文献类型：期刊文献

英文题名：Pd-Ni doped sulfated zirconia: Study of hydrogen spillover and isomerization of N-hexane

作者：Ma, Zhiming[1];Meng, Xuan[1];Liu, Naiwang[1];Shi, Li[1]

机构：[1]East China Univ Sci Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：449

起止页码：114

外文期刊名：MOLECULAR CATALYSIS

收录：;EI(收录号：20184606063932);WOS:【SCI-EXPANDED(收录号:WOS:000430769200015)】；

语种：英文

外文关键词：Sulfated zirconia; Hydrogen spillover; Nickel; Metal synergy effect

摘要：A palladium-nickel doped sulfated zirconia was prepared, and hydrogen spillover and bimetallic synergic effect were confirmed using this model catalyst. Isomerization of n-hexane indicated that palladium and nickel could enhance both the conversion rates and selectivity. The XRD and BET results showed that nickel had a strongly influence on the crystal form and catalyst structure. TG-DSC analysis showed the loaded nickel could decrease the sulfates concentrations. Therefore, the total acidity, especially the strong Bronsted acid sites decreased in the presence of nickel, as analyzed by pyridine IR spectroscopy. H-2 TPR analysis indicated both the nickel and palladium could improve the reducibility of sulfated zirconia. And combined with XPS results, the nickel oxide was found easier to reduce in the presence of palladium, and higher reduction temperature could lead to the formation of NiAl2O4. Finally, the mechanisms of hydrogen spillover and reaction process were deduced.