V-P-Si composite oxide catalyst precursor used for producing maleic anhydride from butance
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United States of America Patent
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Jun 16, 2009
Grant Date -
Oct 26, 2006
app pub date -
Jan 30, 2004
filing date -
Jan 30, 2003
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Abstract
in a mixture of alcohols consisting of isobutanol and benzyl alcohol in a volume ratio of 2.5-5.0, then adding a phosphoric oxy-acid and an alkylsilicon in turn. The catalyst precursor prepared according to said process has a small pore volume, a relatively high bulk density in an appropriate pore size distribution.
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