Precipitated silica particulates having controlled porosity

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

1992-01-24

1994-08-30

Chaudhuri, Olik

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

106492, 424 49, C01B 3312

Patent

active

053425987

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: 3070426 (1962-12-01), Winyall
patent: 3893840 (1975-07-01), Wason
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: 4144321 (1979-03-01), Wason
patent: 4191742 (1980-03-01), Wason et al.
patent: 4251281 (1981-02-01), Machurat et al.
patent: 4272509 (1981-06-01), Wason
patent: 4279766 (1981-07-01), Joubert et al.
patent: 4331706 (1982-05-01), Kindrick
patent: 4422880 (1983-12-01), Wason
patent: 4562065 (1985-12-01), Hayes et al.
patent: 4581292 (1986-04-01), Shinpo et al.
patent: 4590052 (1986-05-01), Chevallier et al.
patent: 4704425 (1987-11-01), Lagarde et al.
patent: 4874594 (1989-10-01), Chevallier
patent: 4956167 (1990-09-01), Aldcroft et al.
Wason, Satish "Pigment Handbook: vol. 1: Properties and Economics Second Edition" John Wiley & Sons (1988) pp. 139-159.

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-28278