Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1986-03-04
1987-07-28
Shine, W. J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
518715, 518717, B01J 2310, B01J 2346, B01J 2358
Patent
active
046832190
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a process for the production of a catalyst for use in the conversion of gaseous mixtures principally comprising carbon monoxide and hydrogen, hereinafter referred to as synthesis gas, to hydrocarbons of carbon number greater than one, in particular to aliphatic hydrocarbons in the gasoline boiling range, and to the use of the catalyst so-produced in the conversion of synthesis gas to the aforesaid hydrocarbons.
The conversion of synthesis gas to hydrocarbons by the Fischer-Tropsch process has been known for many years but the process has only achieved commercial significance in countries such as South Africa where unique economic factors prevail. The growing importance of alternative energy sources such as coal and natural gas has focussed renewed interest in the Fischer-Tropsch process as one of the more attractive direct and environmentally acceptable routes to high quality transportation fuels.
Of the Group VIII metals, ruthenium has long been known to be one of the most active catalysts in the conversion of synthesis gas, the product, at moderate pressures and above, being high molecular weight paraffin waxes and, at low pressures, principally methane. Several recent patent publications, for example U.S. Pats. Nos. 4,042,614; 4,171,320; 4,206,134; 4,413,064 and 4,410,637 and GB-A No. 2119277, describe and claim the formation of different products from synthesis gas using catalysts containing ruthenium as an active component.
U.S. Pat. No. 4,042,614 describes a process for the selective synthesis of olefins from C.sub.2 to C.sub.10 chain length inclusive from synthesis gas using as catalyst ruthenium on a titanium-containing oxide support, wherein said titanium-containing oxide support is selected from the group consisting of TiO.sub.2, ZrTiO.sub.4, TiO.sub.2 -carbon, TiO.sub.2 Al.sub.2 O.sub.3, TiO.sub.2 -SiO.sub.2, alkaline earth titanates, rare earth titanates and mixtures thereof.
U.S. Pat. No. 4,171,320 describes a process for the synthesis of olefins of from C.sub.2 to C.sub.5 chain length inclusive from synthesis gas using as catalyst ruthenium on a support selected from the group consisting of V.sub.2 O.sub.3, Nb.sub.2 O.sub.5, Ta.sub.2 O.sub.5, Al.sub.2 O.sub.3 -V.sub.2 O.sub.3, Al.sub.2 O.sub.3 -Nb.sub.2 O.sub.5, Al.sub.2 O.sub.3 -Ta.sub.2 O.sub.5, SiO.sub.2 -V.sub.2 O.sub.3, SiO.sub.2 -Nb.sub.2 O.sub.5, Si.sub.2 -Ta.sub.2 O.sub.5, V.sub.2 O.sub.3 -carbon, Nb.sub.2 O.sub.5 - carbon, Ta.sub.2 O.sub.5 -carbon, alkaline earth-group VB oxides, alkali metal-Group VB oxides, Group IVB-Group VB oxides and mixtures thereof.
U.S. Pat. No. 4,206,134 describes a process for the enhanced synthesis of C.sub.2 -C.sub.4 olefins with reduced production of methane from synthesis gas using as catalyst ruthenium on a managanese-containing oxide support, wherein said manganese-containing oxide support is selected from the group consisting of MnO, Al.sub.2 O.sub.3 -MnO, SiO.sub.2 -MnO, MnO-carbon, Group IVB-manganese oxide, Group VB-manganese oxides, rare earth-manganese oxides and mixtures thereof.
U.S. Pat. No. 4,413,064 describes a process for the conversion of synthesis gas to a product high in straight chain paraffins in the diesel fuel boiling range from synthesis gas utilising a catalyst consisting essentially of cobalt, thoria or lanthana and ruthenium on an alumina support wherein said alumina is gamma-alumina, etaalumina or a mixture thereof, said catalyst being prepared by contacting finely divided alumina with salt of thorium or lanthanum.
U.S. Pat. No. 4,410,637 describes a process for the preparation of a hydrocarbon mixture consisting substantially of C.sub.5 -C.sub.12 hydrocarbons from synthesis gas using a catalyst containing one or more of iron, nickel, cobalt, chromium and/or ruthenium and, as a carrier, magadite, a laminar crystalline silicate compound capable of absorbing metal ions or metal salts by intercalation.
The reaction of carbon monoxide and hydrogen on rare earth metal oxide catalysts is described in Chemical Communications, 1983, page 763/764 by Kief
REFERENCES:
patent: 4172849 (1979-10-01), Drake
Cotton Leonard
Nay Barry
Wilcox Michael J.
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