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Pseudo‐single‐atom Platinum Induced by the Promoter Confined in Brucite‐like Lattice for Catalytic Reforming
Author(s) -
Ma Xiaodan,
An Zhe,
Zhu Yanru,
Wang Wenlong,
He Jing
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201501239
Subject(s) - catalysis , brucite , selectivity , platinum , atom (system on chip) , metal , materials science , lattice (music) , hexane , inorganic chemistry , chemistry , chemical engineering , crystallography , organic chemistry , metallurgy , physics , computer science , acoustics , engineering , magnesium , embedded system
Pseudo‐single atom Pt catalysts have achieved an excellent selectivity to branched paraffins and cycloalkanes in n ‐hexane reforming here. Highly dispersed platinum in single‐atom and small clusters made up of several separated atoms was produced under the inducement of Sn or Zr as promoting components. The Sn or Zr oxides were topologically transformed from layered double hydroxides as precursors, and thus homogeneously dispersed owing to the confinement of the brucite‐like lattices. The lattice confinement also caused the promoter sites charge‐transferred, affording electron‐rich (Sn) or electron‐defected (Zr) sites on the surface, thereby facilitating the inducement to Pt sites. This strategy provides an effective and feasible alternative for the facile preparation of highly dispersed metal catalysts. In n ‐hexane reforming, a selectivity of up to 95 % to branched paraffins and cycloalkanes was obtained with the pseudo‐single‐atom Pt catalysts.