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Process for modifying clinoptilolite adsorbent

  • US 5,116,793 A
  • Filed: 04/24/1991
  • Issued: 05/26/1992
  • Est. Priority Date: 06/14/1988
  • Status: Expired due to Term
First Claim
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1. A process for the production of a modified clinoptilolite from natural or synthetic clinoptilolite wherein at least about 40% of the ion-exchangeable cations in the clinoptilolite comprise any one or more of lithium, potassium, calcium, magnesium, barium, strontium, zinc, copper, cobalt, iron and manganese cations, said process comprising subjecting a clinoptilolite to ion-exchange with a solution containing sodium cations until at least about 40% of the ion-exchangeable non-sodium cations in the clinoptilolite have been replaced by sodium cations, thereby producing a sodium clinoptilolite, and thereafter subjecting said sodium clinoptilolite to ion-exchange with a solution containing any one or more of lithium, potassium, calcium, magnesium, barium, strontium, zinc, copper, cobalt, iron and manganese cations.

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