当前位置: X-MOL 学术Nanoscale › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Pairwise semi-hydrogenation of alkyne to cis-alkene on platinum-tin intermetallic compounds
Nanoscale ( IF 6.7 ) Pub Date : 2020/03/25 , DOI: 10.1039/d0nr00920b
Yuchen Pei 1, 2, 3, 4 , Minda Chen 1, 2, 3, 4 , Xiaoliang Zhong 5, 6, 7 , Tommy Yunpu Zhao 1, 4, 8, 9 , Maria-Jose Ferrer 1, 4, 8, 9 , Raghu V. Maligal-Ganesh 1, 2, 3, 4 , Tao Ma 3, 4, 10, 11 , Biying Zhang 1, 2, 3, 4 , Zhiyuan Qi 1, 2, 3, 4 , Lin Zhou 3, 4, 10, 11 , Clifford R. Bowers 1, 4, 8, 9 , Cong Liu 4, 12, 13, 14 , Wenyu Huang 1, 2, 3, 4, 10
Affiliation  

The molecular basis for the high cis-alkene selectivity over intermetallic PtSn for alkyne semi-hydrogenation is demonstrated. Unlike the universal assumption that the bimetallic surface is saturated with atomic hydrogen, molecular hydrogen has a higher barrier for dissociative adsorption on intermetallic PtSn due to the deficiency of Pt three-fold sites. The resulting molecular behavior of adsorbed hydrogen on intermetallic PtSn nanoparticles leads to pairwise-hydrogenation of three alkynes to the corresponding cis-alkenes, satisfying both high stereoselectivity and high chemoselectivity.

中文翻译:

铂-锡金属间化合物上炔烃成对半氢化成顺式烯烃

证明了对于炔烃半氢化而言,相对于金属间化合物PtSn具有高顺式-烯烃选择性的分子基础。不同于普遍的假设,即双金属表面被原子氢饱和,分子氢由于Pt三折位的缺乏而对金属间PtSn的解离吸附具有更高的势垒。在金属间化合物PtSn纳米颗粒上吸附氢的分子行为导致三个炔烃成对氢化为相应的顺式烯烃,同时满足高立体选择性和高化学选择性。
更新日期:2020-04-17
down
wechat
bug