化学选择性
选择性
纳米团簇
肉桂醛
催化作用
铂金
化学
光化学
组合化学
有机化学
作者
Liang Yu,Qiong Tang,Lei Liu,Dingsheng Wang,Jinxiang Dong
标识
DOI:10.1016/j.apcatb.2023.122783
摘要
In this work, we first reported the fabrication of single-atom Pt catalysts with high oxidation state through a mild hydrolysis method using platinum acetylacetonate as the precursor and SBA-15 coated with functional FeOx nanoclusters as support, and evaluate their catalytic performance towards unsaturated aldehydes hydrogenation. Pt1-FeOx/SBA-15 featuring the high coordination number of Pt-O exhibited markedly high selectivity for hydrogenation of CO group (> 95 %) when cinnamaldehyde conversion is 100 %, and further hydrogenation of target product could be efficiently inhibited over a prolonged period of time, and the universality of chemoselectivity was also evidenced in other unsaturated aldehydes. The experimental results and theoretical calculations revealed that the synergism of highly electron-deficient Pt single-atoms and FeOx species is responsible for the selectivity control and the inhibition of further hydrogenation. The developed strategy offers a facile approach to the rational design of high-efficient single-atom catalysts for the selective hydrogenation with multiple intermediates.
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