Patent GB-1088159-A (GB)
Title: Method of preparing a hydrocarbon conversion catalyst
Inventor: STOVER WILLIAM ALBERT
IPC: B01J29/08
Filed: 1966-03-18
Abstract: A hydrocarbon conversion catalyst comprises a rare-earth crystalline aluminosilicate distributed in a silica-metal oxide gel formed by mixing the aluminosilicate and gel in an aqueous medium at an acidic pH.  Conversion processes include isomerization, dealkylation, alkylation, disproportionation, dehydrogenation dehydration of alcohols, desulphurization, hydrogenation, hydroforming, reforming, hydrocracking and polymerization.  For dehydrogenation of propane, butylene, butane, penthane, cyclopentane, cyclohexane, methyl cyclohexane at 300 DEG  F.-1025 DEG  F. with an L.H.S.V. of 0.2-500, the catalyst may also include as promoters metals, oxides and sulphides of Pt, Pd, Rh, W, Fe, Cu or Ni.  For desulphurization of hydrocarbons, e.g. shale distillates, involving mainly hydrogenation at 600 DEG  F.-1000 DEG  F. at an L.H.S.V. of 0.2-50, the catalyst may also include the oxides and sulphides of Co, Mo, Cr, Fe, Mn, V, Cu and mixtures thereof.  For hydrogenation of mono- and di-olefins and unsaturated cyclic hydrocarbons at up to 1000 DEG  F. at an L.H.S.V. of 0.5 to 5.0 the catalyst may include Ni, Cu, Fe and Pt group metals.  For hydrocracking of heavy petroleum residual stocks e.g. Mid Continent gas oil a boiling range of 450-919 DEG  F. at 95% at 400-825 DEG  F. using molar ratios of hydrogen/hydrocarbon charge between 2 and 80, a pressure between 10 and 2500 p.s.i.g. and an L.H.S.V. between 0.1 and 10, the catalyst may include 0.05-10% by weight of Pt, Pd, Rh, Os, Ir and Ru.  The catalyst of the invention may also be used for alkylation of aromatics at 15-850 DEG  F. and 0-1000 p.s.i.g.ALSO:A method of preparing a hydrocarbon conversion catalyst comprising a rare-earth crystalline aluminosilicate distributed in a silica-metal oxide gel comprises mixing in an aqueous medium at an acidic pH the alumino-silicate and the gel.  The aluminosilicate may be a rare earth X or Y zeolite containing less than 5 wt. percent alkali metal and dehydrated to a water content of 0.3 to 0.6 weight percent water by heating at 650 - 1500 DEG F for 10-60 minutes.  The thus treated zeolite may then be added as a slurry in a rare earth chloride or ammonium chloride solution to an aqueous medium at a pH not greater than 5 the aqueous medium being formed by gelling a sodium silicate solution to form a silica hydrogel, adding to the silica hydrogel a dissolved aluminium or zirconium salt and treating the mixture of hydrogel and salt to form an alumina or zirconia gel on the silica gel at an acidic pH.  The resulting mixture may be filtered and spray dried to form particles in the range 1 to 200m , and the particles may be base exchanged to a maximum alkali metal oxide content of 0.2 weight percent, and dried once more.  For dehydrogenation of hydrocarbons at 300 DEG F -1025 DEG F promoters used may be metals oxides and sulphides of Pt, Pd, Rh, W, Fe, Cu or Ni.  For desulphurization of hydrocarbons at 600 DEG F to 1000 DEG F involving mainly hydrogenation, the catalyst may contain one or a mixture of the oxides and sulphide of Co, Mo, Cr, Fe, Mn, V, and Cu. Hydrogenation catalysts may also include the oxides of Ni, Pd, Pt.