Adsorbent production with single pass ion exchange

Details Adsorbent production with single pass ion exchange Adsorbent production with single pass ion exchange

1997-04-24

1999-09-28

Lewis, Michael

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

And additional al or si containing component

502 60, 502 79, 502 11, B01J 2906

Patent

active

059588179

ABSTRACT:
An improved process for production of mixed cation-exchanged adsorbents that involves a single pass ion exchange. The precursor (non-exchanged) zeolite is treated with a combined essentially stoichiometric and excess solution of desirable weakly held and strongly held cations so that the resultant zeolite has the required mixed cation composition, while consuming smaller amounts of weakly held cation. Ion exchange post-treatment includes an optional equilibration step to ensure a uniform adsorbent and an optional washing step.

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F. B. Martinola, Lewatit-WS-Process a Highly Reliable Counter-Current System for Ion Exchange and Adsorption, Int Water Conf., 39th Annu Meet, Proc. Pittsburgh, PA Oct. 31-Nov. 2, 1978 (abstract only considered).
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