Selective hydrogenation of 2-pentenal using highly dispersed Pt catalysts supported on ZnSnAl mixed metal oxides derived from layered double hydroxides

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Selective hydrogenation of 2-pentenal using highly dispersed Pt catalysts supported on ZnSnAl mixed metal oxides derived from layered double hydroxides

机译：选择性加氢2-pentenal使用高度分散Pt催化剂支持ZnSnAl喜忧参半金属氧化物来自分层的两倍氢氧化物

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A highly dispersed Pt catalyst supported on ZnSnAl mixed metal oxides (MMO), with Pt in single-atom and small nanoclusters, was produced by the induction of lattice-confined Sn sites in layered double hydroxides (LDHs) and used in the selective hydrogenation of 2-pentenal. Compared with the Pt/Al2O3, Pt-SnOx/Al2O3 and MgSnAl-MMO supported Pt catalysts, the optimized ZnSnAl-MMO supported Pt catalyst gave a higher selectivity to 2-pentenol (82.2%) at 28.5% conversion of 2-pentenal. Based on catalytic evaluation results and catalyst characterization with XRD, Pyridine-IR, H-2-TPR, XPS, and HAADF-STEM, it was found that the combined effects of Sn and Zn species promoted the performance of the Pt catalyst by favoring the activation of the C & xe001;O bond. In addition, due to the size effect and electronic effect on the Pt species, the highly dispersed Pt induced by the lattice-confined Sn sites in ZnSnAl-LDH enhanced the catalytic activity of Pt/Zn(1Sn)(Al)O/Al2O3 by 2.7 times compared with Pt-SnOx/Zn(Al)O/Al2O3.

机译：一个高度分散的Pt ZnSnAl催化剂支持混合金属氧化物(MMO),在单原子与Pt和小束,是产生的在分层的感应lattice-confined Sn网站双氢氧化物(类)和使用的选择性加氢2-pentenal。与Pt /氧化铝,Pt-SnOx /氧化铝和MgSnAl-MMOPt催化剂,优化ZnSnAl-MMO的支持支持为泰党给了高选择性催化剂在28.5%的转换2-pentenol (82.2%)2-pentenal。和催化剂与XRD表征,Pyridine-IR H-2-TPR, XPS, HAADF-STEM发现,锡和锌的联合效应物种提升Pt的性能有利于激活催化剂的C &xe001; O键。和电子影响Pt物种,高度分散的Pt引发的lattice-confined Sn网站ZnSnAl-LDH增强催化活性的Pt /锌(1 sn) (Al) O /氧化铝的2.7倍,相比之下,Pt-SnOx /锌(铝)O /氧化铝。

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《Catalysis science & technology》 |2020年第4期|1106-1116|共11页
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正文语种英语
中图分类汉语教学;
关键词
2-pentenal; mix-metal; CatalystsplatinumLayered double hydroxidesHydrogenationSize effectoxides;

机译：2-pentenal;mix-metal CatalystsplatinumLayered双hydroxidesHydrogenationSize effectoxides;

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Selective hydrogenation of 2-pentenal using highly dispersed Pt catalysts supported on ZnSnAl mixed metal oxides derived from layered double hydroxides

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