TY - JOUR
T1 - Bimetallic Pt-Sn nanocluster from the hydrogenolysis of a well-defined surface compound consisting of [([tbnd]AlO–)Pt(COD)Me] and [([tbnd]AlO–)SnPh3] fragments for propane dehydrogenation
AU - Xu, Zhikang
AU - Xu, Rui
AU - Yue, Yuanyuan
AU - Yuan, Pei
AU - Bao, Xiaojun
AU - Abou-Hamad, Edy
AU - Basset, Jean-Marie
AU - Zhu, Haibo
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Financial supports from the National Natural Science Foundation of China (Grant 21606048, 21878050) and 111 Project (Project No. D17005) are gratefully acknowledged. We also appreciate Sasol company for their kindly providing different kinds of AlO supports.
PY - 2019/5/27
Y1 - 2019/5/27
N2 - The bimetallic Pt-Sn catalysts are known to be the most efficient ones for propane dehydrogenation reaction; however, the synthesis of bimetallic Pt-Sn nanocluster (below 1 nm) with an alloy structure still remains a formidable challenge. An approach for the controllable synthesis of Pt-Sn nanocluster based on Surface Organometallic Chemistry on oxide concept is developed here, which involves two basic steps: the sequential grafting of Pt(COD)Me2 and HSnPh3 at the surface of dehydroxylated θ-Al2O leading to the formation of well-defined bimetallic surface compound consisting of [([tbnd]AlO–)Pt(COD)Me] and [([tbnd]AlO–)SnPh3] fragments, and the hydrogenolysis of this surface compound under a mild condition giving rise to the ultra-small bimetallic Pt-Sn cluster around 0.75 nm. The achieved Pt-Sn/θ-Al2O3 catalysts exhibit high activity, selectivity and stability in propane dehydrogenation to propylene.
AB - The bimetallic Pt-Sn catalysts are known to be the most efficient ones for propane dehydrogenation reaction; however, the synthesis of bimetallic Pt-Sn nanocluster (below 1 nm) with an alloy structure still remains a formidable challenge. An approach for the controllable synthesis of Pt-Sn nanocluster based on Surface Organometallic Chemistry on oxide concept is developed here, which involves two basic steps: the sequential grafting of Pt(COD)Me2 and HSnPh3 at the surface of dehydroxylated θ-Al2O leading to the formation of well-defined bimetallic surface compound consisting of [([tbnd]AlO–)Pt(COD)Me] and [([tbnd]AlO–)SnPh3] fragments, and the hydrogenolysis of this surface compound under a mild condition giving rise to the ultra-small bimetallic Pt-Sn cluster around 0.75 nm. The achieved Pt-Sn/θ-Al2O3 catalysts exhibit high activity, selectivity and stability in propane dehydrogenation to propylene.
UR - http://hdl.handle.net/10754/656393
UR - https://linkinghub.elsevier.com/retrieve/pii/S0021951719301976
UR - http://www.scopus.com/inward/record.url?scp=85066078446&partnerID=8YFLogxK
U2 - 10.1016/j.jcat.2019.04.035
DO - 10.1016/j.jcat.2019.04.035
M3 - Article
SN - 0021-9517
VL - 374
SP - 391
EP - 400
JO - Journal of Catalysis
JF - Journal of Catalysis
ER -