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Influence of the Anion on the Oxidation of 5‐Hydroxymethylfurfural by Using Ionic‐Polymer‐Supported Platinum Nanoparticle Catalysts
Author(s) -
Siankevich Sviatlana,
Mozzettini Simone,
Bobbink Felix,
Ding Shipeng,
Fei Zhaofu,
Yan Ning,
Dyson Paul J.
Publication year - 2018
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201700344
Subject(s) - chemistry , catalysis , ionic liquid , platinum , imide , platinum nanoparticles , cationic polymerization , nanoparticle , chloride , polymer , substrate (aquarium) , inorganic chemistry , polymer chemistry , organic chemistry , chemical engineering , oceanography , engineering , geology
Platinum nanoparticles stabilized by an imidazolium‐based cross‐linked polymer (with chloride as the counteranion) efficiently catalyzed the oxidation of 5‐hydroxymethylfurfural to form 2,5‐furandicarboxylic acid in water under mild conditions with oxygen as the oxidant. This catalyst system is explored herein by varying the counteranion, that is, replacing chloride by BF 4 − , PF 6 − , bis(trifluoromethylsulfonyl)imide, hexanoate, or laurate anions, in the cationic polymer. The counteranion influences the structure of the obtained platinum nanoparticles, the surface electronic properties, and their catalytic activity. The highest reaction rates were obtained with the weakly nucleophilic bis(trifluoromethylsulfonyl)imide anion, which also favored platinum in the zero oxidation state, leading to complete conversion of the substrate and a high yield of 2,5‐furandicarboxylic acid under mild conditions.