Pd基双金属催化剂对2,4-D的液相催化加氢脱氯

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Abstract

Supported bimetallic catalysts Pd-M/CeO₂(M=Fe, Co, Cu) were prepared by the impregnation method and the liquid phase catalytic hydrodechlorination (HDC) of 2,4-dichlorophenoxyacetic acid (2,4-D) was investigated over these catalysts. The catalysts were characterized by inductive coupled plasma optical emission, scanning electron microscope, X-ray photoelectron spectrometer and CO chemisorption. The results showed that cerium oxide could effectively disperse metal particles, and the synergy between metals improved catalytic performance. The Pd-Fe bimetallic catalyst has a relatively excellent catalytic effect. The catalytic activity of Pd-Fe/CeO₂ increased first and then decreased with the increase of Fe loading. In addition, the dechlorination of 2,4-D were proceeded via both the stepwise and concerted pathways.

Key words： 2,4-dichlorophenoxyacetic acid hydrodechlorination bimetal Pd-Fe/CeO₂

Received: 04 April 2019

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X505

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	Articles by authors
	ZHOU Xin
	LUO Hao-peng
	WANG Wei
	CHEN Quan-yuan
	ZHOU Juan

Cite this article:

ZHOU Xin,LUO Hao-peng,WANG Wei等. Liquid phase catalytic hydrodechlorination of 2, 4-dichlorophenoxyacetic acid over Pd-M(M=Fe, Co, Cu) bimetallic catalysts[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(10): 4337-4342.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I10/4337

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