金属离子改性分子筛的制备及其吸附羰基硫性能研究
Preparation of Metal Ion Modified Molecular Sieve and Its Adsorption Performance of Carbonyl Sulfide
DOI: 10.12677/AMC.2022.102007, PDF,    科研立项经费支持
作者: 穆新伟：湖北民族大学化学与环境工程学院，湖北 恩施
关键词: 羰基硫；分子筛；吸附剂；金属离子改性；Carbonyl Sulfide； Molecular Sieve； Adsorbent； Metal Ion-Modified
摘要: 羰基硫(COS)由于浓度较低难以脱除，所以想要降低工业废气中的总硫含量，寻找一种脱除低浓度的羰基硫的吸附剂就成为了关键。本文通过离子交换的方法将五种金属离子负载到微孔NaY分子筛上，并且通过COS吸附测试结果表明，所制备的CuY和CeY分子筛相比其他金属分子筛具有更高的COS吸附量，穿透吸附量较NaY分子筛的2.88倍。并且CuY分子筛COS穿透吸附量循环5次仍可以达到新鲜CuY分子筛的70%。在200℃时吸附COS，此时的CuY分子筛穿透吸附量为NaY的5.99倍。说明金属离子改性分子筛可以增强COS吸附量，具有较大的应用潜力。
Abstract: Carbonyl sulfide (COS) is difficult to remove due to its low concentration. Therefore, in order to reduce the total sulfur content in industrial waste gas, it is critical to find an adsorbent for the removal of low-concentration carbonyl sulfide. In this paper, five kinds of metal ions were loaded on the microporous NaY molecular sieve by ion exchange method, and the results of COS adsorption test showed that the prepared CuY and CeY molecular sieves had higher COS adsorption capacity than other metal molecular sieves. The permeable adsorption capacity is 2.88 times higher than that of the NaY molecular sieve. And CuY molecular sieve COS breakthrough adsorption capacity can still reach 70% of fresh CuY molecular sieve after 5 cycles. At 200˚C, COS was adsorbed, and the penetration adsorption capacity of CuY molecular sieve at this time was 5.99 times that of NaY. It shows that the metal ion modified molecular sieve can enhance the adsorption capacity of COS and has great application potential.
文章引用：穆新伟. 金属离子改性分子筛的制备及其吸附羰基硫性能研究[J]. 材料化学前沿, 2022, 10(2): 43-52. https://doi.org/10.12677/AMC.2022.102007

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