Process for removal of the catalytic coating material from...

Details Process for removal of the catalytic coating material from... Process for removal of the catalytic coating material from...

2005-04-04

2010-06-22

Wyszomierski, George (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

Reexamination Certificate

active

07740685

ABSTRACT:
Process for recovering catalyst coating material from a supporting structure, such as, for example, a catalytic converter assembly having a metal mantle, including contacting the catalytic coating material with a sodium, potassium or ammonium hydroxide-containing compound at an elevated temperature; and rinsing with a liquid and filtering the solid catalyst coating material from the solution.

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patent: 05186840 (1993-07-01), None
CRC Handbook of Chemistry and Physics. 75thedition. 1988. p. D-146.
Suzuki, Masahito, “Technology on Recovery and Recycle of Catalyst for Motor Vehicles,” JETI, 46(5), pp. 56-58 (1998) and Examiner translation.
Mishra, Rajesh Kumar, “A Review of Platinum Group Metals Recovery from Automotive Catalytic Converters,” Precious Metals, pp. 449-474 (1993).
Kuo-Ying, et al., “Rhodium, Platinum and Palladium Recovery from New and Spent Automotive Catalysts,” Precious Metals, pp. 343-349 (1993).
Hoffmann, J.E., “Recovering Platinum-Group Metals from Auto Catalysts,” Journal of Metals, 40(6), pp. 40-44 (1988).

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