Mixed-cation adsorbent production with single pass ion exchange

Details Mixed-cation adsorbent production with single pass ion exchange Mixed-cation adsorbent production with single pass ion exchange

B - Operations, Transporting

01

J

B01J 20/18 (2006.01) B01J 20/30 (2006.01) B01J 39/14 (2006.01)

Patent

CA 2170788

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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