Compositions – Preservative agents – Anti-corrosion
Patent
1989-07-11
1991-07-02
Lovering, Richard D.
Compositions
Preservative agents
Anti-corrosion
106483, 501 12, B01J 1300
Patent
active
050283529
ABSTRACT:
A silica-alumina composition characterized by having an essentially closed pore surface as measurable by low surface area consisting essentially of a range of alumina by weight therein of from about 40% to about 50% and the remainder by weight, silica, the surface area of said composition being substantially less in magnitude than that for silica-alumina compositions having a percentage by weight of alumina essentially outside of said range, and further characterized by having a skeletal density for percentages of alumina by weight within a portion of said range substantially less than the skeletal density of silica-alumina compositions having a percentage by weight of alumina substantially outside said portion of said range.
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Fripiat et al.: "Structure and Properties of Amorphous Silicoaluminas, II, Lewis and Bronsted Acid Sites", The Journal of Physical Chemistry, vol. 69, No. 10, Oct. 1965, pp. 3274-3279.
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Rouxhet, P. G. and Sempels, R. E., "Hydrogen Bond Strengths and Acidities of Hydroxyl Groups on Silica-Alumina Surfaces and in Molecules in Solution", J. Chem. Soc. Faraday Trans., 2021-2032, (1974).
Hietala Susan L.
Smith Douglas M.
Lovering Richard D.
Sopp Albert
University of New Mexico
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