Influence of ceria promoter on shell-powder-supported Pd catalyst for the complete oxidation of benzene

Authors: Shufeng Zuo, Yijun Du, Fujian Liu, Dan Han, Chenze Qi

Abstract:
Pearl shells are the main waste of the pearl industry, which discards millions of tons of pearl shells each year in China. To date, the use of pearl shells in the complete oxidation of volatile organic compounds (VOCs) has not been reported. In this paper, shell powder (SP) was used as a carrier for ceria and Pd catalysts for the complete oxidation of benzene. The influence of the ceria promoter on the texture/structure and catalytic performance of Pd/SP was investigated. The results show that adding ceria into the SP support increased the BET surface area and total pore volume and decreased the sinterability of SP. The catalytic activity and H₂ temperature-programmed reduction (H₂-TPR) results show that adding ceria can greatly improve the oxidation properties of Pd/SP catalysts and enhance the catalytic activity for the complete oxidation of benzene. The improvement in the catalytic activity is mainly due to the optimization of the catalyst texture/structure and redox properties by the strong interaction of Pd and ceria and the addition of ceria.

Keywords:
Shell powder
Ceria
Pd
Benzene oxidation

Published in: Applied catalysis A: General  (Volume 451, Pages 1-288, 31 January 2013)

Publisher: Elsevier

ISSN Information: 0926-860X

Influence of ceria promoter on shell-powder-supported Pd catalyst for the complete oxidation of benzene

Bình luận của bạn

*

*

*

*

 Captcha

Gửi bình luận nhập lại