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Platinum‐Imidazolyl Schiff Base Complexes Immobilized in Periodic Mesoporous Organosilica Frameworks as Catalysts for Hydrosilylation
Author(s) -
Huo Yingpeng,
Hu Jiwen,
Tu Yuanyuan,
Huang Zhenzhu,
Lin Shudong,
Hu Yangfei,
Feng Chao
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5697
Subject(s) - hydrosilylation , chemistry , tetraethyl orthosilicate , mesoporous organosilica , triethoxysilane , catalysis , x ray photoelectron spectroscopy , ammonium bromide , schiff base , mesoporous material , polymer chemistry , mesoporous silica , nuclear chemistry , inorganic chemistry , organic chemistry , chemical engineering , pulmonary surfactant , biochemistry , engineering
An imidazolyl Schiff base‐containing periodic mesoporous organosilica (PMO) was synthesized via co‐condensation reactions between a newly prepared bis (imidazolyl)imine‐bridged bis silane and tetraethyl orthosilicate in the presence of cetyltrimethyl ammonium bromide as a soft template. The resultant as‐synthesized PMO was then employed as a solid support for platinum catalysts. This complex was fully characterized via various techniques including FTIR, solid‐state 13 C NMR, and 29 Si‐NMR spectroscopy, as well as N 2 adsorption/desorption analysis, X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) methods. In addition, the catalyst was proven to efficiently mediate hydrosilylation reactions between olefins and hydrosilanes, and it can be reused for at least five cycles without significant loss of activity.