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Petroleum Science and Technology Volume 29, 2011 - Issue 4
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Original Articles

The Effect of Pd Precursors on the Catalytic Activity of a Pd/Al2O3 Catalyst for Cumene Hydroperoxide Hydrogenation

Q.-C. Zhu Petroleum Processing Research Center, East China University of Science and Technology, Shanghai, P. R. China
,
B.-X. Shen Petroleum Processing Research Center, East China University of Science and Technology, Shanghai, P. R. China
,
H. Ling Petroleum Processing Research Center, East China University of Science and Technology, Shanghai, P. R. China
&
R. Gu Shanghai Gaoqiao Company, SINOPEC, Shanghai, P. R. China
Pages 428-434 | Received 14 Sep 2009, Accepted 07 Oct 2009, Published online: 18 May 2011
 
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Abstract

Abstract Pd/Al2O3 catalysts were prepared by wet impregnation using K2PdCl4, (NH4)2PdCl4, and Pd(NO3)2 as precursors. All catalysts were characterized by means of inductively coupled plasma-atomic emission spectroscopy (ICP-AES), temperature-programmed reduction (TPR), X-ray diffraction (XRD), and CO chemisorption. The results obtained in the hydrogenation of cumene hydroperoxide (CHP) to α-cumyl alcohol (CA) showed that Pd/Al2O3 catalyst prepared from Pd(NO3)2 exhibited the highest turnover frequency (TOF) value and the greatest deactivation extent, whereas Pd/Al2O3 catalyst prepared from (NH4)2PdCl4 displayed the lowest TOF value but the best stability.

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