Process for modifying clinoptilolite adsorbent
First Claim
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sodium cations until at least about 40% of the ion-exchangeable non-sodium cations in the clinoptilolite have been replaced by sodium cations, thereby producing a sodium clinoptilolite, and thereafter subjecting said sodium clinoptilolite to ion-exchange with a solution containing any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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Abstract
Clinoptilolites, including both natural and synthetic clinoptilolites which have been ion-exchanged with metal cations such as lithium, sodium, potassium, calcium, magnesium, barium, strontiun, zinc, copper, cobalt, iron and manganese, are useful for the removal of traces of ammonia from streams of hydrocarbons having kinetic diameters of not more than about 5 Å. This invention relates to the process of producing the modified clinoptilolite adsorbent.
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4 Claims
- 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sodium cations until at least about 40% of the ion-exchangeable non-sodium cations in the clinoptilolite have been replaced by sodium cations, thereby producing a sodium clinoptilolite, and thereafter subjecting said sodium clinoptilolite to ion-exchange with a solution containing any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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