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Method for purifying hydrogen-based gas mixture

  • US 6,514,317 B2
  • Filed: 04/20/2001
  • Issued: 02/04/2003
  • Est. Priority Date: 04/20/2000
  • Status: Active Grant
First Claim
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1. A method for purifying a hydrogen-based gas mixture comprising the step of contacting said hydrogen-based gas mixture with a zeolite adsorbent;

  • said zeolite adsorbent being a shaped product which is comprised of at least 95%, as determined on the basis of the moisture equilibrium adsorption value, of a low-silica type X zeolite having a SiO2/Al2O3 molar ratio in the range of 1.9 to 2.1, and has an average crush strength of at least 1.0 kgf as measured on particles of said shaped product having a particle diameter in the range of 1.4 to 1.7 mm prepared for crush strength measurement.

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