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Process to separate nitrogen and argon from air by application of alkoxide to Zeolite at room temperature and pressure
Process to separate nitrogen and argon from air by application of alkoxide to Zeolite at room temperature and pressure
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机译：通过在室温和压力下将醇盐应用于沸石，从空气中分离出氮气和氩气的方法
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摘要
In a process to make a molecular absorbent molecular sieve medium, the surface pore size of Zeolite (NaA) is modified by the application of alkoxide at room temperature and pressure. The Zeolite A is activated by heating for 3-4 hr at 350 to 450C. The Zeolite A is then cooled in a vacuum of 1 x 10-2 to 1 x 10-4 mm Hg, before flushing with tetra-alkyl orthosilicate in a dry solvent at a concentration of 0.1 to 1.0 % weight by volume for 4 - 8 hr under continuous mixing. At this stage the solvent is recovered for re-use. The resulting Zeolite is dried in air under static conditions and at a temperature of 25 to 35C. The modified Zeolite is heated for 3-8 hr to a temperature of 450 to 600C and then cooled to room temperature under static conditions. After pre-activation by heat at 350 to 450C, the modified Zeolite then absorbs oxygen, nitrogen and argon in a static volumetric system.
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机译：在制备分子吸收性分子筛介质的方法中，通过在室温和压力下施加醇盐来改性沸石（NaA）的表面孔径。通过在350至450℃下加热3-4小时来活化沸石A。然后将沸石A在1 x 10-2至1 x 10-4 mm Hg的真空中冷却，然后在干燥溶剂中用原硅酸四烷基酯以0.1至1.0体积％的浓度冲洗4-8。在连续搅拌下hr。在这一阶段，溶剂被回收以重新使用。将得到的沸石在空气中在静态条件下和在25至35℃的温度下干燥。将改性的沸石加热3-8小时至450至600℃的温度，然后在静态条件下冷却至室温。在350〜450℃加热预活化后，改性沸石在静态体积体系中吸收氧气，氮气和氩气。
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