Catalyst – solid sorbent – or support therefor: product or process – In form of a membrane
Patent
1988-10-31
1990-10-09
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
In form of a membrane
55 16, 55158, 21050021, 21050025, 21050026, 21050027, 427244, 435176, 435177, 502 7, 502401, 502415, B01D 7106, B01D 7102, B01J 2028, B01J 2022
Patent
active
049620738
ABSTRACT:
A treated permeable inorganic membrane is disclosed comprising a metal oxide/hydroxide capable of reacting with a phosphoric acid ester. The treated membrane has good chemical stability over a pH range of from 2 to 12. Chemically bonded to the metal oxide/hydroxide surface of the membrane is a monomolecular layer of one or more phosphoric acid esters selected from the class consisting of one or more phosphoric acid monoesters having the formula (RO)PO(OH).sub.2, one or more phosphoric acid diesters having the formula (RO)(R'O)PO(OH), and mixtures of same where R comprises a 1-30 carbon-containing group and R'comprises hydrogen or a 1-30 carbon-containing group. Excess phosphoric acid esters not bonded to the underlying membrane surface is removed to ensure formation of the monomolecular layer of the phosphoric acid esters on the surfaces of the membrane.
REFERENCES:
patent: 3013904 (1961-12-01), Cupery
patent: 4202798 (1980-05-01), Johnson et al.
patent: 4308079 (1981-12-01), Venables et al.
patent: 4382016 (1983-05-01), Rickelton et al.
patent: 4506628 (1985-03-01), Stockel
patent: 4786628 (1988-11-01), Wieserman et al.
patent: 4788176 (1988-11-01), Wieserman et al.
patent: 4816159 (1989-03-01), Khosah et al.
"Selective Retention of Organic Phoshate Esters & Phosphonates on Aluminum Oxide"-Coletti Previero et al., Bioscience Reports-vol. 6, No. 5-1988, pp. 477-483.
"The Adsorption of Di-H-Butylphosphate on Alumina from Orgaic Solutions or Some Metal Oxides"-Gal et al., J. Inorg. Nucl. Chem., vol. 25, 1963-pp. 129-130.
Martin Edward S.
Wieserman Larry F.
Alexander Andrew
Aluminum Company of America
Konopka Paul E.
LandOfFree
Surface treated porous ceramic membranes and method of making sa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface treated porous ceramic membranes and method of making sa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface treated porous ceramic membranes and method of making sa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-973416