14results about How to "High surface area" patented technology

The invention relates to the field of sealing strips, and discloses a low-VOC (volatile organic compound) automobile sealing strip composite PVC (polyvinyl chloride) material and a preparation method thereof, the material comprises PVC resin, ethylene propylene diene monomer, a modified mesoporous ZIF-8 nano material, composite filler and the like; the modified mesoporous ZIF-8 nano material is prepared by grafting a hydroxylated antioxidant component on the surface of the mesoporous ZIF-8 nano material by using isophorone diisocyanate, and the hydroxylated antioxidant component is prepared by reacting N-(4-anilinophenyl) maleimide with 2-mercaptoethanol; the composite filler is prepared by grafting modified nano silicon dioxide and aminated basalt fiber, the modified nano silicon dioxide is prepared from phenylphosphoryl dichloride, diethanol amine, dibutyl phosphate and isophorone diisocyanate as raw materials, and the aminated basalt fiber is prepared by modifying with an aminated silane coupling agent; the modified mesoporous ZIF-8 nano material and the composite filler are added, so that the flame retardant property, the thermal aging resistance and the mechanical property of the material are improved.

The invention relates to a quick-dry cooling textile integrating flame retardance, antibiosis, radiation cooling and evaporative cooling as well as preparation and application of the quick-dry cooling textile, and belongs to the technical field of functional finishing of textiles. The preparation process is simple, the cost is low, and the prepared textile has good flame retardance, antibiosis, one-way moisture conduction and cooling performance and can be applied to the fields of personal heat management, fire protection, building cooling, antibiosis and the like.

The invention relates to the technical field of preparation of composite nanowires, in particular to a nickel sulfide titanium dioxide composite nanowire as well as a preparation method and application thereof. The preparation method comprises the following steps: taking a nickel-containing titanium-based nanowire obtained by carrying out ion exchange on a nickel element Na2Ti3O7 nanowire as a raw material; the nickel-containing titanium-based nanowire is mixed with sublimed sulfur, and then the nickel sulfide / titanium dioxide composite nanowire is prepared through a two-step heating process. The nickel sulfide / titanium dioxide composite nanowire obtained through the technical scheme is regular in morphology, and nickel sulfide and titanium dioxide are evenly distributed; adsorption of the lithium-sulfur battery positive electrode carrier to a discharge intermediate product can be effectively enhanced, conversion of the discharge intermediate product is accelerated, the electrochemical performance of the lithium-sulfur battery is improved, and meanwhile, the process for preparing the polar transition metal compound material with the high specific surface area and the high activity is simple, and production is easy.

The invention provides a vanadium phosphorus oxide catalyst. The vanadium phosphorus oxide catalyst comprises the following components in percentage by weight: 66-94% of vanadyl pyrophosphate, 0.5-6% of vanadyl phosphate, 0.8-25% of attapulgite and 1-6% of graphite. The preparation method comprises the following steps: mixing an organic solvent, vanadium pentoxide and phosphoric acid for reaction to obtain a blue pasty reaction solution containing a vanadium phosphorus oxide catalyst precursor, adding an attapulgite carrier into the blue pasty reaction solution, filtering, drying, forming, roasting, activating and the like to obtain the catalyst. The catalyst disclosed by the invention is applied to a reaction for preparing maleic anhydride by oxidizing n-butane, the reaction is carried out in a reaction temperature interval of 380-420 DEG C, and the conversion rate of the n-butane and the yield of the maleic anhydride are higher than those of the catalyst without the attapulgite.

The application discloses a preparation method of a polymyxin B sulfate dry powder and belongs to the technical field of medicine preparation. The preparation of the polymyxin B sulfate dry powder is that the polymyxin B sulfate fermentation liquor is subjected to adsorption filtration by using a ZIF-8@polyurea / polyether sulfone composite membrane, and the filter cake is subjected to elution by using a sulfuric acid aqueous solution. The eluate is post-treated to obtain the polymyxin B sulfate dry powder. The application has the advantages of mild preparation condition, simple process, low reaction energy consumption and industrial application prospect.

The present invention relates to air pollution prevention and control materials in energy-saving and environmental protection industries; solid waste pollution disposal, resource recycling and other fields, and in particular to a denitration catalyst, and a preparation method thereof, and its application in the field of high-temperature denitration. The preparation method of the denitration catalyst of the present invention comprises: step A, stirring zeolite with silica sol, filtering and drying, calcining and ball milling to obtain powder one; step B, mixing powder one with alumina and synthetic molecular sieve in proportion and grinding to obtain powder two; step C, adding powder two to a solution of copper salt and cerium salt, stirring, filtering and washing, and obtaining slurry; step D, drying the slurry, and separating to obtain a denitration catalyst. The main body of the denitration catalyst of the present invention is zeolite modified by silica sol and activated alumina, and the synthesis process is simple, easy to industrialize, and the production cost is low.

In order to overcome the problems in existing lithium ion batteries having high compactness and high-specific-surface-area negative electrodes of serious side reactions of electrolytes and high gas production, the present invention provides a lithium ion battery, comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode comprises a negative electrode material layer, the compaction density of the negative electrode material layer is greater than or equal to 1.4 g / cm3, and the negative electrode material layer comprises a negative electrode active material, and the non-aqueous electrolyte comprises a solvent, an electrolyte salt, a vinylene carbonate, a fluoroethylene carbonate, and an unsaturated phosphate represented by structural formula 1, and the electrolyte salt comprises LiPF6 and LiFSI. The lithium ion battery provided by the present invention has good cycle performance, high and low temperature storage performance, and lithium precipitation resistance.

The present invention discloses a hydrogen peroxide high-efficiency water treatment agent and a preparation process thereof, and belongs to the technical field of water treatment agents. The present invention is used to solve the problem that when hydrogen peroxide is used as a water treatment agent to treat chemical industrial wastewater in the prior art, heavy metal impurities therein cannot be efficiently adsorbed; when inorganic adsorption materials modified by hydrogen peroxide are used as water treatment agents, various organic wastes in industrial wastewater cannot be efficiently adsorbed. The hydrogen peroxide high-efficiency water treatment agent prepared by the present invention comprises composite microspheres and modified copolymers; the composite microspheres are obtained by emulsifying and cross-linking silica gel and activated carbon powder modified by hydrogen peroxide; the modified copolymer is obtained by copolymerizing methyl fumarate, maleic anhydride, a lignin mixed solution after hydrothermal treatment, and an esterification product. The water treatment agent prepared by the present invention can remove heavy metal ions and organic pollutants in industrial wastewater, and has the advantages of high adsorption efficiency and green environmental protection.

The invention provides a nitrogen-doped carbon catalyst as well as a preparation method and application thereof. The nitrogen-containing polymer precursor is used as a main raw material, the alkali metal ion salt precursor containing one or more alkali metal elements is combined, and more defects and special active sites can be generated by utilizing the induction effect of alkali metal ions in the calcination process, so that the oxidation reduction (ORR) performance is improved, and the preparation method has the advantages that the preparation process is simple, the cost is low, and the application prospect is wide. And finally, the nitrogen-doped carbon catalyst with high specific surface area, high activity and high stability is prepared. The invention also provides an application in an energy storage device.

The invention discloses a reaction device for carbon black with low screen residues. The reaction device comprises a reaction furnace, a first throat pipe, a backflow tail gas and hot flue gas heat exchange section and a raw oil and flue gas heat exchange section which are connected in sequence, wherein an inlet pipe is arranged at the front end of the reaction furnace; an oil gun connector coaxial with the inlet pipe is arranged in the center of the inlet pipe, a plasma torch connector deviating from the axis of the inlet pipe is annularly arranged on the outer wall of the inlet pipe, and an inclination angle larger than 0 degree and smaller than 90 degrees is formed between the plasma torch connector and the axis of the inlet pipe. A plurality of plasma torches are eccentrically arranged at the top of the reaction furnace according to a certain inclination angle to form a high-temperature tangential rotational flow field; carbon black raw oil is atomized through a plurality of gas atomization oil guns arranged in the axial direction and sprayed into a plasma high-temperature tangential rotational flow field, and oil gas and a high-temperature plasma carrier are subjected to a cracking reaction to generate carbon black flue gas; meanwhile, reaction hot tail gas is introduced into the upper part of the reaction furnace along the wall surface, and carbon black flue gas is restrained in the center of the reaction furnace by the hot tail gas, so that oil gas without carbon black is prevented from forming hard carbon on the wall surface of the reaction furnace.

The application provides a kind of revivification method of hydrocracking waste catalyst, with hydrocracking waste catalyst as raw material, on the basis of not destroying catalyst forming structure, according to saturated water absorption, different proportion of inorganic acid-organic acid-organic ligand mixed solution is prepared and treated by solvent induced coordination method, the polychaete organic ligand and organic acid in mixed solution are coordinated with dissolved active metal to generate metal-organic complex, re-impregnation process is carried out in micro excess solution, without filtration and avoiding the phenomenon of metal loss caused in drying process, without re-shaping treatment and additional carrier and metal, realizing the recycling of hydrocracking waste catalyst, and effectively improving the hydrocracking reaction performance of catalyst. The application improves resource utilization, simplifies process treatment process, greatly reduces energy consumption, effectively saves cost, realizes the sustainable utilization of waste resources.

The invention discloses a three-layer composite material for a gear pump and a preparation method of the three-layer composite material, the composite material comprises a metal base layer, a copper powder layer sintered on one side of the metal base layer and a plastic layer embedded in and covering the copper powder layer, and the plastic layer is prepared from calcium fluoride, ETFE, nanometer aluminum oxide, graphite, iron oxide red and PTFE emulsion. ETFE is a tetrafluoroethylene-ethylene alternating copolymer, the ETFE and a PTFE plastic matrix have certain blending compatibility, and better binding force can be formed in a sintering state; the calcium fluoride material has the characteristics of low-temperature brittleness and high-temperature plasticity, under the high-speed and high-load condition and under the influence of friction heat, the high-plasticity calcium fluoride is easily combined with PTFE, the transfer and consumption process can be smoother, and therefore the product performance is improved; through cooperative use of all the components, the obtained plastic layer is high in bonding strength, and the running time under a continuous pressure durability test is remarkably prolonged.

The invention relates to a lignin-based sulfur-oxygen-doped porous carbon adsorbent as well as a preparation method and application thereof. According to the method, lignin is used as a carbon source, potassium thiosulfate is used as a sulfur-oxygen doping agent and an activating agent, a novel lignin activation technology is provided, lignin and K2S2O3 are subjected to ball milling and mixing according to a specific mass ratio, and then the mixture is calcined into carbon in a tubular furnace under nitrogen gas flow; the preparation method solves the problem of mixed activation side reaction of an activator and a heteroatom dopant in traditional chemical activation, realizes one-step activation and doping preparation of porous carbon, is simple in preparation process and low in equipment requirement, can effectively reduce the production and preparation cost, and is suitable for industrial large-scale production. The specific surface area of the prepared lignin porous carbon adsorbent can reach 3301 m < 2 > / g, the total pore volume can reach 2.33 cm < 3 > / g, and the pore volume of mesopores accounts for 80%. In performance application, the adsorption capacity to methylene blue reaches 1122mg / g, and meanwhile, the composite material has the specific capacitance of 250F / g under 1M KOH.

The invention relates to the technical field of maleic anhydride production, in particular to a multi-stage bed high-load low-resistance catalyst for maleic anhydride produced by a butane process and a preparation method of the catalyst. The method comprises the following steps: step 1, (1) sequentially adding vanadium pentoxide and co-catalytic metal salt into a mixed solvent of isobutanol and benzyl alcohol; controlling the temperature to be 100-130 DEG C, and dropwise adding phosphoric acid within 1-2 hours at a constant speed; continuously carrying out reflux reaction for 10-20 hours; cooling and filtering; filtering to obtain a filter cake; (2) sequentially drying and roasting the filter cake to obtain an active precursor; 2, (1) granulating the active precursor, adding graphite, uniformly mixing, and carrying out compression molding to obtain a catalyst A semi-finished product; (2) activating the catalyst A semi-finished product in an oxygen-containing atmosphere to obtain a catalyst A; and 3, diluting and compounding the catalyst A and an inert magnetic ring to obtain the butane-process maleic anhydride catalyst.