1
William C Behrmann, Kym B Arcuri, Charles H Mauldin: Surface supported cobalt catalysts, process utilizing these catalysts for the preparation of hydrocarbons from synthesis gas and process for the preparation of said catalysts. Exxon Research and Engineering Company, Jay Simon, Estelle C Bakun, August 13, 1996: US05545674 (68 worldwide citation)

A supported particulate cobalt catalyst is formed by dispersing cobalt, alone or with a metal promoter, particularly rhenium, as a thin catalytically active film upon a particulate support, especially a silica or titania support. This catalyst can be used to convert an admixture of carbon monoxide a ...


2
Larry E Pedrick, Charles H Mauldin, William C Behrmann: Draft tube for catalyst rejuvenation and distribution. Exxon Research & Engineering Company, Joseph J Allocca, December 7, 1993: US05268344 (35 worldwide citation)

Catalyst in a slurry phase reactor is rejuvenated and uniformly distributed in said reactor using a substantially vertical draft tube fully immersed in the slurry which utilizes a rejuvenating gas injected substantially near the bottom of the substantially vertical draft tube whereby catalyst near t ...


3
William C Behrmann, Stephen C Leviness: Hydrocarbon synthesis catalyst slurry rejuvenation with gas disengagement. Exxon Research And Engineering Company, Jay Simon, October 6, 1998: US05817702 (34 worldwide citation)

A reversibly deactivated, particulate catalyst in a slurry hydrocarbon synthesis slurry is rejuvenated by circulating the slurry from a slurry body through (i) a gas disengaging zone to remove gas bubbles from the slurry, (ii) a catalyst rejuvenation zone in which a catalyst rejuvenating gas contact ...


4
William C Behrmann, Charles H Mauldin, Larry E Pedrick: Hydrocarbon synthesis reactor employing vertical downcomer with gas disengaging means. Exxon Research & Engineering Co, Joseph J Allocca, January 17, 1995: US05382748 (28 worldwide citation)

The operation of a hydrocarbon synthesis reactor and catalyst distributed in the reaction slurry therein are improved by the presence in said reactor of one or more vertical downcomers open at both ends with gas disengaging areas located at their top end. The downcomer which circulates catalyst from ...


5
William C Behrmann, Stephen C Leviness: Temperature control in draft tubes for catalyst rejuvenation. Exxon Research and Engineering Company, Joseph J Allocca, February 22, 1994: US05288673 (17 worldwide citation)

Catalyst in a slurry phase reactor is rejuvenated in said reactor using a substantially vertical draft tube fully immersed in the slurry which utilizes a rejuvenating gas injected substantially near the bottom of the substantially vertical draft tube whereby catalyst near the bottom of the slurry ph ...


6
William C Behrmann, Charles H Mauldin, Kym B Arcuri: Cobalt-titania catalysts, process utilizing these catalysts for the preparation of hydrocarbons from synthesis gas, and process for the preparation of said catalysts. Exxon Research and Engineering Company, Jay Simon, October 9, 1990: US04962078 (16 worldwide citation)

A supported particulate cobalt catalyst is formed by dispersing cobalt, alone or with a metal promoter, particularly rhenium, as a thin catalytically active film upon a particulate titania or titania-containing support, especially one wherein the rutile:anatase ratio of the support is at least about ...


7
William C Behrmann, Stephen C Leviness: Hydrocarbon synthesis catalyst slurry rejuvenation with gas disengagement (LAW 783). Exxon Research and Engineering Co, October 26, 1999: US05973012 (13 worldwide citation)

A reversibly deactivated, particulate catalyst in a slurry hydrocarbon synthesis slurry is rejuvenated by circulating the slurry from a slurry body through (i) a gas disengaging zone to remove gas bubbles from the slurry, (ii) a catalyst rejuvenation zone in which a catalyst rejuvenating gas contact ...


8
William C Behrmann, Stephen M Davis, Charles H Mauldin: Activation conditions to maximize the HSC activity of supported cobalt catalysts. Exxon Research and Engineering Company, Jay Simon, December 1, 1992: US05168091 (12 worldwide citation)

The activity of supported cobalt catalysts for hydrocarbon synthesis is maximized by carrying out the reduction at conditions that keep both the partial pressure of water vapor and the maximum reduction temperature below critical maximum values. For titania supported cobalt catalysts, the preferred ...


9
William C Behrmann, Charles H Mauldin, Kym B Arcuri: Cobalt-titania catalysts, process utilizing these catalysts for the preparation of hydrocarbons from synthesis gas, and process for the preparation of said catalysts (C-2448). Exxon Research and Engineering Company, Jay Simon, July 7, 1992: US05128377 (12 worldwide citation)

A supported particulate cobalt catalyst is formed by dispersing cobalt, alone or with a metal promoter, particularly rhenium, as a thin catalytically active film upon a particulate titania or titania-containing support, especially one wherein the rutile:anatase ratio of the support is at least about ...


10
Stephen C Leviness, Charles J Mart, William C Behrmann, Stephen J Hsia, Daniel R Neskora: Slurry hydrocarbon synthesis process with increased catalyst life. Exxon Research and Engineering Company, Jay Simon, September 4, 2001: US06284807 (11 worldwide citation)

A slurry catalytic hydrocarbon synthesis process which employs a catalyst comprising a supported cobalt component achieves a short term catalyst half life of more than 10 days, by using a syngas feed which contains less than fifty parts per billion of a combined total amount of HCN and NH



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