Process for the removal of iodine and iodine compounds from hydrogen-containing gases and vapors

• US 5,075,084 A
• Filed: 01/10/1990
• Issued: 12/24/1991
• Est. Priority Date: 01/21/1989
• Status: Expired due to Fees

• Current Assignee: Bayer AG, Kernforschungszentrum Karlsruhe GmbH
• Original Assignee: Bayer AG, Kernforschungszentrum Karlsruhe GmbH
• Inventors: Wilhelm, Jurgen, Puppe, Lothar
• Primary Examiner(s): Lewis, Michael
• Assistant Examiner(s): Bolam, Brian M.
• Application Number:
  US07/463,107
• Time in Patent Office: 713 Days
• Field of Search: 423/240 R, 423/240 S, 423/241, 423/245.1, 55/75
• US Class Current: 95/131
• CPC Class Codes: B01D 53/02 by adsorption, e.g. preparative gas chromatography solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01
• CPC Class Codes: G21F 9/02 Treating gases

Abstract

A process for the rapid and effective removal of iodine, organic iodine compounds with a small number of carbon atoms or mixture thereof from gases and/or vapors, comprising passing said gas or vapor through an adsorbent bed containing a silver-lead-exchanged zeolite X.

Claims

1. In a process for the removal of iodine, organic iodine compounds, or mixtures thereof from a gas containing hydrogen and oxygen, said process comprising passing said gas through a bed of sorbent particles and adsorbing the iodine or iodine compounds;

the improvement comprising passing said gas through a bed of granular silver-lead exchanged faujasite structure molecular sieve material having the formula

space="preserve" listing-type="equation">a Na.sub.2 O . b PbO . c Ag.sub.2 O . Al.sub.2 O.sub.3 2.5+0.5 SiO.sub.2

wherein

b=0.05-0.9,

c=0.1-0.95, and

a+b+c=1,

thereby substantially reducing any heating due to hydrogen/oxygen reaction.

2. A process according to claim 1, wherein the granular material is a binder-free granular silver-lead-exchanged molecular sieve material.