B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 20/08 (2006.01) B01J 20/16 (2006.01) B01J 20/32 (2006.01)
Patent
CA 2085485
The invention relates to alumina-containing acid adsorbents and process for producing same. Activated alumina has been used as an acid adsorbent, but it is not very long-lived. The adsorbents of the invention comprise activated alumina having inter- nal pores and an amorphous alkali (preferably sodium) aluminum silicate coating the inner surfaces of the pores. The ratio of Si:Al in the amorphous alkali material is preferably 0.25-100:1 by weight. A process for producing such adsorbents comprises treating activated alumina with a solution of an alkali metal silicate followed by an alkali metal aluminate, and forming agglom- erates of the treated alumina at a temperature below about 90 °C, aging the agglomerates at a temperature in the range of 20 - 90 °C, and calcining the aged agglomerates at a temperature in the range of 200 - 500 °C. The adsorbent can be used to remove acid- ic materials from gases and liquids during industrial processes and they have a greater effective life than activated alumina itself.
Etchart Claude Pierre
Lever Gordon
Tahiani Francoise
Alcan International Limited
Kirby Eades Gale Baker
LandOfFree
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