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
1981-11-16
1984-02-28
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 25, 502 29, B01J 3140, B01J 2396, C07C 5110, C01G 5500
Patent
active
044342403
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 recover the noble metals or they may be returned directly for reuse in the carbonylation reaction. Suitable reagents include alkali metal hydroxides, alkali metal peroxides, alkali metal borohydrides, and other reducing agents, such as formaldehyde and acidified sodium bisulfite.
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Konopka P. E.
Long William C.
Stewart Riggs T.
The Halcon SD Group, Inc.
Wells Harold N.
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