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 Brønsted acid sites decreased in the presence of nickel, as analyzed by pyridine IR spectroscopy. H₂ 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.

制备了钯镍掺杂的硫酸氧化锆，并使用该模型催化剂证实了氢的溢出和双金属的协同作用。异构化ñ正己烷表示，钯，镍能同时提高转化率和选择性。XRD和BET结果表明，镍对晶形和催化剂结构有很大的影响。TG-DSC分析表明，负载的镍可以降低硫酸盐的浓度。因此，通过吡啶红外光谱分析，在镍存在下，总酸度，特别是强布朗斯台德酸位降低。高₂TPR分析表明，镍和钯均可提高硫酸化氧化锆的还原性。结合XPS结果，发现在钯存在下氧化镍更易于还原，而较高的还原温度可能导致NiAl ₂ O ₄的形成。最后，推导了氢的溢出机理和反应过程。