33results about How to "Accelerate the speed of adsorption and desorption" patented technology

The invention relates to a preparation method of a catalyst for oxidative dehydrogenation of ethane to produce ethylene. The catalyst includes an active component, a first auxiliary agent, a second auxiliary agent and a carrier. The preparation method first prepares the active component precursor and the second auxiliary agent An auxiliary agent precursor is dissolved in water to obtain a solution A; then a carrier is added to obtain a catalyst precursor B after aging, drying, and roasting; a reducing atmosphere is used to reduce the catalyst precursor B; the reduced catalyst precursor B and the polyol solution are added to the reactor for hydrogenation reaction, the reaction effluent is placed, then filtered and dried to obtain the catalyst precursor C; the active component precursor and the second auxiliary agent precursor are dissolved in water to obtain the solution D , and then add the catalyst precursor C, after drying and roasting, the catalyst is obtained. The method of the invention promotes the dispersion of more active components on the carrier surface, not only improves the utilization rate of active metals, but also improves the conversion rate of ethane and the selectivity of ethylene.

The invention aims to provide a preparation method for mixed active carbon. The mixed active carbon is prepared from China hemp stems and tree roots through activation, kneading and extrusion by using a one-step phosphoric acid activation method. Selection of active carbon made of corresponding materials according different adsorption objects has not been reported in current single active carbon application technology. Normally, active carbon is prepared from a single material in the prior art, which leads to low adsorption rate and poor adsorption effect of the active carbon. The active carbon prepared in the invention has a high specific surface area, a good dirt adsorption function and the advantages of firm shaping, usage of the waste, low pollution treatment cost, low carbon, energy conservation and good treatment effect.

The invention relates to a method for preparing a catalyst for oxidative dehydrogenation of propane to produce propylene. The catalyst includes an active component, an auxiliary agent and a carrier. The method for preparing the catalyst comprises: treating a waste residue oil hydrogenation catalyst to prepare a catalyst precursor A; then use a reducing atmosphere to reduce the catalyst precursor A; add the reduced catalyst precursor A and polyol solution to the autoclave for hydrogenation reaction, place the reaction effluent and then filter and dry to obtain the catalyst Precursor B: Dissolving the active component precursor in water to obtain solution C, then adding catalyst precursor B, drying and roasting to obtain the catalyst. The method of the present invention not only makes full use of the waste residue oil hydrotreating catalyst, saves costs, but also promotes the dispersion of more active components on the surface of the carrier, which not only improves the utilization rate of active metals, but also improves the conversion rate of propane and propylene selectivity.

The invention relates to nano-silver honeycomb-type purification activated carbon and a preparation method thereof. The nano-silver honeycomb-type purification activated carbon uses the following raw materials in part by weight: 32 to 38 parts of chemical activated carbon, 25 to 30 parts of granular activated carbon from coal, 35 to 42 parts of cocoanut active charcoal, 4 to 6 parts of nano-silver with purity of 99 percent, 1 to 2 parts of methylcellulose and 1 to 2 parts of talcum powder. The method comprises the following steps: carrying out ball milling, mixing the raw materials with uniformly stirring to obtain a product material; carrying out vacuum pugging, extrusion forming, air-drying and sintering to obtain the nano-silver honeycomb-type purification activated carbon. According to the invention, the activated carbon can be guaranteed to have an excellent dirt adsorption function, also can have an excellent effect of killing and inhibiting microorganisms which are pathogenic for people, is suitable for the environment such as a hospital and the like, and also has the advantages of firmness for sizing, durability, simple and practicable method, low pollution control cost, low carbon, energy saving and good treatment effect.

The invention provides a method for preparing a catalyst for reforming methane and carbon dioxide to synthesize gas. The catalyst includes an active component, a first auxiliary agent, a second auxiliary agent and a carrier. In the preparation method, the active component precursor and the second auxiliary agent are first prepared. An auxiliary agent precursor is dissolved in water to obtain a solution A; then a carrier is added to obtain a catalyst precursor B after aging, drying, and roasting; a reducing atmosphere is used to reduce the catalyst precursor B; the reduced catalyst precursor B and the polyol solution are added to the reactor for hydrogenation reaction, the reaction effluent is placed, then filtered and dried to obtain the catalyst precursor C; the active component precursor and the second auxiliary agent precursor are dissolved in water to obtain the solution D , and then add the catalyst precursor C, after drying and roasting, the catalyst is obtained. The method of the invention promotes the dispersion of more active components on the carrier surface, not only improves the utilization rate of active metals, but also improves the conversion rate of methane and the selectivity of products.

The invention relates to a conductive doped antimonic acid lithium-ion adsorption agent, in particular to an antimonic acid lithium-ion adsorption agent wrapped by doped stannic oxide and loaded by ananticorrosion conductive material. The lithium ion adsorption capacity is 15-20 mg / g; the mass of doped antimonic acid accounts for 50-60% of that of the lithium-ion adsorption agent, and the chemical composition of doped antimonic acid is H1+xSnxSb1-xO3, wherein x=0.02-0.1; the mass of doped stannic oxide accounts for 5-15% of that of the lithium-ion adsorption agent, the chemical composition ofdoped stannic oxide is SbySn1-yO2, wherein y=0.02-0.1; and the mass of the anticorrosion conductive material accounts for 20-30% of that of the lithium-ion adsorption agent, and the anticorrosion conductive material is one of conductive graphite powder, graphene powder, conductive carbon black, conductive carbon fiber powder, conductive oxide microsphere or anticorrosion foam metal powder. The adsorption and desorption process of the lithium-ion adsorption agent is strengthened by adopting an electrochemical method, the adsorption and desorption speed of lithium ions is increased, and the adsorption capacity of the lithium ions is improved.

The invention relates to a preparation method of a catalyst for oxidative dehydrogenation of propane to propylene. The catalyst includes an active component, a first auxiliary agent, a second auxiliary agent and a carrier; the preparation method of the catalyst first prepares the active component precursor, the first The auxiliary agent precursor is dissolved in water to obtain a solution A; the catalyst precursor B is obtained after adding a carrier, aging, drying, and roasting; the catalyst precursor B is reduced using a reducing atmosphere; the reduced catalyst precursor B is mixed with polyol The solution is added to the reaction kettle for hydrogenation reaction; the reaction effluent is placed, filtered and dried to obtain catalyst precursor C; the active component precursor and the second auxiliary agent precursor are dissolved in water to obtain solution D, and catalyst precursor C is added , after drying and roasting, the catalyst is obtained. The method of the invention promotes the dispersion of more active components on the carrier surface, not only improves the utilization rate of active metals, but also improves the conversion rate of propane and the selectivity of propylene.

The invention relates to a preparation method of a catalyst for synthetic gas methanation to substitute natural gas. The catalyst comprises an active ingredient, an additive and a carrier. The preparation method is as below: treating a waste residue oil hydrogenation catalyst to prepare a catalyst precursor A; reducing the catalyst precursor A in a reducing atmosphere; adding the reduced catalyst precursor A and a polyol solution into a high pressure reactor, carrying out a hydrogenation reaction, placing a reaction effluent, filtering and dying to obtain a catalyst precursor B; and dissolving an active ingredient precursor in water to obtain a solution C, then adding the catalyst precursor B, drying and calcining to obtain the catalyst. The method of the present invention not only makes full use of waste residue oil hydrogenation catalyst, saves cost, but also promotes dispersion of more active ingredients on the surface of the carrier. The method improves the utilization of the active metal, and the conversion of carbon monoxide and selectivity of products.

The invention relates to a method for preparing a catalyst for steam reforming of methane to produce hydrogen. The catalyst includes an active component, an auxiliary agent and a carrier. The method for preparing the catalyst comprises: treating the waste residue oil hydrogenation catalyst to prepare the catalyst body A; then the catalyst precursor A is reduced using a reducing atmosphere; the reduced catalyst precursor A and polyol solution are added to the autoclave for hydrogenation reaction, and the reaction effluent is placed and then filtered and dried to obtain Catalyst precursor B: Dissolving the active component precursor and auxiliary agent precursor in water to obtain solution C, then adding catalyst precursor B, drying and roasting to obtain the catalyst. The method of the invention not only makes full use of the waste residue oil hydrotreating catalyst, saves costs, but also promotes the dispersion of more active components on the surface of the carrier, which not only improves the utilization rate of active metals, but also improves the conversion rate of methane and the product selectivity.

The invention relates to a method for preparing a catalyst for producing natural gas through complete methanation of synthesis gas. The catalyst includes an active component, an auxiliary agent and a carrier. The method for preparing the catalyst comprises: treating a waste residue oil hydrogenation catalyst to prepare a catalyst precursor A ; Then adopt reducing atmosphere to carry out reduction treatment to catalyst precursor A; Add the reduced catalyst precursor A and polyhydric alcohol solution in the autoclave to carry out hydrogenation reaction, place the reaction effluent and then filter and dry to obtain the catalyst precursor Body B; the active component precursor is dissolved in water to obtain solution C, and then catalyst precursor B is added, and after drying and roasting treatment, the catalyst is obtained. The method of the invention not only makes full use of the waste residue oil hydrotreating catalyst, saves cost, but also promotes the dispersion of more active components on the surface of the carrier, which not only improves the utilization rate of active metals, but also improves the conversion rate of carbon monoxide and the product selectivity.

The invention relates to a method for preparing a catalyst for steam reforming of methane to produce hydrogen. The catalyst includes an active component, an auxiliary agent and a carrier. The preparation method firstly dissolves the precursor of the active component in water to obtain a solution A; then Adding carrier, after aging, drying, and roasting, the catalyst precursor B is obtained; the catalyst precursor B is reduced by using a reducing atmosphere; the reduced catalyst precursor B and the polyol solution are added to the reactor for hydrogenation reaction , place the reaction effluent, then filter and dry to obtain catalyst precursor C; dissolve the active component precursor and auxiliary agent precursor in water to obtain solution D, then add catalyst precursor C, after drying and roasting, obtain catalyst. The method of the invention promotes the dispersion of more active components on the carrier surface, not only improves the utilization rate of active metals, but also improves the conversion rate of methane and the selectivity of products.

The invention relates to a method for preparing a synthesis gas methanation catalyst. The preparation method of the catalyst firstly prepares a catalyst precursor A; then uses a reducing atmosphere to reduce the catalyst precursor A; and combines the reduced catalyst precursor A with The polyol solution is added to the autoclave for hydrogenation reaction, the reaction effluent is placed and then filtered and dried to obtain the catalyst precursor B; the active component precursor and the second auxiliary agent precursor are dissolved in water to obtain the solution C , and then add the catalyst precursor B, after drying and roasting, the catalyst is obtained. The method of the invention promotes the dispersion of more active components on the carrier surface, not only improves the utilization rate of active metals, but also improves the conversion rate of carbon monoxide and the selectivity of products.

The invention relates to a catalyst preparation method for methane carbon dioxide reforming to produce synthesis gas. The catalyst includes an active component, an auxiliary agent and a carrier. The catalyst preparation method comprises: treating waste residue oil hydrogenation catalyst to prepare the catalyst before body A; then the catalyst precursor A is reduced using a reducing atmosphere; the reduced catalyst precursor A and polyol solution are added to the autoclave for hydrogenation reaction, and the reaction effluent is placed and then filtered and dried to obtain Catalyst precursor B: Dissolving the active component precursor and auxiliary agent precursor in water to obtain solution C, then adding catalyst precursor B, drying and roasting to obtain the catalyst. The method of the invention not only makes full use of the waste residue oil hydrotreating catalyst, saves costs, but also promotes the dispersion of more active components on the surface of the carrier, which not only improves the utilization rate of active metals, but also improves the conversion rate of methane and the product selectivity.

The invention belongs to honeycomb type nano zinc oxide purifying activated carbon and a preparation method thereof. The honeycomb type nano zinc oxide purifying activated carbon is prepared from raw materials of, by weight, 17-28 parts of chemical activated carbon, 15-25 parts of coaly granular activated carbon, 50-60 parts of coconut shell activated carbon, 4-6 parts of nano zinc oxide 99% in purity, 1-2 parts of methylcellulose and 1-2 parts of talc powder. The method includes the steps of performing ball milling, raw material mixing and uniform stirring to prepare product materials, and then preparing the honeycomb type nano zinc oxide purifying activated carbon via vacuum pugging, extrusion forming, airing and sintering. By the method, the activated carbon can have an excellent contaminant absorption function, can decompose poisonous gases such as formaldehyde, ammonia and benzene absorbed therein under the action of ordinary light, in other words, has a self-purifying function, and further has the advantages of being formable, firm, durable in use, simple and feasible in method, low in pollution treatment cost, low-carbon, energy saving and good in treatment effect.