B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/99
B01J 27/02 (2006.01) B01J 23/22 (2006.01) B01J 27/055 (2006.01) B01J 37/02 (2006.01) C07C 51/31 (2006.01)
Patent
CA 1178571
NOV 27 1984 Abstract Catalytic material is prepared by impregnating porous silica with an aqueous solution containing vanadyl oxalate (YOC204), potassium sulfate (K2S04) and potassium bisulfate (KHS04). A free-flowing dry-appearing powder is provided comprising particles having substantially all compounds deposited from the impregnating solution attached to the silica particles within pores of the particles. Subsequent calcining of the powder provides a mixture of compounds within the particle pores containing at least one oxide of vanadium and at least one sulfate of potassium. Catalytic material prepared by the disclosed process is characterized in having a substantially uniform concen- tration of deposited compounds within the pores of the silica support. The catalytic material is particularly useful in a process for fluid bed oxidation of naphthalene to phthalic anhydride, in which oxidation process the catalyst provides high product yield at a low catalyst attrition rate.
411066
Harju Philip H.
Pasek Eugene A.
Borden Ladner Gervais Llp
Koppers Company Inc.
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