some closed pores are opened, and under the action of the catalyst, the functional groups are further decomposed, pores are formed, and pore volume and specific surface area of the activated carbon are improved. According to the activated carbon prepared with the method, the adsorption rate of carbon tetrachloride is not less than 80 percent, the adsorption rate of iodine is not less than 1,050 mg / g, the bulk density is 400-450 g / l, and the mechanical strength is not less than 91 percent.

The invention relates to a sensor, in particular to a high-sensitivity renewable potential sensor for multi-charge ions (polyion-selective electrode). Primary ions (target polyions) of an ion-exchanger-doped polymer film are pre-activated, the electrode is transferred into background electrolyte for activation after pre-activation, and thus the high-sensitivity polyion-selective electrode is obtained. The electrode can be regenerated by the high-concentration primary ions in testing solution during testing or after testing. For high sensitivity, the primary ions to be tested are inhibited in the external surface layer of the film based on the primary ion flow from a sensitive film phase to a film interface. For renewability, the primary ions need not to be completely eliminated from the film. No complex rotary disc electrode device or external current is needed for the sensor, the sensitivity and the renewability of the electrode are significantly improved, and the electrode also has great significance in the direct potential testing of polyions, the titration testing with a polyion electrode as a signal converter, the enzyme testing and the immunoassay.

The invention provides an apparatus and a method for preparing high specific surface area active carbon through an alkali activation process. A mixture sequentially goes through a charging unit, a reaction unit and a cooling and collecting unit to carry out a low temperature pre-activation reaction, a high temperature activation reaction and cooling to obtain an activated product, and the activated product is subsequently processed to obtain the high specific surface area active carbon. Ball maximally reduce the wall sticking problem in a pre-activation or activation device, and also have a very good heat transfer and material conveying enhance effect. The apparatus and the method have the advantages of elimination of the wall sticking phenomenon, realization of continuous production of the high specific surface area active carbon, improvement of the quality and the production efficiency of the high specific surface area active carbon, reduction of the production cost of the high specific surface area active carbon, and reduction of environmental pollution.

The invention relates to a method for preparing unsaturated polyether polyols by utilizing a continuous method and a polymetallic cyanide complex as a ring opening polymerization catalyst of oxyalkylene. The method mainly resolves the problems exiting in prior art that the catalyst is only a bi-metallic catalyst and needs pre-activation, and the process is complicated and the conversion rate of monomer is relatively low. In the invention, the technical proposal which better resolves the problems is as follows: the polymetallic cyanide complex catalyst, an initiator and the oxyalkylene are continuously added in a reactor for preparing the unsaturated polyether polyols, and the polyether polyols obtained are continuously taken out of the reactor. The method is applied to the industrial preparation of polyether polyols by the continuous method.

The invention discloses a method for implementing the batch configuration pre-activation and a device. The method of the invention comprises the processes that: a backup database is updated according to the static snapshot of a system configuration data file so as to result in that the data of the backup database is consistent with the data of a main database; the currently operated database is switched to the backup database and the configuration command in a configuration script when the current operation is executed is resolved; the configuration command after being resolved is executed and the backup database is updated according to the data in the configuration command, and the record for updating the backup database is submitted to the backup database. The invention avoids the successive inconsistency of the status of the configuration data of the network element after being pre-activated and the phenomenon that the configuration data of the network element is inconsistent with the configuration data of the network management system after the network element is pre-activated, and shortens the rollback time of the configuration data under the circumstance of having no effect on the services.

A physical barrier having a carrier device and a sealer material applied to the carrier device. The sealer material is configured to expand when it is activated. In its pre-activation state, the sealer material is flowable. The sealer material is applied directly to the carrier in its pre-activation state through a dispensing orifice without being previously molded.

De-polluting, self-cleaning coating compositions are disclosed which comprise an organic binder having dispersed therein photocatalytic titanium dioxide particles substantially in anatase form which have an average crystallite size between about 1 nm and about 150 nm and which preferably have photocatalytic activity in the presence of visible light. Advantageously, the coatings of the invention do not require pre-activation to achieve high initial photocatalytic activity against pollutants in the air, such as NOx compounds.

A vehicle propulsion system activation device having a plurality of sensors associable with user-manipulable portions of the vehicle, which switch the condition of the controller between conditions of pre-activation and activation. Interlock sensors detect the position of these portions and transmit signals to the controller confirming the sensed positions. Sequence sensors detect the start sequence entered by the user, and transmit the sensed sequence to the controller, which switches conditions of the controller to an activated condition and the state of the propulsion to an activated state upon confirmation of the predetermined sequence.

The invention discloses a target detection method based on deep learning. A VGG16 network used for extracting image features in a Faster RCNN method is replaced with 101 layers of residual errors withhigher expression capability and deeper layers. The structure of the residual unit is changed into a pre-activation mode, so that the network is smoother in forward and reverse propagation processes.The most basic convolution is taken as an improvement entry point. An automatic deformable convolution is introduced. The size and the position of a convolution kernel are dynamically adjusted according to the image content which needs to be identified at present.Based on the characteristics of diversity of target forms, too small inter-class difference, unclear targets, too small targets, inter-target shielding, complex located background and the like, a deep learning algorithm Faster RCNN based on a candidate region is improved. A new target detection method is established. The target detection algorithm is high in robustness, the detection result is not affected no matter whether the target is shielded or illuminated differently or has similar backgrounds or is not clear, and the phenomena of missing detection and false detection are greatly reduced.

The invention discloses special rubber powder for a non-cured rubber asphalt waterproof coating and a preparation method thereof. The special rubber powder is prepared from, by weight parts, 50-65% of tire rubber powder, 20-40% of butyl rubber powder, 0.1-1.5% of activator, 0.1-1.0% of viscosity reducer and 5-15% of separant. The preparation method comprises the following steps: 1) stirring the tire rubber powder and the butyl rubber powder; 2) heating the activator and spraying the activator to the rubber powder obtained in the step 1), and then performing stirring and pre-activation; 3) mixing the pre-activated rough rubber powder obtained in the step 2) with the viscosity reducer and the separant, forming fine rubber powder through grinding, sieving the fine rubber powder, and performing packaging to obtain the finished product. Through the compounding of the waste tire rubber powder and the butyl rubber powder, the performance can meet the creep property, cohesiveness, self-healing property and ageing resistance requirements of the non-cured rubber asphalt waterproof coating. The added amount of plasticizer and polymerization modifiers is reduced effectively, and the cost can be reduced by over 10%.

The invention relates to a novel green synthesis method for preparing o-amidated aryl heterocyclic derivatives from an N1,N3-disubstituted imidazole ionic liquid as a solvent and dioxazolone compoundsas an amide source by transition metal catalyzed C-H coupling reaction. Compared with the traditional technology, the method is safer, simpler, more efficient and more environmentally friendly; a functional group has good tolerance and high yield; the solvent and a catalyst can be recycled, and the cost is greatly reduced; the by-product is merely carbon dioxide, a large amount of waste is avoided, and the atomic utilization rate is increased; pre-activation of a substrate is not needed, the reaction conditions are mild, and the operation difficulty is reduced. An o-amidated aryl heterocyclicderivative molecular library can be obtained efficiently and quickly, natural compounds can be modified later, and accordingly, new drug candidate molecules are synthesized.

The invention provides a method for removing fishy smell of marine fish enzymatic hydrolysis liquid and relates to aquatic product processing technical field. The method comprises the following steps: subjecting thermophilic streptococcus and Lactobacillus bulgaricus to pre-activation, inoculating the thermophilic streptococcus and the Lactobacillus bulgaricus to an enzymatic hydrolysis liquid containing sugar, obtaining enzymatic hydrolysis liquid after cultivation, and subjecting the enzymatic hydrolysis liquid to disinfection processing. According to the invention, composite lactics formedby the thermophilic streptococcus and the Lactobacillus bulgaricus is a fishy removing agent. According to acid generation capability of thermophilic streptococcus metabolism cane sugar and symbioticrelationship of composite bacteria, cane sugar is added to ensure growth and breeding capability of bacteria and taste of the enzymatic hydrolysis liquid after removing fishy smell. Effect of removing fishy smell is represented by a fishy smell value in a sense evaluation method. According to the invention, technology of removing fishy smell is simplified, fishy smell value only is 0.04+ / -0.03, and the enzymatic hydrolysis liquid is clear, has no white flocculate and has a soft taste.

The invention discloses a method for preparing N-aryl amide without a solvent and a catalyst. The method is characterized by obtaining the N-aryl amide under solvent-free and catalyst-free action; a molar ratio of substituted meldrum acid and arylamine is (1 to 5) to (5 to 1). According to the method disclosed by the invention, the defects that acyl chloride, anhydride, a dehydration coupling reagent, the solvent, a phase transfer catalyst or a metal catalyst, and the like are required to be adopted in the prior art are overcome; the method has the following advantages that (1) the substituted meldrum acid is used as an acylating agent, so that pre-activation on carboxylic acid or use of the dehydration coupling reagent is avoided; (2) due to easiness in preparation of the substituted meldrum acid, certain difficult-to-obtain or expensive carboxylic acid and activated derivatives are prevented from being used; (3) a solvent-free mode is adopted, so that the use of a toxic organic solvent or emission of wastewater is avoided; (4) no acid, base or metal catalysts exist, the influence of the acid and the base on sensitive groups and equipment and the residue of metal ions in a product are avoided. A synthesis method disclosed by the invention can play an important role in industrial production for preparing the N-aryl amide and particularly for preparing the N-aryl amide with complex carboxylic acid.

The invention relates to an activated carbon for solvent recovery produced from wood materials and a preparation method thereof. The activated carbon for solvent recovery is characterized by simple production process, wide raw material resource, reduced production cost, superior product performance and strong competitiveness. The method comprises a plurality of processing steps such as raw material mixing, pre-carbonization (slaking), granulation, drying, screening, pre-activation, activation, catalyst recovery, rinsing and drying, etc. With simple production process, the activated carbon of the invention can be obtained by processing well proportioned raw materials. The activated carbon of the invention has wide raw material resources and reduced production cost, so that the price of a final product can be reduced and the market competitiveness can be improved. The characteristics of high adsorption capacity, high intensity, easy desorption, wide application scope and the like in theproduct itself can further improve the product market competitiveness.

The invention discloses a method for detecting amide and triazine herbicide residues in a water body by utilizing graphene, which belongs to the field of analysis on pesticide residues in water bodies. The method comprises the following steps: adsorbing the amide and the triazine herbicide in the water body by using the graphene, filtering, eluting, concentrating and detecting, thereby realizing detection of the amide and the triazine herbicide in the water body. By using the graphene as an adsorbing material, the invention has the advantages of small use amount, strong adsorptive capacity and low preparation cost; the operation is simple, convenient and quick, and avoids reextraction and pre-activation; the use amount of solvent is small, the graphene and extraction columns can be recycled, thus, the invention has the advantages of environmental protection and cost saving; and the invention has high accuracy, and the recovery rate is 80-110%.

The invention relates to a novel green synthesis method of efficiently synthesizing C-C bond and N heterocycle derivatives through a transition metal catalyzed C-H active carbene coupling reaction. The method takes N1,N3-di-substituted imidazole ionic liquid as a solvent and takes a diazonium compound as a carbene donor. Compared with the prior art, the method is safer, simpler, and more convenient, efficient and environmentally friendly; functional group tolerance and a yield are high; the solvent and a catalyst can be recycled; the cost is greatly lowered; a byproduct is only nitrogen; the generation of a large amount of waste is avoided; an atom utilization ratio is increased; pre-activation of a substrate is not required; reaction conditions are mild; the operation difficulty is reduced.

The invention discloses a method for improving the crystallization performance and thermal performance of PET fiber by using modified silicon dioxide. The method comprises the following steps: preparing modified nanometer silicon dioxide; using thionyl chloride to carry out pre-activation on the surface of nanometer silicon dioxide, grafting a flexible polyglycol polymer onto the surface of the chlorine-containing nanometer silicon dioxide, then grafting polyethylene glycol terephthalate (LMPET) with low molecular weight to hydroxy of flexible polyglycol to form modified silicon dioxide nanoparticles; carrying out pelleting blending on the obtained modified silicon dioxide and PET, and thus preparing the PET fiber containing modified silicon dioxide in a certain proportion. The nanometer silicon dioxide is modified, so that the compatibility of nanometer silicon dioxide and PET is improved, and nanometer silicon dioxide is added into the PET for spinning, so that the crystallization performance and thermal performance of the PET fiber are improved. The modified PET fiber is high in thermal stability and good in crystallization performance, and has extremely good application prospects.

The invention discloses a catalyst used for preparing trichlorosilane through silicon tetrachloride cold hydrogenation, and a preparation method thereof. The catalyst is copper-nickel alloy with a nickel mass content of 10-35%. According to the catalyst provided by the embodiment of the invention for preparing trichlorosilane through silicon tetrachloride cold hydrogenation, the catalyst has high excellent high-temperature stability, and is prevented from a bonding phenomenon under high-temperature calcining in the reaction process. Also, high-temperature pre-activation is not needed before the reaction. After the reaction, no oxidation reaction is needed upon the catalyst and the reaction residue. The residue can be directly discharged, and no pollution to the environment is caused.

The invention relates to a method for preparing a high-activity high-efficiency polyethylene catalyst for high-density polyethylene production by a tank slurry method, which is characterized by: dispersing magnesium ethylate serving as a carrier in a C6 to C13 straight-chain paraffin serving as an organic solvent and adding titanium tetrachloride which is a transition metal compound under conditions of a temperature of 50 to 180 DEG C and a stirring speed of 10 to 1,000rpm, wherein the mixing weight ratio of the magnesium ethylate to the titanium tetrachloride of 0.1 to 99.0 percent; after thereaction finishes, performing filtration, washing and pre-activation; and improving the technical index of the activity of the catalyst to 58*10<4>gPE / gTi and 3.1*10<4>gPE / gTi. The method adopts highrotating speed to obtain a big shearing force and reduces the particle size of the prepared catalyst to 1 to 2mum.