B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/116, 252/37,
B01J 23/84 (2006.01) B01J 21/04 (2006.01) B01J 23/85 (2006.01) B01J 37/00 (2006.01) B01J 37/06 (2006.01) B01J 37/08 (2006.01) C10G 45/04 (2006.01) C10G 45/46 (2006.01)
Patent
CA 1109856
ABSTRACT OF THE DISCLOSURE A method of preparing hydrotreating catalysts for catalytic hydrodesulfurization of petroleum, having activated alumina supports, comprising; preparing a partially dehydrated, rehydratable alumina by flash calcining Bayer process hydrated alumina; rehydrating said partially dehydrated alumina with water which contains acid at pH below 7 at rehydration temper- ature, for the time needed for rehydration; solidifying the rehydrated alumina; mulling the solidified rehydrated alumina with sufficient water to make a mulled mixture suitable for particle forming, forming particles of desired size and config- uration from the mulled mixture; drying the formed alumina particles and then calcining same by heating to calcining temper- ature; impregnating the calcined particles with liquid solutions of soluble compounds which are thermally decomposable to oxides of cobalt or nickel and to oxides of molybdenum or tungsten; and activating the impregnated alumina particles by calcining heat treatment to form hydrotreating catalysts.
279240
Bambrick William E.
Ebel Robert H.
Spitzer Donald P.
American Cyanamid Company
Smart & Biggar
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