Catalytic oxidation of methacrolein to methacrylic acid over silica-supported 11-molybdo-1-vanadophosphoric acid with different heteropolyacid loadings

Kanno, Mitsuru; Yasukawa, Toshiya; Ninomiya, Wataru; Ooyachi, Ken; Kamiya, Yuichi

Catalytic oxidation of methacrolein to methacrylic acid over silica-supported 11-molybdo-1-vanadophosphoric acid with different heteropolyacid loadings

Kanno, Mitsuru; Yasukawa, Toshiya; Ninomiya, Wataru et al.

Journal of Catalysis, 2010, 273(1), 1-8

Permalink : https://hdl.handle.net/2115/43322

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アクセス権	open access
URI	https://hdl.handle.net/2115/43322
タイトル	Catalytic oxidation of methacrolein to methacrylic acid over silica-supported 11-molybdo-1-vanadophosphoric acid with different heteropolyacid loadings
著者	Kanno, Mitsuru ; Yasukawa, Toshiya ; Ninomiya, Wataru ; Ooyachi, Ken ; Kamiya, Yuichi
著者名 Kanno, Mitsuru
著者名 Yasukawa, Toshiya
著者名 Ninomiya, Wataru
著者名 Ooyachi, Ken
著者名 Kamiya, Yuichi
言語	英語
キーワード	Supported heteropolyacids
	Methacrolein oxidation
	Methacrylic acid
	Temperature-programmed desorption
発行日	2010-07-07
出版者	Elsevier
収録物名	Journal of Catalysis
巻(号)	273(1)
ページ	1-8
抄録	Catalytic oxidation of methacrolein (MAL) to methacrylic acid (MAA) over SiO2-supported H4PMo11VO40 with different H4PMo11VO40 loadings was investigated. H4PMo11VO40/SiO2 showed high activity in comparison with unsupported H4PMo11VO40, and 3.3 mol% H4PMo11VO40/SiO2 (50 wt% H4PMo11VO40) had the highest activity, which was five-times larger than that of unsupported H4PMo11VO40 due to high dispersion of H4PMo11VO40 on SiO2, as determined by temperature-programmed desorption of benzonitrile. On the other hand, the supported catalysts were less selective towards the formation of MAA. From X-ray diffraction and Raman spectroscopy, it was determined that H4PMo11VO40 decomposed to form MoO3 on SiO2 during the catalytic reaction. Since SiO2-supported MoO3 and unsupported MoO3 had only very low selectivity toward the formation of MAA in the oxidation of MAL, it was concluded that the formation of MoO3 caused the decrease in the catalytic performance of the supported catalysts.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0021-9517
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.jcat.2010.04.014