62results about How to "Easy for industrial scale-up production" patented technology

The invention belongs to the technical field of nanometer materials, and particularly relates to a COF nanotube, and a preparation method and application thereof. According to the method, silicon dioxide nanowires are used as a hard template, and the silicon dioxide nanowires can be deposited on the surfaces of stainless steel wires and other materials through soaking and extraction methods to form a silicon dioxide nanowire film; and with the dispersed silicon oxide nanowires or the film with the deposited silicon dioxide nanowires as a substrate, a layer of COF film grows in situ, and the silicon oxide nanowire template is etched to respectively obtain the dispersed COF nanotube and a stainless steel wire modified by a COF nanotube film. Due to rich micropores of the COF, the COF nanotube has a very high specific surface area, and a hollow pipeline structure provides a rapid substance transmission channel for molecules, so the COF nanotube is an ideal separation and enrichment material and can be used for effectively enriching trace organic pollutants in a solution. The stainless steel wire modified by the COF nanotube film can be used as a stainless steel wire solid-phase micro-extraction head and is used as a pretreatment material for quantitative enrichment and purification of harmful substances.

The present invention relates to a catalyst for cyclobutenesulfphone hydrogenation, its general formula is NixCoyBmPn, in which x=0-80, y=0.70, m=0-50 and n=0-50. It is an amorphous alloy, and possesses high low-temp. activity, and is easy to industrial production.

The invention discloses a method for synthesizing a metal-modified SAPO-34 molecular sieve. The method comprises the following steps: preparing a metal salt into an aqueous solution; adding an aluminum source to be stirred uniformly; then, filtering, washing, drying, calcining at a low temperature, and then re-dispersing in a small amount of water; sequentially adding a phosphorus source, a silicon source and a template agent; stirring to form a gel mixture; and ageing, crystallizing, washing, drying and calcining to prepare the metal-modified SAPO-34 molecular sieve. The metal-modified SAPO-34 molecular sieve prepared in the invention has relatively high crystallinity, shows high low-carbon olefin selectivity when use for catalyzing reaction of preparing olefin from methanol, has the advantages of high ethylene selectivity, yield, low synthesis costs and easy industrial large-scale production.

The invention provides a Cu-Fe-based catalyst used in synthesis of a higher alcohol with synthetic gas having high C5<+> alcohol selectivity and a preparation method thereof. The expression of the catalyst is CuxFeyMz / SiO2, CuxFeyMz / Al2O3 or CuxFeyMz / (SiO2+Al2O3), wherein M is one or the combination of a transition metal element, an alkali metal element, an alkali earth metal element or a rare earth element; a catalyst carrier is SiO2 or Al2O3 or a mixture of SiO2 and Al2O3; the percentages by weight of active ingredients, i.e., Cu, Fe and M loaded in the catalyst are x, y and z based on the total weight of the catalyst; y / x=0.5-2; z / x=0.001-0.4; x+y+z is more than or equal to 20 percent and less than or equal to 85 percent; and the balance is a catalyst carrier. The catalyst is prepared by soaking and performing stepwise reduction. The Cu-Fe-based catalyst can be used in a process for synthesizing a higher alcohol with synthetic gas. The catalyst has low cost, a simple preparation method and stable performance, and is easy for industrial scale-up production. Compared with catalysts of the same type, the catalyst used in synthesis of the higher alcohol with synthetic gas has the advantages of mild reaction condition and low requirement on reaction equipment.

The invention relates to a method for synthesis of 2,2,4-trimethyl-1,2-dihydroquinoline and a polymer thereof by high-throughput microchannel reactors. A mixture of acetone and aniline hydrochloride is used as a starting reaction raw material and is injected into a microchannel reactor system for reaction, wherein the microchannel reactor system is composed of 1-10 pieces of microchannel reactors which are connected together in series and can be used for continuous flowing, the single-piece reactors are connected together in series by microchannels having the shape similar to a heart shape, and the liquid holdup amount is 8-10 ml; and a continuous flowing reaction is carried out. Through a heat carrier circulation system, the reaction temperature is set to 90-120 DEG C, the pressure is set to 0-10 bar, and the reaction standing time is set to 20-200 s; the obtained solution is cooled by a condenser and is collected, unreacted acetone is removed by distillation, and the target product is obtained. The preparation method provided by the invention has the advantages of continuous reaction performing, short required reaction time, no amplification effect, and strong versatility, does not require to remove generated water during the reaction process, and can be applied to various liquid-liquid, gas-liquid and other chemical reactions.

The invention relates to a method for synthesis of 2,2,4-trimethyl-1,2-dihydroquinoline and a polymer thereof by high-throughput microchannel reactors. A mixture of acetone and aniline hydrochloride is used as a starting reaction raw material and is injected into a microchannel reactor system for reaction, wherein the microchannel reactor system is composed of 1-10 pieces of microchannel reactors which are connected together in series and can be used for continuous flowing, the single-piece reactors are connected together in series by microchannels having the shape similar to a heart shape, and the liquid holdup amount is 8-10 ml; and a continuous flowing reaction is carried out. Through a heat carrier circulation system, the reaction temperature is set to 90-120 DEG C, the pressure is set to 0-10 bar, and the reaction standing time is set to 20-200 s; the obtained solution is cooled by a condenser and is collected, unreacted acetone is removed by distillation, and the target product is obtained. The preparation method provided by the invention has the advantages of continuous reaction performing, short required reaction time, no amplification effect, and strong versatility, does not require to remove generated water during the reaction process, and can be applied to various liquid-liquid, gas-liquid and other chemical reactions.

The invention provides a Cu-Fe-Co base catalyst which has higher C2<+> alcohol selectivity and is used for synthesizing low carbon alcohol by utilizing synthesis gas and a preparation method thereof. The expression of the catalyst is CuaFebCocMd / SiO2, or CuaFebCocMd / Al2O3 or CuaFebCocMd / (SiO2+Al2O3), wherein M is one or a combination of more than one of transitional metal element, alkali metal, alkaline earth metal and rare-earth element, and a catalyst carrier is SiO2 or Al2O3 or a mixture of SiO2 and Al2O3; and loaded active components Cu, Fe, Co and M in the catalyst respectively account for a, b, c and d of the total weight of the catalyst (wt%), a is 10-35%, b is 10-35%, c is 1-10%, d is 0-5%, and the catalyst carrier accounts for 15-79%. The catalyst is prepared by adopting the steps of impregnation and substep reduction. The Cu-Fe-Co base catalyst provided by the invention can be applied to the low carbon alcohol process by virtue of the synthesis gas. The catalyst provided by the invention has low cost, a simple preparation method and stable performance, and the industrial amplification production is easy to realize; and compared with similar catalysts, the catalyst provided by the invention has mild reaction conditions and low reaction equipment requirements when being used for synthesizing the low carbon alcohol by utilizing the synthesis gas.

The invention provides a natural nano-material attapulgite-supported Cu-Fe-based multi-component catalyst, a preparation method thereof and an application in the synthesis of low-carbon alcohols. Its expression is Cu a Fe b m c / ATP; Wherein the auxiliary agent M is a combination of one or more elements in transition metal elements, alkali metals or rare earth elements; the Cu, Fe and M supported in the catalyst account for the total amount of the catalyst respectively a, b and c, and a=10-35%, b=10-25%, c=1-10%, and the rest is catalyst carrier ATP. The acid-modified attapulgite with a large specific surface area was prepared by modifying the natural attapulgite raw material with inorganic acid, and then used as a carrier, which was prepared by impregnation in a mixed aqueous solution of metal salts of Cu, Fe and other components. have to. The attapulgite-supported Cu-Fe-based multi-component catalyst of the present invention can be used in the process of synthesizing low-carbon alcohol from syngas. Attapulgite, a natural nanometer material with abundant resources and low price in my country, is used as a carrier, and has low cost, simple preparation method, stable performance, and easy industrial scale-up production.

The present invention relates to a catalyst for cyclobutenesulfphone hydrogenation, its general formula is NixCoyBmPn, in which x=0-80, y=0.70, m=0-50 and n=0-50. It is an amorphous alloy, and possesses high low-temp. activity, and is easy to industrial production.