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

The invention relates to crystalline aluminium-salt lithium-ion adsorbent particles coated with an inorganic ion exchanger. Adsorption capacity of the adsorbent particles is 11-13 mg/g, and chemical composition of the adsorbent particles is (1-x)LiCl.2Al(OH)3.yMO2.nH2O, wherein MO2 is a mixture of SiO2 and one of TiO2, SnO2 and ZrO2, x=0.5-1, y=0.1-0.5, and n=0.5-1. The inorganic ion exchanger isa nano-oxide hydrosol film formed by TiO2, SnO2 or ZrO2 and SiO2 and serves as an anti-solution-loss coating agent, an ion exchanger and a particle formation binder of a crystalline aluminium-salt adsorbent. By adopting the inorganic ion exchanger to coat a crystalline aluminium-salt lithium-ion adsorbent, solution loss rate of the crystalline aluminium-salt lithium-ion adsorbent can be reduced, higher adsorption and desorption rates can be maintained, adsorbed lithium salts can be desorbed by a water solution, acid-base consumption is not needed, and environmental protection is facilitated.

The invention relates to a lithium ion sieve taking a waste lithium manganate battery material as a raw material, and a preparation method thereof, and especially relates to an aluminum-doped manganese lithium ion sieve filler loaded on an aluminum oxide carrier. The chemical composition of the lithium ion sieve is H1.33Alx Mn1.67O4.yAl2O3, wherein x is equal to 0.03-0.33, and y is equal to 0.06-0.18. The preparation method comprises the following steps: mixing a pretreated waste lithium manganate battery positive electrode material with LiOH, roasting at high temperature to form a precursor, and further delithiating with diluted hydrochloric acid to obtain the lithium ion sieve. In a 0.5 g/L lithium chloride aqueous solution, the lithium ion recovery rate is 95-98%, the adsorption capacity of the lithium ion sieve is 48-54 mg/g, the adsorption capacity change is less than 1% after 10 times of adsorption and desorption, and the dissolution loss is less than 1%. The lithium ion sieve is large in adsorption capacity, high in adsorption and desorption speed, low in production cost and stable in application performance, has industrial application prospects and is suitable for adsorbing and extracting lithium in a low-concentration lithium-containing aqueous solution.

The invention relates to a preparation method of a catalyst for methane reforming with carbon dioxide to synthetic 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 and an additive 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 methane and selectivity of products.

The present invention relates to microcrystalline property aluminum salt lithium ion adsorbent particles coated with macro-porous silica gel and loaded with a lightweight glass material. The particlesize of the adsorbent particles is 0.5 to 2.0mm, the porosity is 20 to 30 percent, and the density is 400 to 800kg/m<3>. The microcrystalline aluminum salt lithium ion adsorbent particles are preparedfrom 55 to 65 percent by mass of aluminum salt, 5 to 10 percent by mass of macro-porous silica gel and the balance of lightweight glass material, and the adsorption capacity of the adsorbent particles is 6 to 8mg/g. The chemical composition of a microcrystalline aluminum salt lithium ion adsorbent is (1-x)LiCl.2Al(OH)3.nH2O, wherein x is equal to 0.5-1, and n is equal to 1-3. The macro-porous silica gel is formed by gelatinization of composite nanometer SiO2 hydrosol, and the pore size of the macro-porous silica gel is 10nm or more. The lightweight glass material is one of hollow glass microspheres with density less than 500kg/m<3>, fly ash float beads, glass fiber powder or foam glass powder. By adopting the adsorbent particles, the solution loss of an adsorbent can be reduced greatly, and the industrial application need is met.

The invention belongs to a bamboo vinegar honeycomb type purifying activated carbon and a preparation method thereof. The bamboo vinegar honeycomb type purifying activated carbon comprises, by weight, 35-40 parts of chemical activated carbon, 25-35 parts of granular activated carbon from coal, 43-49 parts of coconut shell activated carbon, 9-15 parts of bamboo vinegar, 2-3 parts of methyl cellulose and 2-3 parts of talcum powder. The preparation method includes ball grinding, well mixing raw materials, producing product materials, and subjecting the product materials to vacuum pugging, extrusion forming, drying and sintering. The bamboo vinegar honeycomb type purifying activated carbon is good in dirt absorption capability, firm in shaping durable, simple and practical in preparation method, low in sewage treating cost, low-carbon, energy saving, and good in treating effect, and corruption odor generated by toilets, livestock, fish and the like can be purified.

The invention provides a preparation method of a catalyst for reforming of methane and carbon dioxide to prepare syngas. The catalyst comprises an active component, a first auxiliary agent, a second auxiliary agent, and a carrier. The preparation method comprises the following steps: dissolving an active component precursor and a first auxiliary agent precursor into water to obtain a solution (A); then adding a carrier, carrying out aging, drying, and burning to obtain a catalyst precursor (B); reducing the catalyst precursor (B) in a reducing atmosphere; adding the reduced catalyst precursor (B) and a polyol solution into a reactor to carry out hydrogenation reactions, collecting the effluent, filtering, and drying to obtain a catalyst precursor (C); adding an active component precursor and a second auxiliary agent precursor into water to obtain a solution (D), then adding the catalyst precursor (C), drying, and burning to obtain the catalyst. The provided preparation method has the advantages that more active components are dispersed on the surface of carriers, the utilization rate of active metal is improved therefore, and at the same time, the methane conversion rate and product selectivity are both improved.

The invention relates to a preparation method of a catalyst for methane steam reforming to produce hydrogen. The catalyst comprises an active component, an auxiliary agent, and a carrier. The preparation method comprises the following steps: processing the catalyst for waste residual oil hydrogenation to produce a catalyst precursor (A); then reducing the catalyst precursor (A) in a reducing atmosphere; adding the reduced catalyst precursor (A) and a polyol solution into a high pressure reactor to carry out hydrogenation reactions, collecting the effluents of the reactions, filtering, drying to obtain a catalyst precursor (B); dissolving an active component precursor and an auxiliary agent precursor into water to prepare a solution (C), adding the catalyst precursor (B), drying, and burning to obtain the catalyst. The catalyst for waste residual oil hydrogenation is fully utilized to produce the provided catalyst, the cost is reduced, moreover, more active components are dispersed on the surface of carriers, the utilization rate of active metal is improved, and the conversation rate of methane and product selectivity are both improved.

The invention relates to a preparation method of a catalyst for synthetic gas methanation to natural gas. The catalyst comprises an active ingredient, a first additive, a second additive and a carrier. The preparation method is as below: dissolving an active ingredient precursor and a first additive precursor into water to obtain a solution A; adding the carrier, ageing, drying and calcining to obtain a catalyst precursor B; reducing the catalyst precursor B in a reducing atmosphere; adding the reduced catalyst precursor B and a polyol solution into a reactor, and carrying out a hydrogenation reaction; placing a reaction effluent, filtering and dying to obtain a catalyst precursor C; and dissolving an active ingredient precursor and a second additive precursor in water to obtain a solution D, then adding the catalyst precursor C, drying and calcining to obtain the catalyst. The method of the present invention promotes dispersion of more active ingredients on the surface of the carrier, improves the utilization of the active metal, as well as improves the conversion of carbon monoxide 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.