中文摘要：

以Al2O3,TiO2,ZrO23种氧化物为载体,通过溶胶凝胶法制备以Ni-V双金属氧化物为活性组分催化剂,在固定床反应器上研究了催化剂的二氯甲烷(DCM)催化燃烧性能.并通过XRD、BET、FTIR-Pyridine和H2-TPR表征分析催化剂的物理化学特性,结果表明催化剂的氧化还原性能与酸性存在一定的协同能力促进DCM的催化氧化.10%Ni-V/Al2O3和10%Ni-V/TiO2催化剂表面大量的酸性位点和强氧化性使得催化剂在催化燃烧DCM时拥有较好的活性,其中10%Ni-V/Al2O3在252℃时就有90%的转化率,但其在低温时易产生含氯有机副产物的CH3Cl,并且50h连续稳定性测试发现其有失活现象.而10%Ni-V/TiO2催化剂达到90%转化率时温度为274℃,且其在DCM降解中并没有CH3Cl的产生,稳定性测试中也没有失活现象发生,这可能是与其拥有更多中强度B酸以及较强氧化还原能力有关.

英文摘要：

Ni-V/M(M= Al2O3、TiO2、ZrO2) catalyst were prepared by sol-gel method, and the effects of different acidicmaterials on the catalytic performance for DCM destruction were evaluated. The physical-chemical properties of thecatalysts were characterized by XRD, BET, FTIR-Pyridine and H2-TPR. It was found that activity for catalyticcombustion of DCM was related to the synergy between acidic role and oxidation. 10%Ni-V/Al2O3 and 10%Ni-V/TiO2catalysts that possess larger surface acidity and strong oxidizing ability exhibit preferable catalytic activity. Especially theformer catalyst, whose T90(temperature when 90% DCM conversion was obtained) at only 252℃, but a certain amount ofCH3Cl was detected at low temperature. And obvious decrease in the catalyst performance was seen during the 50hstability test. 10%Ni-V/TiO2 catalyst exhibit a good activity that the T90 was 274℃, no CH3Cl was detected in the DCMdestruction as well as any obvious decrease was seen during the stability test, this may owning to the larger moderatestrong acidic sites and strong oxidizing ability of the catalyst.