Ni hydrogenation catalysts, manufacture and use
AssigneeCatalytic Distillation Technologies
InventorsJ. Ryu, Hugh Putman
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Abstract
Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin streams. The catalysts are prepared by depositing nickel on a porous support which has the following specific physical properties; BET surface area of from 30 to about 100 m2/g, total nitrogen pore volume of from 0.4 to about 0.9 cc/g, and an average pore diameter of from about 110 to 450 Å with or without modifiers of one or more elements selected from the group consisting of Cu, Re, Pd, Zn, Mg, Mo, Ca and Bi.
Claims31
A selective hydrogenation catalyst comprising Ni only or Ni and one or more elements selected from the group consisting of Cu, Re, Pd, Zn, Mg, Mo, Ca and Bi deposited on a support having the following physical properties:
- BET surface area of from 30 to about 100 m2/g, total nitrogen pore volume of from 0.4 to about 0.9 cc/g, and an average pore diameter of from about 110 to 450 Å.
The process of preparing a selective hydrogenation catalyst comprising impregnating a support having the following physical properties:
- BET surface area of from 30 to about 100 m2/g, total nitrogen pore volume of from 0.4 to about 0.9 cc/g, and an average pore diameter of from about 110 to 450 Å with soluble salts of Ni only or Ni and one or more elements selected from the group consisting of Cu, Re, Pd, Zn, Mg, Mo, Ca and Bi from one or more solutions to form an impregnated support.
The method of selectively hydrogenating acetylenic compounds comprising contacting a feed containing acetylenic compounds and other unsaturated compounds with a catalyst comprising Ni only or Ni and one or more elements selected from the group consisting of Cu, Re, Pd, Zn, Mg, Mo, Ca and Bi deposited on a support having the following physical properties:
- BET surface area of from 30 to about 100 m2/g, total nitrogen pore volume of from 0.4 to about 0.9 cc/g, and an average pore diameter of from about 110 to 450 Å under selective hydrogenation conditions and recovering a product having less acetylenic compounds than said feed.
Dependencies are inferred from the claim text.