Copper Phosphotungstate
Chinese Name: 磷鎢酸銅
English Name: Copper Phosphotungstate
Chemical Formula: Cu1.5PW12O40?15H2O
Copper phosphotungstate is a product of reaction between phosphotungstic acid and copper nitrate, mainly used as catalyst for petrochemical oxidative desulfurization, catalytic synthesis of acetyl acetal, tetrahydrofuran, etc..
Copper phosphotungstate catalyzed a series of aldehydes and acetic anhydride synthesis of the corresponding acetyl acetal reaction. Result shows that formaldehyde and acetic anhydride substance ratio is 1:2. Copper phosphotungstate takes amount of aldehyde accounted for only 0.5% (molar ratio) the reaction can be completed in a relatively short period of time, the product yield of 62% to 96%. The catalyst in the presence of ketones and aldehydes at the same time, can selectively react with aldehyde.
Copper Phosphotungstate Preparation
Weigh a certain amount of phosphotungstic acid, add water and alcohol. Keep stirring, add in copper nitrate slowly, keep stirring for 1h, the decomposition reaction will happen. Heat to 80℃, remove alcohol and part of water, cool down to room temperature, crystalline, seasoning, filtering, dry for 2 hours under 120℃ will obtain copper phosphotungstate.
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