Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Silicon containing
Patent
1996-10-25
1998-12-01
Caldarola, Glenn
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Silicon containing
502400, 502414, 502415, B01J 2010, B01J 2000
Patent
active
058438629
ABSTRACT:
A process for manufacturing a collapsed composition is described in which the manufactured composition is substantially composed of microcrystallites collectively of the formula: ##EQU1## where M.sup.2+ is a divalent metal, M.sup.3+ is a trivalent metal, and T is vanadium, tungsten, or molybdenum.
The microcrystallites are so small as to be undetectable through conventional x-ray diffraction techniques, yet high resolution electron microscopy reveals that a substantial portion of the microcrystallites are composed of a solid solution having aluminum oxide molecularly dispersed in a divalent metal monoxide crystal structure. Another portion of the microcrystallites are constituted by a spinel phase. The collapsed composition is suitable as a sulfur oxide absorbent, having comparatively high capacity and comparatively fast absorption and desorption rates, and is also suitable as a nitrogen oxide reduction catalyst. The collapsed composition may be produced by heat treating a layered mixed hydroxide clay having interlayer anions in monometalate form. The reagents for the manufacturing process are relatively salt-free, as compared to reagents utilized in previous manufacturing processes.
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Amoco Corporation
Bullock In Suk
Caldarola Glenn
Sloat Robert E.
Yesukevich Robert A.
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