58results about How to "Low pore volume" patented technology

The invention provides a metal organic framework material used for absorbing and separating CO2 and a preparation method thereof. The metal organic framework material is a rigid metal carboxyl compound cluster-like structure which is formed by transition metal ions and multidentate organic ligands through covalent bonds and intermolecular forces. An amine polymer is modified on the metal organic framework material; and the metal organic framework material used for absorbing and separating the CO2 has a specific surface area of 1,000 to 1,200 m<2>/g, and a pore volume of 0.4 to 0.6 cm<3>/g. The preparation method comprises the following steps of: respectively dissolving the nitrate, the chloride or the carbonate of copper or zinc and 1,3,5-trimesic acid together in a stoichiometric ratio in water or an organic solvent; mixing uniformly and sufficiently to react to obtain a BTC bridged complex crystal; and applying a product obtained by reacting an obtained BTC bridged complex crystal with the solution of polyethyleneimine to the metal organic framework material used for absorbing and separating the CO2. The material can realize selective absorption of a gas under a low pressure.

The invention discloses a method for preparing a hydrocracking catalyst. The method comprises the following steps of carrying out hydrothermal treatment on alumina dry gel powder, uniformly mixing the treated alumina dry gel powder and at least one acidic cracking material powder, dipping the mixture into a hydrogenation active ingredient-containing metal salt solution, carrying out filtration, drying and crushing, adding a peptizing agent or a binder into the crushed product, and carrying out molding, drying and calcination to obtain the hydrocracking catalyst. The hydrocracking catalyst has high hydrogenation active ingredient content, a large pore volume, a large aperture size and a large specific surface area, and is suitable for hydrocracking of a heavy vacuum distillate having a higher boiling point.

The invention discloses a hydrocracking catalyst and a preparation method thereof. The preparation method comprises the following steps: 1, dipping aluminum hydroxide xerogel powder used in a carrier in a solution containing a hydrogenation metal component; 2, drying the powder; and 3, fully rolling, molding and roasting the powder together with molecular sieve under the action of a peptizer or a binder to obtain the catalyst. The catalyst of the invention is obtained only through one-time high temperature roasting, so the preparation method is simple, and the preparation cost is obviously reduced. In addition, the hydrogenation center and the cracking center of the catalyst of the invention coordinate and cooperate with each other, so the catalyst has a high catalytic activity, and the catalyst which simultaneously has a large specific surface area and a large pore volume is suitable for processing catalytic process for the high productivity of naphtha by hydrocracking high-dry-point low-quality reduced pressure distillate oil.

The invention discloses a preparation method of a sulfurization type hydro-cracking catalyst. The preparation method comprises the following steps: selecting a hydro-cracking catalyst carrier component, wherein the carrier component at least comprises an acidic cracking component; adding water into the carrier component powder, pulping so as to obtain slurry (c), then adding sulfo-molybdate and/or sulfo-tungstate slurry (a) and a nickel salt and/or cobalt salt solution (b) into the slurry (c), evenly stirring, filtering, washing, drying in the protection of inert gas, adding an adhesive, kneading, forming, and finally drying and burning in the protection of inert gas so as to obtain the sulfurization type hydro-cracking catalyst. The preparation method makes the active metal be evenly distributed on the carrier so as to generate more II type Ni(Co)Mo(W)S active phases with a higher activity; thus the catalyst has a high sulfurization degree and a high utilization rate of active metal, so that the hydrogenation performance of the catalyst is improved.

The invention discloses a high-specific surface area mesoporous nickel oxide hydrogenation catalyst and a preparation method of the high-specific surface area mesoporous nickel oxide hydrogenation catalyst. The preparation method of the catalyst comprises the following steps of: taking high-specific surface area mesoporous nickel oxide as a carrier and active metal, taking sol prepared by peptizing agent and metallic nickel inorganic salt as binder, kneading in a mixing way, forming by means of strip squeezing, drying and roasting, so that the catalyst can be prepared. The high-specific surface area mesoporous nickel oxide carrier used in the catalyst disclosed by the invention takes nickel salt as a nickel source, non-ionic surface active agent as structure-directing agent, and organic matter having the function of solubilization as auxiliary pore-forming agent, and is prepared by a sol-gel method. According to the catalyst disclosed by the invention, the problems that the nickel hydrogenation catalyst is prepared by taking nickel oxide and aluminum oxide as carriers, the specific surface area of the catalyst is reduced, and the pore volume is lowered when the nickel content is higher in the catalyst in the prior art can be solved; and the catalyst is high in hydrogenation activity, high in raw material adaptability, and good in running stability.

The present invention relates to preparation process of hydrocarbon hydroprocessing catalyst, which has gamma-Al2O3 as carrier, VIB and VIII metal as the active component, and Ti, etc as the active assistant, with the assistant Ti being introduced in the pH swinging carbonization process for producing aluminum hydroxide. The process of preparing the catalyst is one complete mixing and kneading process including the steps of introducing Ti to aluminum hydroxide powder via adding Ti salt solution, adding Mo and/or W containing alkaline solution, mixing and kneading until the aluminum hydroxide powder is wetted completely by the alkaline solution, adding Co and/or Ni containing acid solution, mixing and kneading to obtain plastic material, extruding, drying, and roasting to obtain the catalyst. The catalyst has homogeneously distributed Ti component and obviously raised performance.

The invention discloses a preparation method of a hydrocracking catalyst. The preparation method comprises the following steps of carrying out low-temperature hydro-thermal treatment on alumina dry gel powder in the ammonia-containing water vapor atmosphere, dipping the alumina dry gel powder subjected to hydro-thermal treatment into a solution containing a hydrogenation active metal ingredient, carrying out drying, and carrying out full grinding, molding, drying and calcination of the alumina dry gel powder with the hydrogenation active metal ingredient, and a molecular sieve in the presence of a peptizer or a binder to obtain the hydrocracking catalyst. The preparation method improves a catalyst pore structure. The hydrocracking catalyst obtained by the preparation method has a large specific surface area and a large pore volume, is conducive to optimized cooperation of a hydrogenation ingredient and a cracking ingredient, has high catalytic activity, and is suitable for hydrocracking yield-increasing of high-quality heavy naphtha from vacuum distillate having a high dry point and poor quality and for a catalytic process for improvement of tail oil product quality.

The invention discloses a method for utilizing waste hydro-treatment catalyst. The method utilizes waste hydro-treatment catalysts which have been used in partial oxidation of propane to prepare acrolein and hydro-treatment, recycles the Mo, Co, Ni, and alumina carriers in waste hydro-treatment catalysts, also fully recycles Ni and V which are deposited on the waste hydro-treatment catalysts, thus solves the pollution problem caused by waste catalysts, saves the resources, increases the economic profit, and is easy to carry out in technology.

The invention relates to a preparation method for a catalyst to hydrotreat hydrocarbons, which comprises gama- Al2O3 as carrier, metal from VIB group and VIII group as active constituents, and Ti as active adjuvant. The prepraration method comprises: adding titanate solution to bring said Ti during the gelatinization for preparing aluminum hydroxide; adding basic solution contained Mo or W into the dried aluminum hydroxide powder, mixing till the powder wet fully by solution; adding acid solution contained Co or Ni, mixing till plastic, extruding to form, drying, baking, and obtaining the catalyst. This invention improves the catalyst property obviously.

The invention discloses a modified activated carbon. The modified activated carbon is characterized in that a S-TiO2 photocatalyst is loaded on the active carbon. A method for preparing the modified activated carbon comprises the following steps of: adopting an inorganic salt or alcohol salt of titanium as a TiO2 precursor, adopting thiourea as a sulfur source, hydrolyzing sol for preparing inorganic hydrated metal oxide S-TiO2, adding the PEG and the activated carbon, stirring or ultrasonically mixing to be uniform, carrying out dipping treatment, drying and roasting the activated carbon after dipping treatment, and obtaining the modified activated carbon. The activated carbon can adopt a gas-solid fluidized bed photocatalytic method for regeneration. The modified activated carbon belongs to a suitable novel absorbent. The gas-solid fluidized bed photocatalytic method is simple, no secondary pollution is caused, the loss of the activated carbon is less, and the mechanical strength is not changed basically, so that the activated carbon and the regeneration technology thereof disclosed by the invention are environmentally-friendly.

The invention discloses a preparation method of a hydrocracking catalyst. The preparation method comprises carrying out low-temperature hydro-thermal treatment on alumina dry gel powder, dipping the alumina dry gel powder into a hydrogenation active metal-containing solution, carrying out drying, and carrying out full grinding, molding, drying and calcination of the dipped material with a molecular sieve in the presence of a peptizing agent or a binder. The preparation method improves a catalyst pore structure. The hydrocracking catalyst has a large specific surface area and a large pore volume, is conducive to optimization cooperation of a hydrogenation ingredient and a cracking ingredient, has high catalytic activity, and is suitable for hydrocracking yield-increasing of high-quality heavy naphtha from vacuum distillate having a high dry point and poor quality and for improvement of tail oil product quality.

The invention relates to a method for preparing an SCR denitration catalyst at low temperatures. The method includes dissolving a titanium source in absolute ethyl alcohol, regulating the pH value to2-6 by an organic acid solution, adding a rare earth metal precursor, mixing a pore-forming agent, stirring to react at 60-90 DEG C for 2-8 hours, drying after the ethyl alcohol evaporates, and roasting at 500-800 DEG C for 8-12 hours so as to obtain a molecular sieve carrier; impregnating the molecular sieve carrier by one or more of a precursor metal salt of a transition metal oxide, an acid solution or a complex for 2-8 hours, and drying at a room temperature so as to obtain an impregnated molecular sieve catalyst of the precursor metal salt, the acid solution or the complex; roasting the impregnated molecular sieve catalyst in a muffle furnace for 500-800 DEG C so as to obtain the SCR denitration catalyst. When used in catalytic cracking flue gas, the catalyst is low in SCR denitrationreaction temperature, good in activity, high in conversion rate and long in service life, thereby having promising application prospect.

The invention relates to a preparation method of a high-metal-content hydrogenation catalyst, comprising the steps of depositing an aluminum source modifier to a carrier; mixing a metal, phosphoric acid, an organic complexing agent and deionized water; impregnating the mixture to the carrier on which the aluminum source modifier is deposited; drying and calcining the carrier on which the mixture is impregnated; wherein the metal is made from a main component, Mo in VIB, and an aid component, Ni in VIII, the aluminum source modifier is one, or a composition of any, of aluminum isopropoxide, aluminum chloride and aluminum nitrate, the carrier on which the aluminum source modifier is deposited is 1.3-2.3 ml/g in pore volume and 400-700 m<2>/g in specific surface area, and pores 14-18 nm in diameter accounts for greater than 50%. The preparation method of the high-metal-content hydrogenation catalyst provided herein has significantly improved activity and good pore structure and large specific surface area since metal carrying capacity is increased; the preparation process of the catalyst is simplified, and the preparation cost of high-metal-content hydrogenation catalyst is reduced.

A preparation method of a layered porous active carbon electrode material for a supercapacitor relates to the technical field of a supercapacitor electrode material. The layered porous active carbon electrode material for the supercapacitor is obtained by the steps of mixing casing after being carbonized with KOH and deionized water under an ultrasonic condition, performing drying to obtain a mixture, activating the mixture in a nitrogen atmosphere and finally performing grinding. The casing is rich in source, can be reproduced and is environmental-friendly, the active carbon material preparedby a simple processing technology has a layered structure, developed specific area and reasonable aperture distribution and has relatively good capacitance performance in the supercapacitor when usedas the electrode material. The preparation process is simple and easy to operate and has important significance to reduction of the production cost of high-surface active carbon for the supercapacitor.

The invention discloses a preparation method of a catalyst for oxidative hydrogenation of propane. The method comprises the following steps: grinding waste residual oil desulfurization catalysts into powder, adding a strong inorganic acid into the powder, filtering, adding an organic acid into the filtrate, then adding pseudo-boehmite, stirring the solution and heating at the same time until the solution is totally evaporated so as to obtain a solid substance, and then subjecting the solid substance to processes of drying, burning, and forming so as to obtain the catalyst for oxidative hydrogenation of propane. The preparation method fully utilizes the waste residual oil hydro-desulfurization catalysts, improves the resource utilization rate, and greatly reduces the cost; furthermore, the obtained catalyst has a large specific surface area, the active metal is highly dispersed on the catalyst surface, thus the utilization rate of active metal is improved, so the catalytic activity and selectivity of the catalyst are both improved.

A carbon material suitable for the preparation of electrodes for electrochemical capacitors is obtained by single-stage carbonization of biopolymers with a large content of heteroatoms. Neither addition of an activating agent during carbonization nor subsequent gas phase activation is necessary. Several biopolymers which are available by extraction from seaweed are suitable precursors. Alternatively, the seaweed containing such biopolymers is carbonized directly.

The invention discloses a porous silicon dioxide carrier as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) impregnating silicon dioxidepowder with an acid solution of a saccharide compound, and dehydrating and carbonizing the impregnated material to obtain silicon dioxide with protected pore channels, namely a carbon-containing precursor; and (2) roasting the carbon-containing precursor obtained in the step (1) to obtain the porous silicon dioxide. The specific surface area of the porous silicon dioxide is not less than 200m<2>/g, and the pore volume is not less than 1.0 ml/g. When being used as an isobutylene oxyacetylation catalyst carrier, the porous silicon dioxide has better catalytic performance, and has the advantagesof high conversion rate and high stability.

The invention discloses a method for preparing a sintering-free high-stability mesoporous silica-aluminum material from silica fume and aluminum ash and a product. The method comprises the following steps: weighing silica fume and aluminum ash, mixing, and grinding at a high speed of 500-2500 rpm for 5-15 minutes to obtain activated silicon-doped aluminum ash; respectively weighing an ammonium bicarbonate water solution and activated silicon-doped aluminum ash, mixing, stirring at a rotating speed of 30-150 rpm, at the same time, carrying out low-temperature plasma irradiation for 1-2 hours toobtain silicon-doped aluminum slurry; and drying and cooling the silicon-doped aluminum slurry to obtain the sintering-free high-stability mesoporous silica-aluminum material. The maximum values of the pore diameter, the pore volume and the specific surface area of the prepared mesoporous silica-aluminum material is 13.3 nm, 0.65 cm<3>/g and 512 m<2>/g respectively, and the pore diameter change rate, the pore volume change rate and the specific surface area change rate of the mesoporous silica-aluminum material pretreated at 900 DEG C for 1 hour are all lower than 4%.

The invention relates to a chemical component for hydrogen production by hydrolysis of sodium borohydride. The chemical component provided by the invention is composed of borohydride, acid and water,wherein borohydride and acid are both solid powder. According to the invention, the borohydride is NaBH4 and the acid is H3BO3. The formula consists of: 10-17% of NaBH4, 50-70% of H3BO3, and the balance water. The chemical component has the advantages of high efficiency hydrogen production, safety, environmental protection, convenient use and the like. NaBH4 has high hydrogen storage density and can react with water to generate H2 at room temperature, however, along with the progress of the reaction, the pH of the solution gradually increases, the reaction decreases gradually, and the reactionefficiency is low. Adding of H3BO3 into the system can reduce the pH of the solution and increase the reaction efficiency. H2 is the only gas in the reaction product, thus ensuring the high concentration of H2, and the by-product can be recycled. NaBH4 and H3BO3 are inexpensive, and the hydrogen production cost is low.

The invention discloses a preparation method of a catalyst for partial oxidation of isobutene to prepare methylacrolein. The preparation method comprises the following steps: grinding waste hydro-treatment catalysts into powder, dissolving the powder in a strong inorganic acid, filtering, then adding a precursor of Bi, adding an alkaline solution to adjust the pH value to a range of 7.0 to 10.0, then adding a strong alkaline solution to adjust the pH value to a range of 12.0 to 14.0, heating and stirring at the same time, filtering so as to obtain the precipitant, washing, drying, and burning the precipitant, and finally forming so as to obtain the catalyst. The preparation method recycles the active metals in waste hydro-treatment catalysts, and at the same time fully utilizes the Fe, Ni and V which are deposited on the waste catalysts to prepare the catalyst, which has the advantages of large specific surface area and high activity and is used to catalyze partial oxidation of isobutene to prepare methylacrolein; wherein the byproduct of the preparation method is meta-aluminate. The preparation method has the advantages of simpleness and easy operation, and is capable of fully utilizing the carriers and metals in waste hydro-treatment catalysts.

The invention discloses a co-impregnation solution and a preparation method of a catalyst obtained by hydrofining paraffin oil. The preparation method is characterized by comprising the following steps of preparing a catalyst carrier; preparing an aqueous solution of ammonium metatungstate, ammonium paramolybdate or ammonium tetramolybdate, nickel nitrate and orthophosphoric acid as the co-impregnation solution at the room temperature, wherein the co-impregnation solution comprises, by concentration, 16-30 g/100ml of WO<3>, 11-16 g/100ml of MoO<3>, 7-10 g/100ml of NiO and 3.5-5.5 g/100ml of P; impregnating the carrier obtained in step 1 one time with the obtained co-impregnation solution at the room temperature; firstly, drying the impregnated carrier at the room temperature, and then conducting heating and drying under water-vapor atmosphere, so that the catalyst is obtained, wherein calcinations is conducted while heating and drying are conducted. The catalyst prepared through the method is uniform in active component distribution, large in pore volume and specific surface area and high in desulfuration activity and denitrification activity.