Reduction of platinum group metal catalysts
AssigneeThe British Petroleum Company p.l.c.
InventorsBernard Whiting Burbidge, Terence John Cook, Roger Crowson
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Abstract
A method for reducing catalysts of a platinum group metal on a support comprises contacting the catalyst with a moist flowing stream of hydrogen at elevated temperature. The catalyst is brought to a reducing temperature of at least 300.degree. C in a non-reducing wet atmosphere, before the introduction of the hydrogen.
Claims11
A method for reducing catalysts of a platinum group metal on a support which method comprises contacting the catalyst with hydrogen for a reduction time period in the range of 1 to 24 hours at elevated temperature in the range of 350.degree. to 480.degree. C. characterized in that the catalyst is brought to a reduction temperature in the range 350.degree. to 480.degree. C. in a non-reducing wet atmosphere before the introduction of hydrogen and the reduction is carried out under superatmospheric pressure without dropping the temperature of the catalyst below 350.degree. C. in the presence of moisture to produce amorphous platinum group metal of particle size less than 20A.
Dependencies are inferred from the claim text.