Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1998-05-07
2000-08-29
Dunn, Tom
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502333, 502334, 502339, 423628, B01J 2340
Patent
active
061108626
ABSTRACT:
A novel catalytic material is prepared by dispersing a catalytically active species, e.g., one or more platinum group metals, on a support phase that contains a high porosity, meso-pores high surface area (HPMPHSA) material. The HPMPHSA material has a porosity, measured in milliliters per gram of material, that is typically at least about 30 percent greater than that of a corresponding conventional material, preferably at least 50 percent greater. In a particular embodiment, the support phase of the catalytic material contains a HPMPHSA alumina having a porosity of about 0.9 ml/g, whereas a conventional alumina typically has a porosity of about 0.45 ml/g. The surface area is above 90, preferably above 100, more preferably equal or above 150 to 160 m.sup.2 /g. The support phase may be wholly composed of the HPMPHSA material or it may be composed of a mixture of the HPMPHSA material and a conventional material. Such a mixture preferably contains at least about 20 percent HPMPHSA material, by weight, e.g., 20 to 50 percent by weight.
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Chen Shau-Lin F.
Kim Chong
Rabinowitz Harold N.
Dunn Tom
Engelhard Corporation
Negin Richard A.
Nguyen Cam N.
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