초록 ▼

The present invention is a composition, a synthesis of the composition and a method of using the composition for selectively adsorptively separating nitrogen from oxygen wherein the composition is a crystalline EMT with a Si/Al ratio less than 2.0 and a micropore volume determined in the sodium and/

The present invention is a composition, a synthesis of the composition and a method of using the composition for selectively adsorptively separating nitrogen from oxygen wherein the composition is a crystalline EMT with a Si/Al ratio less than 2.0 and a micropore volume determined in the sodium and/or potassium form of at least 0.20 cm3/g and a lithium cation exchange of at least 80%, preferably including an intergrowth with a crystalline FAU structure, wherein the pure or intergrowth compositions have the chemical formula: M2/nO:X2O3:(2.0 to 2 wherein M=one or more metal cations having a valence of n, and X is selected from the group consisting of aluminum, gallium and boron, preferably aluminum.

대표청구항 ▼

A process of adsorptively separating a more strongly adsorbed gas from a less strongly adsorbed gas in a gas mixture containing a more strongly adsorbed gas and a less strongly adsorbed gas, comprising; contacting said gas mixture with a zone of adsorbent containing crystalline metallosilicate compo

A process of adsorptively separating a more strongly adsorbed gas from a less strongly adsorbed gas in a gas mixture containing a more strongly adsorbed gas and a less strongly adsorbed gas, comprising; contacting said gas mixture with a zone of adsorbent containing crystalline metallosilicate composition having an EMT structure with a Si/X ratio of less than 2.0, a micropore volume in the sodium and/or potassium form of at least 0.20 cm3/g and a cation exchange of more than 50% with a cation selected from the group consisting of lithium, calcium and mixtures thereof, wherein X is selected from the group consisting of aluminum, boron and gallium, selectively adsorbing said more strongly adsorbed gas preferentially to said less strongly adsorbed gas, removing a gas containing said less strongly adsorbed gas and depleted in said more strongly adsorbed gas from said zone and separately removing said more strongly adsorbed gas from said adsorbent.