102 results about "Combinatorial catalysis" patented technology

The invention discloses a method for preparing organic carboxylic ester by combined catalysis of an aryl bidentate phosphine ligand. The method comprises the following steps: under the action of a palladium compound / aryl bidentate phosphine ligand / acidic additive combined catalyst, carrying out a hydrogen esterification reaction on terminal olefin, carbon monoxide and alcohol so as to generate theorganic carboxylic ester with one more carbon than olefin. According to the invention, by adoption of the palladium compound / aryl bidentate phosphine ligand / acidic additive combined catalyst, good catalytic activity and selectivity for the hydrogen esterification reaction of the olefin are achieved, and olefin carbonylation to synthesize organic carboxylic ester can be efficiently catalyzed. Thearyl bidentate phosphine ligand has a rigid skeleton structure of a rigid ligand and the flexibility of a flexible ligand, so the aryl bidentate phosphine ligand has proper flexibility due to the characteristic that the aryl bidentate phosphine ligand is soft and rigid, and a most favorable coordination mode and a stable active structure in space are favorably formed. In addition, the aryl bidentate phosphine ligand has the advantages of high stability, simple and convenient synthesis method and the like; and a novel industrial technology is provided for production of organic carboxylate compounds.

A reactor for conducting catalytic chemical reactions has been developed. T he reactor has a well having an open end and a closed end. The reactor also has a sleeve having a top end and a bottom end. The bottom end of the sleeve is inserted within the open end of the well. A fluid permeable structure is attached to the sleeve spanning the cross-section thereby defining a chamber between the closed end of the well and the fluid permeable structure. The reactor also has a reactor insert having a fluid permeable end and a top end containing a first and a second fluid conduit. The fluid permeable end of the reactor is inserted within the open end of the sleeve. The first fluid conduit is in fluid communication with the chamber, and the second fluid conduit is in fluid communication with the fluid permeable end of the reactor insert.

The invention discloses a catalytic heating coupled methanol hydrogen production process, which belongs to the field of hydrogen production, and specifically relates to the technical field of methanol hydrogen production, in order to solve the problem that the existing methanol hydrogen production process requires external heating to start, additional equipment is required, and energy consumption is high. It covers a large area, including a catalytic oxidation reactor and a methanol hydrogen production system. In the catalytic oxidation reactor, methanol and air in the raw material are oxidized at a temperature above 10°C, and the catalyst layer is oxidized at normal temperature, and the catalytic oxidation reaction occurs. The generated heat provides thermal energy for the start-up of the methanol hydrogen production system. Under the condition of no heat source, the raw material methanol and air undergo a catalytic oxidation reaction in the catalytic oxidation reactor under the action of the combined catalyst layer, and the heat generated provides heat energy for the start-up of the methanol hydrogen production system, making the entire methanol hydrogen production process run at room temperature It starts from the bottom, does not require external heating to start, and does not require additional external heat source equipment. The equipment occupies a small area and consumes low energy.

The invention relates to a method for producing a combined catalyst and solvent oil, the combined catalyst includes a first catalyst and a second catalyst, the first catalyst contains a ten-membered ring molecular sieve M1, and the second catalyst contains a twelve-membered ring Molecular sieve M2, the first catalyst and the second catalyst each independently contain active metal components Pt and W; the first catalyst also contains or does not contain twelve-membered ring molecular sieve M3; wherein, the ten-membered ring molecular sieve M1 One or more of the 12-membered ring molecular sieve M2 and the 12-membered ring molecular sieve M3 has the following characteristics: the silicon oxide / alumina molar ratio is 120-300; it contains a mesoporous structure and has a low-temperature nitrogen adsorption-desorption curve P A closed hysteresis loop appears at / P0=0.4-0.99, and the initial position of the closed hysteresis loop is at P / P0=0.4-0.7. By adopting the method of the invention to produce solvent oil, better isomerization effect can be obtained, and the yield is high.