Shaped hydrogenation catalyst and processes for their preparation and use
AssigneeEngelhard Corporation
InventorsBrian D. Roberts, William J. Carrick, Deepak S. Thakur
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Abstract
Shaped catalyst compositions are disclosed comprising (i) at least one metal selected from the group consisting of copper, manganese, zinc, nickel, cobalt and iron, (ii) calcium silicate and (iii) at least one clay material. Also disclosed are a process for preparing the foregoing shaped compositions and a process for hydrogenating aldehydes, ketone, carboxylic acids, carboxylic acid esters and nitro aroniate compounds using these shaped catalysts.
Claims27
A shaped catalyst composition comprising a uniform mixture of (i) at least one metal selected from the group consisting of copper, nickel, manganese, zinc, and cobalt;
- (ii) calcium silicate;
- and (iii) at least one clay material, wherein said composition is prepared by a process which comprises:
- (A) preparing a paste comprising (i) at least one metal oxide wherein said metal is selected from the group consisting of copper, manganese, zinc, nickel, and cobalt;
- (ii) at least one solvent;
- (iii) calcium silicate;
- and (iv) at least one clay material;
- (B) forming a shaped particle from said paste;
- and
- (C) drying and calcining said shaped particle.
An extruded catalyst composition comprising a uniform mixture of (i) at least one metal oxide of copper, manganese or mixtures thereof;
- (ii) calcium silicate formed in situ by contacting, prior to the extrusion, calcium hydroxide and a stabilized silica sol;
- and (iii) at least one clay material;
- wherein said composition has a total copper content of from about 35 up to about 65% by weight;
- a calcium content of from about 2.5 up to about 18% by weight, a silicon content of from about 10 up to about 20% by weight, a surface area of from about 10 up to about 100 m.sup.2 /g., and a packed bulk density of from about 0.6 up to about 1.1 cc/g.
A process for preparing a shaped catalyst which comprises:
- (A) preparing a paste comprising a uniform mixture of (i) at least one metal oxide wherein said metal is selected from the group consisting of copper, manganese, zinc, nickel, and cobalt;
- (ii) at least one solvent;
- (iii) calcium silicate;
- and (iv) at least one clay material;
- (B) forming a shaped particle from said paste;
- and
- (C) drying and calcining said shaped particle.
A process for preparing a shaped catalyst which comprises:
- (A) preparing a paste comprising a uniform mixture of (i) at least one iron oxide;
- (ii) at least one solvent;
- (iii) calcium silicate;
- and (iv) at least one clay material;
- (B) forming a shaped particle from said paste;
- and
- (C) drying and calcining said shaped particle, wherein said paste is free of chromium and added alumina and said paste has an atomic ratio of said iron to calcium to silicon is 2.5 to 6.0:
- 0.6 to 1.4:
- 0.6 to 1.4.
Dependencies are inferred from the claim text.