氧化物载体对Ni-V催化剂催化燃烧二氯甲烷的影响

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Abstract

Ni-V/M(M= Al₂O₃、TiO₂、ZrO₂) catalyst were prepared by sol-gel method, and the effects of different acidic materials on the catalytic performance for DCM destruction were evaluated. The physical-chemical properties of the catalysts were characterized by XRD, BET, FTIR-Pyridine and H₂-TPR. It was found that activity for catalytic combustion of DCM was related to the synergy between acidic role and oxidation. 10%Ni-V/Al₂O₃ and 10%Ni-V/TiO₂ catalysts that possess larger surface acidity and strong oxidizing ability exhibit preferable catalytic activity. Especially the former catalyst, whose T₉₀(temperature when 90% DCM conversion was obtained) at only 252℃, but a certain amount of CH₃Cl was detected at low temperature. And obvious decrease in the catalyst performance was seen during the 50h stability test. 10%Ni-V/TiO₂ catalyst exhibit a good activity that the T₉₀ was 274℃, no CH₃Cl was detected in the DCM destruction as well as any obvious decrease was seen during the stability test, this may owning to the larger moderate strong acidic sites and strong oxidizing ability of the catalyst.

Key words： oxide support Ni-V metal oxides acid sites catalytic oxidation

Received: 20 March 2016

PACS:

X511

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	Articles by authors
	HUANG Hai-feng
	ZHANG Xi-xiong
	DOU Kang
	JIANG Xiao-jia
	LU Han-feng

Cite this article:

HUANG Hai-feng,ZHANG Xi-xiong,DOU Kang等. Influence of oxide support to the Ni-V catalysts in the catalytic oxidation of dichloromethane[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(11): 3273-3279.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2016/V36/I11/3273

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