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1. (WO2018006433) RECOVERY OF PALLADIUM FROM CATALYST MATERIALS

Pub. No.:    WO/2018/006433    International Application No.:    PCT/CN2016/089495
Publication Date: Fri Jan 12 00:59:59 CET 2018 International Filing Date: Sat Jul 09 01:59:59 CEST 2016
IPC: C22B 7/00
C22B 11/00
Applicants: ENTEGRIS, INC.
Inventors: CHEN, Biqin
YANG, Zhenqiang
SONG, Yuxin
JIA, Jun
JIANG, Ping
KORZENSKI, Michael B.
Title: RECOVERY OF PALLADIUM FROM CATALYST MATERIALS
Abstract:
Disclosed is a process for recycling palladium-containing catalyst materials, wherein the process comprises: (a) grinding the palladium-containing catalyst in a milling module; (b) removing palladium from the palladium-containing catalyst using a removal composition; (c) optionally (i) separating the palladium-containing catalyst from the first removal composition using liquid-solid separation means subsequent to palladium removal to yield a solid and a liquid, and (ii) rinsing the solid with a first rinse subsequent to separation. The process can efficiently recover palladium from the catalyst materials while minimizing the amount of chemicals and other resources used.