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Cobalt Incorporated Porous Aromatic Framework for CO2/CH4 Separation
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-08-02 , DOI: 10.1021/acs.iecr.8b01874 Weichao Zhang 1 , Yuanhui Cheng 1 , Chunshuai Guo 1 , Chengpeng Xie 1 , Zhonghua Xiang 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-08-02 , DOI: 10.1021/acs.iecr.8b01874 Weichao Zhang 1 , Yuanhui Cheng 1 , Chunshuai Guo 1 , Chengpeng Xie 1 , Zhonghua Xiang 1
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Natural gas decarburization is an important issue as CO2 reduces its energy density and corrodes equipment with humidity. Here, we used PAF-1 as pours platform and derived PAF-1-SO3Co as an efficient and stable CO2/CH4 separation material by introducing cobalt sulfonate groups. Particularly, transition metal cobalt owns rich d-electron orbit and interacts with polar molecules evidently, which is suitable for improving the interaction between polar adsorbate and adsorbent. The experiment results further demonstrate this rule and show that the selectivity of PAF-1-SO3Co reaches 14.27 at 298 K and 1 bar, which has increased almost 5 times than PAF-1. Importantly, PAF-1-SO3Co exhibits remarkably high regenerability (75%) and sorbent selection parameter (S, 85.8). Moreover, PAF-1-SO3Co has dramatically high working stability, whose adsorption performance shows ignorable decrease after soaking in simulated acidic environment even for 1 week. Accordingly, PAF-1-SO3Co is a promising adsorbent for separation and purification of CO2 from natural gas.
中文翻译：
Cobalt Incorporated用于CO 2 / CH 4分离的多孔芳香框架
天然气脱碳是一个重要的问题，因为CO 2会降低其能量密度并因湿度腐蚀设备。在这里，我们使用PAF-1作为浇注平台，并通过引入磺酸钴基团衍生出PAF-1-SO 3 Co作为高效，稳定的CO 2 / CH 4分离材料。特别地，过渡金属钴具有丰富的d-电子轨道并且明显地与极性分子相互作用，这适合于改善极性被吸附物与吸附剂之间的相互作用。实验结果进一步证明了这一规律，表明PAF-1-SO 3 Co在298 K和1 bar下的选择性达到14.27，几乎是PAF-1的5倍。重要的是，PAF-1-SO 3Co具有极高的可再生性（75％）和吸附剂选择参数（S，85.8）。此外，PAF-1-SO 3 Co具有极高的工作稳定性，即使在模拟的酸性环境中浸泡1周，其吸附性能也会明显降低。因此，PAF-1-SO 3 Co是用于从天然气中分离和纯化CO 2的有前途的吸附剂。
更新日期：2018-08-02
中文翻译：
Cobalt Incorporated用于CO 2 / CH 4分离的多孔芳香框架
天然气脱碳是一个重要的问题，因为CO 2会降低其能量密度并因湿度腐蚀设备。在这里，我们使用PAF-1作为浇注平台，并通过引入磺酸钴基团衍生出PAF-1-SO 3 Co作为高效，稳定的CO 2 / CH 4分离材料。特别地，过渡金属钴具有丰富的d-电子轨道并且明显地与极性分子相互作用，这适合于改善极性被吸附物与吸附剂之间的相互作用。实验结果进一步证明了这一规律，表明PAF-1-SO 3 Co在298 K和1 bar下的选择性达到14.27，几乎是PAF-1的5倍。重要的是，PAF-1-SO 3Co具有极高的可再生性（75％）和吸附剂选择参数（S，85.8）。此外，PAF-1-SO 3 Co具有极高的工作稳定性，即使在模拟的酸性环境中浸泡1周，其吸附性能也会明显降低。因此，PAF-1-SO 3 Co是用于从天然气中分离和纯化CO 2的有前途的吸附剂。
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