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Reaction between methanol and acetic acid catalyzed by SiO 2 ‐supported V‐P‐O catalyst in oxygen atmosphere
Author(s) -
Shen Lingqin,
Yu Zhongyong,
Wang Aili,
Yin Hengbo
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.23571
Subject(s) - catalysis , methanol , chemistry , formaldehyde , acetic acid , inorganic chemistry , aldol condensation , incipient wetness impregnation , nuclear chemistry , acrylic acid , phosphoric acid , selectivity , organic chemistry , polymer , monomer
SiO 2 ‐supported V‐P‐O catalysts prepared by the incipient‐wetness impregnation method beginning with ammonium metavanadate and phosphoric acid were used in the catalytic reaction between methanol and acetic acid in an oxygen atmosphere. The SiO 2 ‐supported V‐P‐O catalysts were composed of VOPO 4 and (VO) 2 P 2 O 7 phases. Both the acidic and alkaline sites were co‐present in the catalysts. The vanadium species catalyzed the oxidation of methanol to formaldehyde. The V‐P‐O(20–30 wt%)/SiO 2 catalysts with a P/V mole ratio of 2:1 exhibited higher catalytic activity for the formation of acrylic acid and methyl acrylate with a total selectivity of ∼28 % at 380 °C. The acid sites of the catalysts also catalyzed the formation of methyl acetate with a selectivity of ∼65 %. Methanol can be an alternative to formaldehyde for the synthesis of both acrylic acid and methyl acrylate through the aldol condensation reaction.