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A Novel Magnetic Solid Acid for Specially Cleaving the C‐O Bridged Bond in Dibenzyl Ether
Author(s) -
Guan Yinshuang,
Zhao Wei,
Zhao Chen,
Wang Dingkai,
Ao Lei,
Liu Kaishuai,
Liu Haomiao,
Chen Shanglong,
Fan Xing,
Wei Xianyong
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201802339
Subject(s) - chemistry , catalysis , heterolysis , ether , crystallography , transmission electron microscopy , hydrogen bond , materials science , organic chemistry , nanotechnology , molecule
A novel magnetic solid acid was prepared by immobilizing trifluoromethanesulfonic acid (TFMSA) and AlCl 3 on a magnetic support (i. e., Fe 3 O 4 coated by SiO 2 ). Dibenzyl ether (DBE) which contains C−O bridged‐bond was used as a coal model compound to evaluate the activity of the catalyst for cleaving C alk ‐O bonds in coal. The prepared magnetic solid acid was characterized by X‐ray diffraction, transmission electron microscopy, Fourier transform infrared spectrometer, scanning electron microscopy and energy dispersive spectrometer, and NH 3 ‐temperature‐programmed desorption. The results show that the prepared catalyst possesses nanometer size, core‐shell structure and strong acidity. The C alk ‐O bond in DBE can be cleaved at a temperature of as low as 413 K over the catalyst AlCl 3 ‐TFMSA/Fe 3 O 4 /SiO 2 . The attack of H + that generated from the magnetic solid acid and/or via hydrogen heterolysis on oxygen atom of DBE could be a crucial step for DBE hydrocracking over the magnetic solid acid.