| 摘要 |
<p>PURPOSE:To obtain the title zeolite having high nitrogen and oxygen selectivity, a high gas diffusion rate, high mechanical strength and high abrasion resistance and capable of efficiently obtaining separated gas of nitrogen or oxygen in high concn. per a unit time and a unit wt. by a PSA method. CONSTITUTION:Granulated matter of sodium A type zeolite is baked and subsequently immersed in an aqueous sodium aluminate solution and the impregnated one is dried to produce gas separating and concentrating zeolite having an absorption peak at 1520cm<-1> of an infrared absorption spectrum.</p> |
