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Production of isophthalic acid from M‐Xylene catalyzed by Co(II) and HPW@C modified with ZnCl 2 solution
Author(s) -
Wang Zhihao,
Liu Huajie,
Fang Zhouwen,
Zhou Xinzhi,
Long Xiangli
Publication year - 2019
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23445
Subject(s) - phosphotungstic acid , isophthalic acid , catalysis , carbonization , carbon fibers , chemistry , activated carbon , xylene , nuclear chemistry , inorganic chemistry , organic chemistry , materials science , terephthalic acid , adsorption , benzene , composite number , polyester , composite material
The production of isophthalic acid (IPA) from the oxidation of m‐xylene (MX) with air can be sped up by Co(II) and phosphotungstic acid (HPW) loaded on activated carbon. In this paper, activated carbon is modified with a ZnCl 2 solution to improve the catalytic performance of the HPW@C catalyst. The experiments indicate that the optimum modification condition is the carbon immersed in a 0.10 mol L −1 ZnCl 2 solution for 6 h at the temperature of 40 °C followed by being carbonized at 600 °C for 4 h. The characterization proves that the ZnCl 2 modification leads to the increase of surface area and acidic groups on the activated carbon. The MX conversion catalyzed by the HPW@C prepared from the carbon modified is 7.0 % over that by the HPW@C from the original carbon and the IPA produced by the modified sample is 78.9 % over that produced by the original one.