双功能
催化作用
氢溢流
丁烷
异构化
化学
异丁烷
双功能催化剂
选择性
烷烃
无机化学
有机化学
作者
Pengzhao Wang,Tucheng Zeng,Wenjun Yao,Yaowei Wang,Deming Zhao,Minxiu Zhang,Chunyi Li,Tinghai Wang,Xiaojun Bao
标识
DOI:10.1016/j.mcat.2023.113348
摘要
The understanding of reaction mechanism is the key to develop the highly efficient catalyst. The introduction of Pt on SO42−/ZrO2 surface greatly improves its catalytic stability in n-butane hydroisomerization, but the function of Pt is still in controversy. The introduction of Pt on sulfated zirconia surface only promotes the hydrogenation of coke precursor and slows catalyst deactivation during n-butane hydroisomerization, but has no effect on the initial conversion rate of n-butane and selectivity to isobutane. H2-TPR and H2-TPD investigations reveal that Pt functions via hydrogen spillover mechanism, rather than classical bifunctional “metal-acid” catalysis mechanism. Our findings provide a new perspective for the rational design and synthesis of “metal-acid” bifunctional catalysts for alkane isomerization.
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