Method for selecting raw material for bleaching clay

Details Method for selecting raw material for bleaching clay Method for selecting raw material for bleaching clay

1998-07-21

2000-07-25

Marcheschi, Michael

Compositions: ceramic

Ceramic compositions

Clay containing

106486, 106488, 502 81, 502 83, 4231181, 4233281, B01J 2116, B01J 2012, C04B 3304

Patent

active

06093669&

ABSTRACT:
A process for making a bleaching clay composition useful for purification of oil is disclosed. The process involves controlled acidification of a palygorskite and smectite clay mineral with sulfuric acid. The clay mineral starting material exhibits, in an aqueous slurry, an electrical conductivity of at least about 50 microSiemens per centimeter.

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patent: 5783511 (1998-07-01), Banin et al.
Banin, A., et al., "Particle Size and Surface Properties of Acidic Montmorillonite," in Proceedings of the International Clay Conference, vol. 1, pp. 669-682, Tokyo, Japan (1969) (no month).
Guggenheim et al., Clays and Clay Minerals 43(2):255-256 (1995) (no month).

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