Nitrogen-selective zeolitic adsorbent for use in air...

Details Nitrogen-selective zeolitic adsorbent for use in air... Nitrogen-selective zeolitic adsorbent for use in air...

B - Operations, Transporting

01

J

B01J 29/08 (2006.01) B01D 53/047 (2006.01) B01J 20/18 (2006.01)

Patent

CA 2157461

In using calcium-exchanged forms of zeolite X as selective adsorbents for nitrogen in PSA air separation process, it has been discovered that, particularly under certain temperature and pressure conditions, superior performance is not, as is generally believed, obtained when the calcium content is at a maximum, but rather when the degree of calcium exchange is in the range of 60 to 89 equivalent percent and only when the framework Si/Al2 ratio of the zeolite is within the range of 2.0 to 2.4

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