Rhodium from hydroformylation still heels

Details Rhodium from hydroformylation still heels Rhodium from hydroformylation still heels

1975-12-23

1976-12-21

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 5A, B22F 900, C22B 3400

Patent

active

039986225

ABSTRACT:
A process for preparing a high surface area zero valent rhodium in the form of small, hollow, porous agglomerates of rhodium particles by adjusting the pH of still heels from the hydroformylation reaction of unsaturated hydrocarbons with a base until a pH of from about 3 to 8 is attained, heating the still heel in the presence of water to a temperature of about 115.degree. to 175.degree. C until the rhodium separates, the ratio of water to still heel being from about 0.1:1 to 1:1 and recovering the rhodium in the form of small, hollow, porous agglomerates of rhodium particles.

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