Hydro-refining catalyst, carrier for use therein and method for production thereof
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United States of America Patent
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Sep 4, 2007
Grant Date -
Sep 23, 2004
app pub date -
Jul 9, 2002
filing date -
Jul 10, 2001
priority date (Note) -
Expired
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Abstract
A method for producing a hydrorefining catalyst of the present invention has a step of preparing an aluminum solution containing phosphorus in a molar ratio of 0.001 to 0.05 with respect to aluminum; a step of neutralizing the prepared aluminum solution to produce a pseudo-boehmite powder; a step of forming the pseudo-boehmite powder followed by performing calcination at a temperature of not less than 650.degree. C. to obtain a carrier; and a step of carrying a hydrogenation-active metal on the pseudo-boehmite powder or the carrier. The dispersion of the concentration distribution of phosphorus in the carrier of the obtained catalyst is within 10%. This method makes it possible to obtain the hydrorefining catalyst which has a practically sufficient mechanical strength and which has an excellent activity.
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