Precipitated silica particulates having controlled porosity

Details Precipitated silica particulates having controlled porosity Precipitated silica particulates having controlled porosity

1994-04-13

1999-10-19

Langel, Wayne

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423335, C01B 3312

Patent

active

059684704

ABSTRACT:
Precipitated silica particulates having a BET specific surface ranging from 20 to 300 m.sup.2 /g, a CTAB specific surface ranging from 10 to 200 m.sup.2 /g, an oil uptake (DBP) ranging from 80 to 400 cm.sup.3 /100 g, a pore volume ranging from 1 to 10 cm.sup.3 /g and a mean pore diameter ranging from 10 to 50 nm, well adapted for such applications as the coating of paper and catalysis, are prepared by (a) simultaneously introducing a silicate and an acid into a dispersion of colloidal silica, thereby providing a silica suspension, (b) next decreasing the pH of such suspension to a value ranging from 3 to 7, and (c) then separating the silica particulates from the final suspension and drying them.

REFERENCES:
patent: 2731326 (1956-01-01), Alexander et al.
patent: 3070426 (1962-12-01), Winyall
patent: 3794712 (1974-02-01), Aboutboul et al.
patent: 3800031 (1974-03-01), Sale et al.
patent: 3803046 (1974-04-01), Winyall et al.
patent: 3860682 (1975-01-01), Reinhardt et al.
patent: 3893840 (1975-07-01), Wason
patent: 3954944 (1976-05-01), Aldcroft et al.
patent: 3963512 (1976-06-01), Swift et al.
patent: 3988162 (1976-10-01), Wason
patent: 4015996 (1977-04-01), Wason
patent: 4040858 (1977-08-01), Wason
patent: 4045240 (1977-08-01), Wason et al.
patent: 4049781 (1977-09-01), Acker et al.
patent: 4076549 (1978-02-01), Wason
patent: 4144321 (1979-03-01), Wason
patent: 4191742 (1980-03-01), Wason et al.
patent: 4216113 (1980-08-01), Winyall
patent: 4251281 (1981-02-01), Machurat et al.
patent: 4272509 (1981-06-01), Wason
patent: 4274766 (1981-06-01), Joubert et al.
patent: 4331706 (1982-05-01), Kindrick
patent: 4340583 (1982-07-01), Wason
patent: 4422880 (1983-12-01), Wason
patent: 4508607 (1985-04-01), Winyall
patent: 4562065 (1985-12-01), Hayes et al.
patent: 4562066 (1985-12-01), Hayes et al.
patent: 4581292 (1986-04-01), Shinpo et al.
patent: 4590052 (1986-05-01), Chevallier et al.
patent: 4676964 (1987-06-01), Seki et al.
patent: 4704425 (1987-11-01), Lagarde et al.
patent: 4708859 (1987-11-01), Chevallier
patent: 4738838 (1988-04-01), Shinpo et al.
patent: 4842838 (1989-06-01), Chevallier
patent: 4874594 (1989-10-01), Chevallier
patent: 4956167 (1990-09-01), Oldcroft et al.
patent: 4973462 (1990-11-01), Akira et al.
patent: 5124143 (1992-06-01), Muhlemann et al.
patent: 5614177 (1997-03-01), Persello
patent: 5616316 (1997-04-01), Persello
"Perry's Chemical Engineers' Handbook", Green & maloney, 6th Edition, pp. 18.1-18.3, 18.50, McGraw Hill, NY, NY (1984).
Wason, S. K., "Cosmetic Properties and Structure of Fine-Particle Synthetic Precipitated Silicas", J. Soc. Cosmet. Chem., vol. 29, pp. 497-521 (Aug., 1978).

Affiliated with

Also associated with

Rating

Precipitated silica particulates having controlled porosity does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Precipitated silica particulates having controlled porosity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precipitated silica particulates having controlled porosity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2051873