Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1985-07-08
1987-04-21
Konopka, P. E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
260546, 260549, 423 22, 502 28, 502 31, 502 33, B01J 3868, B01J 3140, C07C 5156
Patent
active
046596828
ABSTRACT:
Heavy residues produced by noble metal catalyzed carbonylation reactions and containing Group VIII noble metals, particularly rhodium, are treated with reagents to precipitate solids containing substantially all of the noble metal contained in the residues. The solids may be further treated to concentrate the noble metals or they may be returned directly for reuse in the carbonylation reaction. Suitable reagents include aliphatic alcohols, carboxylic acids, and carboxylic acid esters. Preferred are branched-chain alcohols, especially tertiary alcohols; of the acids, acetic acid is particularly preferred; and of the esters, n-butyl acetate and ethylidene diacetate are preferred. Subsequent treatments with other solvents, e.g., alkanes, cycloalkanes, ethers, and aromatic compounds, may be used to further concentrate the rhodium content of the precipitated solids.
REFERENCES:
patent: 3887489 (1975-06-01), Fannin et al.
patent: 4131640 (1978-12-01), von Kutepow et al.
patent: 4340569 (1982-07-01), Davidson et al.
patent: 4340570 (1982-07-01), Davidson et al.
patent: 4341741 (1982-07-01), Davidson et al.
patent: 4363765 (1982-12-01), Fiato et al.
patent: 4388217 (1983-06-01), Hembre et al.
patent: 4434240 (1984-02-01), Pugach
patent: 4440570 (1984-04-01), Erpenbach et al.
patent: 4442304 (1984-04-01), Erpenbach et al.
patent: 4473655 (1984-09-01), Tsuhuda
patent: 4476237 (1984-10-01), Porcelli
patent: 4476238 (1984-10-01), Palmer et al.
patent: 4578368 (1986-03-01), Zoeller
Konopka P. E.
The Halcon SD Group, Inc.
Wells Harold N.
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