Nitrided mixed oxide catalyst system and a process for the production of ethylenically unsaturated carboxylic acids or esters
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United States of America Patent
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Jul 26, 2016
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Jun 20, 2013
app pub date -
Jun 24, 2011
filing date -
Jul 1, 2010
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Abstract
The invention relates to a method of producing an ethylenically unsaturated carboxylic acid or ester, preferably an α, β ethylenically unsaturated carboxylic acid or ester. The method includes contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester in the presence of a catalyst and optionally in the presence of an alcohol. The catalyst comprises a nitrided metal oxide having at least two types of metal cations, M1 and M2, wherein M1 is selected from the metals of group 2, 3, 4, 13 (called also IIIA) or 14 (called also IVA) of the periodic table and M2 is selected from the metals of groups 5 or 15 (called also VA) of the periodic table. The invention extends to a catalyst system.
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