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Citation: QIN Gaofei, ZHOU Ying, LUO Qin, JIANG Wenwei, WANG Jide, YANG Qin. Process and Application of Recovering Platinum from Used Liquid-phase Catalysts by Solvent Extraction with Thiourea[J]. Chinese Journal of Applied Chemistry, ;2011, 28(11): 1337-1339. doi: 10.3724/SP.J.1095.2011.00693 shu

Process and Application of Recovering Platinum from Used Liquid-phase Catalysts by Solvent Extraction with Thiourea

QIN Gaofei ^a,b ,
ZHOU Ying ^a ,
LUO Qin ^c ,
JIANG Wenwei ^a,, ,
WANG Jide ^b ,
YANG Qin ^c

1.
a School of Chemistry and Chemical Engineering, Sichuan University, Chendu 610200;
2.
b School of Chemical Engineering, Xinjiang University, Urumqi;
3.
c Chengdu Hui′en Fine Chemical Co., Ltd., Chengdu

Corresponding author: JIANG Wenwei,
Received Date: 22 November 2010
Available Online: 28 January 2011

The Pt ion was extracted in the deactived catalyst for the hydrochlorination reaction of ethyne by acidic thiourea solution. The result shows that the extraction ratio is over 98% when the extraction phase volume ratio approaches 1, the concentration of thiourea is 0.2 mol/L and hydrochloric acid concentration is between 0.5 and 0.6 mol/L. Besides, there are some advantages such as keeping the organic phase composition. Organic phase can be reuses, and the ethyne conversion ratio is over 70% by using the fresh catalyst in the same organic phase.
- acidic thiourea solution,
- liquid-phase catalysts,
- solvent extraction,
- platinum
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