Uop Lcc

Amedeo Napolitano

John D Sherman

Gregory John Lewis

Robert L Bedard

David S Bem

E Alejandro Leon-Escamilla

Santi Kulprathipanja

John Markovs

For the removal of trace quantities of iodine-containing contaminants from corrosive liquid feed streams, an adsorbent with distinct advantages over prior-art materials is provided. The treatment method involves the use of a suitable, silica-rich zeolite which has been cation-exchanged with an iodine-reactive metal. This inorganic adsorbent may be used in unbound form, or it can bound with a substantially insoluble porous inorganic refractory metal oxide binder. Reactivation and regeneration techniques, which are generally incompatible with prior-art adsorbent materials, are also disclosed.

Method for treating a liquid stream contaminated with an iodine-containing compound using a cation-exchanged zeolite

A new family of crystalline molecular sieves have been synthesized. These compositions have a microporous structure of ZrO.sub.3 octahedral units, and at least one of SiO.sub.2 tetrahedral units and GeO.sub.2 tetrahedral units. Optionally, the molecular sieves contain M metals such as titanium, niobium, or tin. These novel molecular sieves are prepared hydrothermally from a reaction mixture composed of reactive sources of the components. Additionally, these molecular sieves are useful for the selective adsorption of ammonium ions.

Zirconium silicate and zirconium germanate molecular sieves and process

A new family of crystalline molecular sieves have been synthesized. These compositions have a microporous structure of at least ZrO.sub.3 octahedral units and SiO.sub.2 tetrahedral units. Optionally, the molecular sieves contain M metals such as titanium or tin. These novel molecular sieves are prepared hydrothermally from a reaction mixture composed of reactive sources of the components. Additionally, these molecular sieves are useful for the selective adsorption of ammonium ions.

Zirconium silicate molecular sieves and process using the same

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Amedeo Napolitano