Selective Preparation of β- and α-Silicomolybdic Acid and Their Methanol Oxidative Behaviors

• Published in: Catalysis letters Vol. 143; no. 9; pp. 902 - 906
• Main Authors: Phuc, Nguyen Huu Huy, Ohkita, Hironobu, Mizushima, Takanori, Kakuta, Noriyoshi
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-09-2013; Springer; Springer Nature B.V
• Subjects: Analysis; Catalysis; Catalytic activity; Chemistry; Chemistry and Materials Science; Exact sciences and technology; Formaldehyde; General and physical chemistry; Industrial Chemistry/Chemical Engineering; Methanol; Molybdenum oxides; Molybdenum trioxide; Organometallic Chemistry; Oxidation; Physical Chemistry; Pretreatment; Raman spectroscopy; Silicon dioxide; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Methanol partial oxidation; Molybdic acid; Raman spectroscopy; Silicomolybdic acid; Heterogeneous catalysis; Acids; Preparation; Alkanol; Alcohol; Raman spectrometry; Partial oxidation; Methanol
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-013-0998-2

β-silicomolybdic acid (SMA)/SiO
2
was successfully prepared and its catalytic activity in methanol partial oxidation was studied. After catalytic study, β-SMA was transformed into two other types of α-MoO
3
that had different Raman relative peaks ratios upon the pre-treatment prior to the reaction. On the other hand, α-SMA/SiO
2
was also prepared for comparison. α-SMA was decomposed into surface oxomolybdates species which favored the formation of CO
x
while MoO
3
was formed from β-SMA and promoted HCHO formation.
Graphical Abstract
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