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Incorporation of Functional Groups in Porphyrinic Metal‐Organic Frameworks by Post‐modification for Highly Efficient Oxidation Catalysis
Author(s) -
Ji Jinhua,
Liu Fan,
Yang Weijun,
Tan Mingyang,
Luo Weiping,
Yin ShuangFeng
Publication year - 2020
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.202000295
Subject(s) - cyclohexane , cyclohexanone , catalysis , cyclohexanol , chemistry , metal organic framework , trifluoromethyl , selectivity , metal , polymer chemistry , inorganic chemistry , organic chemistry , adsorption , alkyl
Under kinetic guidance, the stable metal‐organic framework PCN‐224 was synthesized and used as the parent MOF to embed Mn 3+ to form PCN‐224(Mn). A molecule with two‐linked carboxyl groups and fluorine‐containing groups, which named 2,2′‐bis(trifluoromethyl)‐4,4′‐diphenyl phthalate (H 2 L), was also designed and synthesized. The PCN‐224(Mn) was then modified by introducing the H 2 L into its structure, forming a new hydrophobic porphyrinic MOF of PCN‐224(Mn)‐H 2 L. The catalytic oxidation performance of PCN‐224(Mn)‐H 2 L to cyclohexane was investigated. It was found that the hydrophobicity and stability of PCN‐224(Mn)‐H 2 L was improved markedly, and it had excellent catalytic performance with a selectivity to KA (mixture of cyclohexanone and cyclohexanol) of 90 %, a cyclohexane conversion rate of 51.3 % under mild reaction conditions, which far superior to that of PCN‐224(Mn) and the homogeneous metalloporphyrin catalysts. The catalyst remained stable after several repeated experiments.