| CPC B01J 20/18 (2013.01) [B01J 20/0207 (2013.01); B01J 20/0211 (2013.01); B01J 20/0218 (2013.01); B01J 20/0222 (2013.01); B01J 20/0225 (2013.01); B01J 20/0248 (2013.01); B01J 20/0251 (2013.01); B01J 20/0292 (2013.01); B01J 20/2808 (2013.01)] | 15 Claims |

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1. A material for separating and pumping oxygen, the material comprising a synthetic aluminophosphate zeolite doped/substituted with a chemical element hafnium at an ion location within a framework of the zeolite.
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