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Catalytic, hollow, refractory spheres, conversions with themImproved, heterogeneous, refractory catalysts are in the form of gas-impervious, hollow, thin-walled spheres (10) suitable formed of a shell (12) of refractory such as alumina having a cavity (14) containing a gas at a pressure greater than atmospheric pressure. The wall material may be itself catalytic or a catalytically active material coated onto the sphere as a layer (16), suitably platinum or iron, which may be further coated with a layer (18) of activator or promoter. The density of the spheres (30) can be uniformly controlled to a preselected value within .+-.10 percent of the density of the fluid reactant such that the spheres either remain suspended or slowly fall or rise through the liquid reactant.
Document ID
20080005931
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Wang, Taylor G.
Elleman, Daniel D.
Lee, Mark C.
Kendall, Jr., James M.
Date Acquired
August 24, 2013
Publication Date
February 14, 1989
Subject Category
Inorganic, Organic And Physical Chemistry
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,804,796
Patent Application
US-PATENT-APPL-SN-045650

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