538results about How to "Large pore volume" patented technology

The invention discloses a catalyst, which is carried by an AlSn-SBA-15 molecular sieve with SnAl double metal-containing framework, for dehydrogenation of propane for preparing propylene. In the catalyst, the AlSn-SBA-15 molecular sieve with SnAl double metal-containing framework is used as a carrier, platinum-group element metal is used as a main catalyst, IVA-group, IA-group or IIA-group element metal is used as an auxiliary agent, and high-temperature-resistant inorganic oxide is used for forming an adhesive. A multi-step dipping method is used in the preparation of the catalyst, namely the alkaline metal auxiliary agent is dipped, so that the acidity and alkalinity of the catalyst and the types of cations in pores of the molecular sieve are effectively modulated by cation exchange technology, and the platinum-group element metal is dipped. The catalyst has superior anti-carbon deposit performance, high propane conversion rate under the reaction conditions of high temperature and low pressure, propylene selectivity and reaction stability.

The invention discloses a water-based ultra-thin fire-retardant coating for steel structures. The fire-retardant coating comprises components as follows: a binder emulsion, an intumescent flame retardant system, filler, deionized water and additives, wherein the additives comprise a dispersing agent, an antifoaming agent, a mold inhibitor, an anti-flash-rust agent, a coalescing agent, a leveling agent and a thickener; the intumescent flame retardant system comprises a dehydration catalyst, a carbonizing agent and a foaming agent. The invention further designs a preparation method of the water-based ultra-thin fire-retardant coating for the steel structures. The components are mixed sequentially to be prepared into the water-based ultra-thin fire-retardant coating for the steel structures in a vertical sand mill and a dispersing tank. The prepared coating is large in adhesive force, high in hardness, good in fireproof property, good in anti-scratch performance and excellent in weather resistance and water resistance, the surface layer of the coating is fine and smooth, the decoration performance is improved significantly, and the preparation method is low in energy consumption and has the advantages that the harm to human bodies and the pollution to the environment during preparation are small and the like.

The present invention provides a super-stable Y zeolite and the preparation method thereof. The ratio of silicate to aluminum in the super-stable Y zeolite is 6-11. The lattice constant of the zeolite is 2.446 to 2.458 nanometers. The percentage of non-skeleton aluminum in total aluminum in the zeolite is not higher than 30% by weight. The diameter of secondary pores with diameter of 2 to 100 nanometers in the zeolite shows a double probable distribution. The most probable diameter of the secondary pores with comparatively large diameter is 6-15 nanometers. The proportion of secondary pores with diameter between 8 to 100 nanometers in total secondary pores is 35% to 60%. The preparation method of the zeolite includes the step of making the super-stable Y zeolite come into contact with a solution containing organic acids and inorganic acids in the atmosphere of inert gases and/or nitrogen. The modified super-stable Y zeolite provided in the invention is applied to catalytic cracking; therefore the following effects can be realized: the cracking ability of heavy oil is strong, the selectivity of gasoline is high, and the selectivity of dry gas and carbon coke is good.

The invention relates to a method of preparing a nitrogen-doped porous carbon material, and belongs to the field of inorganic nanometer materials and electrochemistry. The inventive method comprises the steps of: preparing mesoporous carbon nitrogen compound with mesoporous silicon oxide powder and ethylene diamine as precursors, and activating with an activator potassium hydroxide at high temperature while controlling the mass ratio of the potassium hydroxide and the mesoporous carbon nitrogen material to obtain a nitrogenous material with high specific surface area and pore volume. The specific electric double layer capacitance of the inventive nitrogen-doped porous carbon material in alkaline aqueous electrolyte under potential scanning speed of 2mV/s is 328F/g and 318F/g, respectively, which are much higher than that of the reported porous carbon materials. The inventive nitrogen-doped porous carbon material has good application prospect as a high-power super capacitor active material.

The invention belongs to the technical field of functional material and particularly relates to a magnetic mesoporous titanium dioxide core-shell type compound microsphere as well as a preparation method and applications thereof. The core-shell type compound microsphere takes a ferroferric oxide nano particle cluster as the core and takes mesoporous titanium dioxide with high crystallinity as the shell. The preparation method comprises the following steps: firstly, preparing the ferroferric oxide nano particle cluster with stable citric acid, secondly, wrapping the surface of the cluster with an amorphous titanium dioxide shell through a sol-gel method, and finally, obtaining the magnetic mesoporous titanium dioxide core-shell type compound microsphere through hydro-thermal treatment. By being provided with the mesoporous titanium dioxide shell with high crystallinity, the compound microsphere has the characteristics of high selectivity, high enrichment capacity, high sensitivity and high recovery rate to phosphoeptide; and since a magnetic core exists, the microsphere enriched in phosphoeptide can be separated by magnetism quickly and very conveniently. The method provided by the invention has the advantages that the operation is simple, the process is controllable, and the prepared compound microsphere can be used for analyzing and identifying phosphoeptide with ultra low concentration in a biological sample.

An individually dispersed mesoporous nano-SiO2 is prepared through preparing reaction sol by using cationic surfactant as template agent and triblock non-ionic surfactant as template agent aid and disperser, and synthesizing the product. Its advantages are high dispersity, ordered mesoporous arteries, and large specific surface area and pore volume.

This composite oxide powder can secure a large pore volume even after calcination at high temperature and, when a catalyst is formed by loading a noble metal on this composite oxide powder, noble metal grain growth can be suppressed. The composite oxide powder comprises particles of an oxide of a metal M₁ and an oxide of a metal M₂ which does not dissolve in the oxide of the metal M₁, the oxide of the metal M₁ and the oxide of the metal M₂ being dispersed at the nanometer level. Since different oxides serve as a barrier to each other, sintering is suppressed. Therefore, in the case of composite oxide powder comprising Ce as a metal M₁ and Al as a metal M₂, grain growth is small even after exposed to high temperature and pores of 3.5-100 nm secure a volume of 0.07 cc/g or more after calcination at 600° C. for 5 hours and a volume of 0.04 cc/g or more after calcination at 800° C. for 5 hours.

The invention discloses a microspherical ethylene oxychlorination catalyst preparation method, which comprises the following six steps: solution preparation; precipitation and reaction; peptization; active component and assistant component homogenization; spray forming; and post-treatment. Solution of an active component and solution of an assistant component are dissolved in peptized pulp; a proper amount of dispersant and pore-expanding agent are added into the pulped sol solution to ensure the active component and the assistant component are uniformly distributed in the sol solution; the dispersant can prevent active and assistant component deposition caused by the prolongation of spray time; and the added proper amount of pore expanding agent can expand formed pore passage with a microspherical structure in a spraying process of the sol solution so as to improve the volume of the pore passage of a catalyst carrier and improve the pore volume and specific area of the catalyst.

The invention discloses a preparation method of porous geological polymer microspheres. The porous geological polymer microspheres are prepared by a dispersion suspension solidification method. Compared with the prior art, low-temperature curing and one-shot molding granulation are realized without requirements of high-temperature calcination and curing and addition of other auxiliaries; and at the same time, large-scale use of solid wastes is realized, and raw materials are widely available, cost is low, process is simple, and the whole process is non-toxic and pollution-free; in addition, the preparation efficiency is high with a ball-forming degree exceeding 90%; the size of the particles can be adjusted, and the pore size distribution is uniform; the pore volume is large, and can be regulated, and a specific surface area of the microspheres reaches 110m2/g, thus, the porous geological polymer microspheres can be directly used for packed columns for column separation. Experiments show that the porous geological polymer microspheres have a good adsorption effect on heavy metals, and can be used as adsorbents for heavy metals, and have a broad application prospect in the aspect ofremoving heavy metals and radioactive elements in water.

The invention discloses a method for synthesizing a porous microsphere material containing NaY zeolite by a waste FCC (fluid catalytic cracking) catalyst, which is a catalytic cracking process. The method is characterized by comprising the following steps: A. adding water and hydrochloric acid to the waste FCC catalyst for mixing slurry and acidizing to obtain catalyst microspheres; B. mixing thecatalyst microspheres with one or a combination of natural kaolin and roasted kaolin, adding water to obtain slurry containing 30-50% of solid, adding a functional agent to the slurry and then forming dried microspheres through spray drying, and roasting the dried microspheres at the temperature of 700-1100 DEG C for 0.5-10 hours to obtain roasted microspheres; and C. adding sodium silicate, a zeolite directing agent and alkali liquor to the catalyst microspheres and/or the roasted microspheres, adding the obtained mixed solution to a crystallization reaction kettle, performing hydrothermal crystallization at the temperature of 85-120 DEG C for 10-30 hours, filtering out a mother liquid, washing the obtained filter cake with deionized water, and then drying to finally obtain the finished product. The method is mainly used for synthesizing the porous microsphere material containing the NaY zeolite.

A SAPO-34 molecular sieve of a larger specific surface area and a hollow alumina-rich hierarchical pore structures and application thereof in a reaction that uses methanol to prepare low carbon olefin, belongs to the technical field of molecular sieves. The product by the invention is obtained by taking triethylamine as a template agent, adopting a traditional hydrothermal or solvothermal synthetic method, taking water or alcohol as a solvent, and introducing polyethylene glycol polymer in a high pressure reactor under an autogenous pressure through an in-situ alumina-rich method. A synthetic SAPO-34 molecular sieve sample is in a hollow and hierarchical pore structures cubic shape, the average crystal size is 5-10 [mu]m, and the mesoporou size is 2-15 nm. According to the invention, the yield of the synthetic SAPO-34 molecular sieve sample is extremely high, and can reach over 90%. The invention has extremely high selectivity of low carbon olefin in a reaction that uses methanol to prepare olefin (MTO), particularly the total yield of ethylene and propylene can reach over 85%, and the SAPO-34 molecular sieve is extremely suitable for industrial amplification application.

This is a kind of middle porous silicon aluminum material. Its 27Al MAS NMR spectrogram basically has no apex at the chemical displacement 0ppm position, but has the only apex at the 51.7 mm position; the aluminum content in the silicon aluminum material counted with the weight of Al2O3 is 1.0 - 30%; its specific surface area is 100 - 350 m2/g; its hole content is 0.4 - 0.8 mL/g; its average aperture is 14 - 30 nm; and its most probable aperture is 10 - 30 nm. The material is made as follows: neutralize silicon source and acid solution into colloid when mixed, add aluminum source after laid to aging, after equably mixed, aging, dry, ammonium exchange, again dry. The center holes of the material distributes concentratively and their apertures are rather big; it has bigger specific surface area and hole volume; the Al atoms in the material almost all exist as four coordination style, after ammonium exchange, it can be used as the carrier of cracking catalyst or directly used as catalyst.

The invention discloses a method for preparing a mesoporous catalytic composite material. The method is characterized by taking diatomaceous earth and kaolin as raw materials and comprising the following steps of: A, adding water and a dispersing agent into the diatomaceous earth and kaolin, uniformly stirring to obtain a slurry, adjusting a slurry destination pH value to 4.0-12.0 by using acid or alkali, spraying and drying to form a microsphere, and calcining the microsphere to obtain a mixed clay calcined microsphere; B, adding water and an adhesive into the kaolin and a zeolite molecular sieve, uniformly stirring to form a slurry, spraying and drying to form a microsphere, and calcining the microsphere to obtain a calcined microsphere; and C, adding sodium silicate, alkali liquor and a zeolite guide agent into the mixed clay calcined microsphere obtained in the step A and/or the calcined microsphere obtained in the step B, then putting into a crystallized reaction kettle for hydrothermal crystallization, filtering to remove mother liquor, washing the filter material by using deionized water, filtering again to obtain the washed filter material, and drying the filter material to obtain the mesoporous catalytic composite material containing a NaY zeolite molecular sieve. The method disclosed by the invention is mainly used for preparing the mesoporous catalytic composite material containing the NaY zeolite molecular sieve.

The invention provides a thallium-containing wastewater strongly oxidizing, coagulating, adsorbing and recovering process. The process includes the following procedures: thallium-containing wastewater concentration, pH regulation, strong oxidization, coagulation, flocculation, precipitated sludge treatment, pH regulation, solid impurity filtration, removal of Zn, Pb, Cd and Tl, and the like. The process has the beneficial effects that the process has the advantages of advanced technology, maturity, good effluent quality, stability in operation, conciseness in process, strong practicability, easiness in start and stop, convenience in maintenance and management, small investment, low operating cost, small floor area for construction, short construction period and large application ranges of projects; treatment of heavy metal ion polluted sewage is not limited by temperatures; the limitation that a biological method can not be used in cold regions in the north can be overcome.

The present invention provides four loofah vegetable sponge antibacterial health care materials and the application thereof. The four loofah vegetable sponge antibacterial health care materials are mainly characterized in that the four materials all contain the loofah fiber component and have the approximately same efficacy of antibacterial health care; wherein, material A contains loofah vegetable sponge fiber tablet or loofah vegetable sponge fiber powder, loofah vegetable sponge fiber active carbon or loofah begetable sponge fiber compound active carbon and bamboo pyroligneous antibacterial liquor; material B contains loofah vegetable sponge fiber tablet or loofah vegetable sponge fiber powder and loofah vegetable sponge fiber active carbon or loofah vegetable sponge fiber compound active carbon; material C contains loofah vegetable sponge fiber tablet or loofah vegetable sponge fiber powder and bamboo pyroligneous antibacterial liquor; material D contains loofah vegetable sponge fiber active carbon or loofah vegetable sponge fiber compound active carbon and bamboo pyroligneous antibacterial liquor. The materials of the present invention are taken as the additive in preparing antibacterial health care fiber and textile, washing product, craftwork, vessel, present box and packaging box, sports article, furniture and paint or building decoration material or are used for purifying water and air and absorbing harmful substances.

The invention relates to a FCC agent of solid anti-heavy metal and relative preparation, wherein it is characterized in that: the agent comprises Na2O at 0.3-0.8%, Al2O3 at 35-50%, MgO at 1-10% and RE2O3 at 1-10%; said agent has high specific surface and porous volume, stable structure and flexible application; the inventive preparation comprises: using caoline as raw material; when pulping caoline, adding additive and magnesia or its precursor, to be sprayed into micro balls; the micro ball is mainly at 40-80micrometer; the micro ball is baked at 900-1100Deg. C; the baked micro ball via alkali solution is extracted and washed to deposit sodium; processing it with rare earth precursor, to obtain the FCC agent. The invention can improve the reaction activity of FCC base agent.

The invention provides a method for preparing a porous adsorption material by using microwave low-temperature pore-forming activated granular red mud. The method comprises the following steps: taking a bonding agent which is 2-10 percent of mass of the red mud, uniformly mixing red mud wastes and the bonding agent, kneading into grains by using a granulator or by a hand and activating the red mud grains for 5-30 minutes at an activation temperature of 80-500 DEG C by utilizing microwaves to obtain the porous adsorption material. The red mud is activated by utilizing the selective heating and resonant sintering effects of the microwaves on iron and other matters in the red mud. The porous adsorption material prepared by the method has a pore volume of more than 0.0826 ml/g and a specific surface area of 18.62-24.25 m2/g, and the grain size can be different as required. The produced porous adsorption material has the characteristics of fine grain, high porosity, large surface area, strong hydroscopicity, good temperature-resistant stability and low cost and has the great advantage in aspect of wastewater adsorption and treatment.

The invention relates to a multi-metal phosphide nanotube catalyst with evenly distributed catalytic centers and a low-temperature preparation method. The multi-metal phosphide catalyst composite material provided with a hollow nanotube structure, using carbon as the support and provided with the evenly distributed catalytic centers. The method uses a multi-metal metal organic framework material as the template and uses simple low-temperature phosphating reaction (200-350 DEG C) to obtain the multi-metal phosphide catalyst with the nanotube structure. The prepared multi-metal phosphide nanotube catalyst well keeps the morphology of precursors, has large specific surface area and pore volume, has hierarchical pore distribution, has an even and controllable metal doping proportion and phase, is beneficial to electrochemical catalyzing, hydrodesulfurization, selective hydrogenation and other hydrogenation reaction and is promising in application prospect.

The invention relates to the field of catalysts, and discloses a propane dehydrogenation catalyst and a preparation method thereof and a method for preparing propylene through propane dehydrogenation.The propane dehydrogenation catalyst is prepared from a carrier, a main active components Pt, a metal additive Sn and a metal additive Na that are loaded on the carrier, wherein the carrier is a spherical three-mesoporous diatomite composite carrier, the spherical three-mesoporous diatomite composite carrier is prepared from diatomite, a mesoporous molecular sieve material with a three-dimensional cubic channel distribution structure, and a mesoporous molecular sieve material with a two-dimensional hexagonal channel distribution structure, the average particle size of the spherical three-mesoporous diatomite composite carrier is 30-60 mum, the specific surface area thereof is 150-600m<2>/g, the pore volume thereof is 0.5-1.8mL/g, pore size is in trimodal distribution, and optimum apertures corresponding to three peaks are separately 1-2nm, 2.5-5nm and 10-40nm. The propane dehydrogenation catalyst has high catalysis performance when being used in preparation of propylene through propane dehydrogenation, propane conversion rate is high, propylene selectivity is high, and the catalyst has high stability.

A gas antichlor comprises 50 to 88 mass percent of alkaline earth oxides, 10 to 40 mass percent of alumina and 2 to 30 mass percent of bentonite. The antichlor can effectively remove the hydrogen chloride in the gas at high temperature, is especially suitable for the dechlorination of a constant reforming and regenerative gas with high water content, is not easy to slime or cake in the process of dechlorination, and has higher crushing strength.

The invention provides a novel hydrocracking catalyst special for coal tar and a preparation method and an application method thereof aiming at the problems of the conventional coal tar hydrocracking catalyst. The hydrocracking catalyst consists of active ingredients, an aid and a carrier, wherein the active ingredients of the hydrocracking catalyst consist of WO3 and NiO, the aid is ReO, and the carrier consists of activated alumina, zeolite and BaO; and the active ingredients and the aid respectively account for 14 to 34 percent and 0.4 to 1.2 percent of the total mass of the catalyst based on an oxide form. The method for preparing the catalyst comprises the following steps of: preparing the carrier, pretreating the carrier, impregnating, performing catalyst post-treatment and the like; and the catalyst preparation conditions are strictly controlled by introducing novel ultrasonic impregnation technology. Compared with the prior art, the catalyst is excellent in surface physicochemical properties, has good aromatic hydrocarbon saturated activity and proper cracking activity, and excellent high-temperature resistance and compression resistance, and effectively improves the quality and yield of hydrotreated product oil.