New Insights on CO2-Methane Separation Using LTA Zeolites with Different Si/Al Ratios and a First Comparison with MOFs
New Insights on CO2-Methane Separation Using LTA Zeolites with Different Si/Al Ratios and a First Comparison with MOFs
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DOI：
10.1021/la9026656
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发表时间：
2010-02-02
期刊：
影响因子：
3.9
通讯作者：
Valencia, Susana
中科院分区：
文献类型：
--
作者：
Palomino, Miguel;Corma, Avelino;Valencia, Susana
通过控制骨架中的At含量，可以合成具有可剪裁吸附性能的LTA分子筛。在这项工作中，我们证明了在能量相关的CO2/CH4分离过程中，通过调节沸石吸附剂的极性来优化其热力学吸附性能是可能的。根据纯气体在不同压力和温度下的吸附等温线以及CO2/CH4混合物的穿透分离实验，进行了热力学研究，并与文献报道的石油MOF结果进行了比较。得到的分离值使我们得出结论，LTA沸石为从天然气中提炼甲烷提供了独特的可能性。
LTA zeolites can be synthesized with tailored adsorption properties by controlling the At content in the framework. In this work, we have demonstrated that it is possible to adjust the polarity of the zeolitic adsorbent to optimize its thermodynamic adsorption properties for the energetically relevant CO2/CH4 Separation process. The thermodynamic study has been made from the corresponding adsorption isotherms of the pure gases carried out at different pressures and temperatures, as well as breakthrough separation experiments of CO2/CH4 mixtures and the results were compared to those reported oil MOFs. The separation values obtained allow us to conclude that LTA zeolites offer unique possibilities for CH4 upgrading from natural gas.