Influence of oxide support to the Ni-V catalysts in the catalytic oxidation of dichloromethane
HUANG Hai-feng1, ZHANG Xi-xiong1, DOU Kang1, JIANG Xiao-jia1, LU Han-feng2
1. Environmental College, Zhejiang University of Technology, Hangzhou 310014, China;
2. Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
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.
黄海凤, 张细雄, 豆闶, 蒋孝佳, 卢晗锋. 氧化物载体对Ni-V催化剂催化燃烧二氯甲烷的影响[J]. 中国环境科学, 2016, 36(11): 3273-3279.
HUANG Hai-feng, ZHANG Xi-xiong, DOU Kang, JIANG Xiao-jia, LU Han-feng. Influence of oxide support to the Ni-V catalysts in the catalytic oxidation of dichloromethane. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(11): 3273-3279.
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