Patent US5312758A successfully refreshed from Google Patents.
EP0266898A2
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EP
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Surface-supported particulate metal compound catalysts, their preparation and their use in hydrocarbon synthesis reactions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1987-10-02
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Granted: —
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Expires: 2007-10-02
Abstract
Abstract A catalyst composition comprised of a particulate metal compound dispersed, alone or with a metal promoter, as a thin catalytically active film upon a particulate support, the film thickness being determined to maximize CO conversion and minimize methane conversion in a hydrocarbon synthesis reaction. The preparation of the catalyst and its use in a process to convert carbon monoxide and hydrogen to a distillate fuel is disclosed.
Inventors
- 👤 William Claus Behrmann
- 👤 Charles Harrison Mauldin
- 👤 Kym Brian Arcuri
- 👤 Mordechay Herskowitz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/889; B01J23/8896; B01J23/74; B01J23/75; B01J23/83; B01J23/89; B01J23/8913; B01J37/00; B01J37/02; B01J37/0215; B01J37/0232; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; C07C1/0445; B01J35/00; B01J35/30; B01J35/396; B01J35/397; C07C2521/00; C07C2521/06; C07C2523/00; C07C2523/10; C07C2523/12; C07C2523/16; C07C2523/32; C07C2523/36; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/76; C07C2523/83; C07C2523/84; C07C2523/889; Y; Y02; Y02P; Y02P30/00; Y02P30/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
A catalyst composition useful for the conversion of synthesis gas to hydrocarbons at high productivity with low methane selectivity, said composition comprising a particulate metal compound on a support characterized in that said support includes an inert or hollow core and an outer layer of porous inorganic refractory oxide, said layer having a thickness determined to maximise CO conversion and minimize conversion wherein said thickness is determined by relating the rate of diffusion of said CO and H₂ to a rate of reaction at a predetermined temperature, partial pressures, support geometry and catalyst type and preparation.
Claim 2
Dependent Claim
96 words
A catalyst composition useful for the conversion of synthesis gas to hydrocarbons at high productivity with low methane selectivity, said composition comprising a particulate metal compound on a support characterized in that said support includes an inert or hollow core and an outer layer of porous inorganic refractory oxide, said layer having a thickness determined to maximise CO conversion and minimize conversion wherein said thickness is determined by relating the rate of diffusion of said CO and H₂ to a rate of reaction at a predetermined temperature, partial pressures, support geometry and catalyst type and preparation.
Claim 3
Dependent Claim
27 words
A catalyst composition according to Claim 1 further characterized in that said metal is a metal selected from the group consisting of ruthenium, cobalt or mixtures thereof.
Claim 4
Dependent Claim
75 words
A catalyst composition useful for the conversion of synthesis gas to hydrocarbons at high productivity, with low methane selectivity, characterized in that it comprises cobalt dispersed as a catalytically active layer upon the surface of a support, the layer ranging in average thickness from about 0.02 mm to about 0.25 mm, with the loading of cobalt ranging from about 0.01 g/cm³ to about 0.15 cm³, calculated as metallic cobalt per packed bulk volume of catalyst.
Claim 5
Dependent Claim
75 words
A catalyst composition useful for the conversion of synthesis gas to hydrocarbons at high productivity, with low methane selectivity, characterized in that it comprises cobalt dispersed as a catalytically active layer upon the surface of a support, the layer ranging in average thickness from about 0.02 mm to about 0.25 mm, with the loading of cobalt ranging from about 0.01 g/cm³ to about 0.15 cm³, calculated as metallic cobalt per packed bulk volume of catalyst.
Claim 6
Dependent Claim
42 words
A composition according to any one of Claims 1 - 3 further characterized in that at least one metal selected from the group consisting of rhenium, hafnium, zirconium, cerium, uranium, thorium and mixtures thereof constitutes part of the catalytically active surface layer.
Claim 7
Dependent Claim
29 words
A composition according to any one of Claim 1 - 4 further characterized in that the catalytically active surface layer ranges up to about 180 microns (mµ) in thickness.
Claim 8
Dependent Claim
19 words
A composition according to any one of Claims 1 - 5 further characterized in that said support comprises titania.
Claim 9
Dependent Claim
33 words
A composition according to any one of Claims 1 - 6 further characterized in that the support is comprised of a titania which has a rutile:anatase weight ratio of at least about 3:2.
Claim 10
Dependent Claim
132 words
A process for the production of the catalyst of any one of Claims 1 to 7 characterized by the steps comprising heating said support to a temperature equal to or in excess of 140 degrees C, and repetitively contacting said heated support with a spray of a solution which contains from about 0.05 g/ml to about 0.25 g/ml of a cobalt compound, calculated as metallic cobalt, per ml of solution, while drying and calcining the cobalt-containing support between each contact with the solution, to form a catalytically active layer of cobalt upon the surface of said support of average thickness ranging from about 0.02 mm to about 0.25 mm, with the loading of cobalt ranging from about 0.01 g/cm³ to about 0.15 g/cm³, calculated as metallic cobalt per packed volume of catalyst.
Claim 11
Dependent Claim
44 words
A process according to Claim 8 further characterized in that the support is comprised of titania which is heated to a temperature ranging from about 140°C to about 185°C and thereafter subjected to from about 3 to about 12 contacts with said spray solution.
Claim 12
Dependent Claim
92 words
A process for the conversion of a feedstock comprising H₂ and CO, such as for example a synthesis gas, to hydrocarbons, with low methane selectivity comprising contacting at reaction conditions a feed comprised of an admixture of CO and H₂ in a H₂:CO molar ratio equal to or greater than about 0.5:1 at a total (gauge) pressure equal to or greater than about 80 psig (551.6 kPa) over a catalyst composition of any of Claims 1 - 7 or a catalyst composition made by the process of Claim 8 or Claim 9.
Claim 13
Dependent Claim
55 words
A process according to Claim 10 further characterized in that the reaction conditions are defined withnin ranges as follows: H₂:CO mole ratio about 0.5:1 to 4:1 Gas Hourly Space Velocities, V/Hr/V about 100 to 5000 Temperatures, degrees C about 160 to 290 Total Pressure, (psig) kPa (gauge) (about 80 to 600) about 551.6 to 4.137
Claim 14
Dependent Claim
35 words
A process according to Claim 10 or Claim 11 further characterized in that at productivities greater than 150 h⁻¹ less than 10 mol percent of the carbon monoxide which is converted is converted to methane.
References Cited (Backward Citations)
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