Catalyst for producing propenal with direct oxidation of propylene and method of producing the same
A catalyst, acrolein technology, used in the preparation of organic compounds, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc.
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[0021] 1. Preparation of catalyst (I) Mo-W-Bi-Fe-Co-Cs-Si-O. fine powder
[0022] Dissolve 2442.6 grams of ammonium heptamolybdate and 162 grams of ammonium paratungstate into 2500 grams of water, and the solution is liquid A; add 584 grams of bismuth nitrate to 1600 grams of water and 120 grams of concentrated nitric acid, add 1750 grams of cobalt nitrate to 500 grams of water, and add 729 grams of bismuth nitrate to 500 grams of water. Ferric nitrate was added to 600 grams of water. After the three nitrates are dissolved, they are mixed to become liquid B. Liquid B is dripped into liquid A at 60°C under stirring. After stirring for 30 minutes, liquid C is obtained. Dissolve 5.2 g of cesium nitrate in 20 g of water and 356.26 g of cesium nitrate Add 20% concentration of silica sol into solution C. After continuing to stir for 30 minutes, heat up and evaporate, dry, and treat the dried material at 350° C. for 2 hours, and then grind it into a fine powder below 50 μm.
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