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Epoxide-Functionalized, Poly(ethylenimine)-Confined Silica/Polymer Module Affording Sustainable CO2 Capture in Rapid Thermal Swing Adsorption
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-10-12 , DOI: 10.1021/acs.iecr.8b01388 Sunghyun Park 1, 2 , Jongsik Kim 1 , Young-June Won 3 , Chaehoon Kim 4 , Minkee Choi 4 , Wonho Jung 3 , Kwang Soon Lee 3 , Jeong-Geol Na 3 , So-Hye Cho 1 , Seung Yong Lee 1 , Jong Suk Lee 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-10-12 , DOI: 10.1021/acs.iecr.8b01388 Sunghyun Park 1, 2 , Jongsik Kim 1 , Young-June Won 3 , Chaehoon Kim 4 , Minkee Choi 4 , Wonho Jung 3 , Kwang Soon Lee 3 , Jeong-Geol Na 3 , So-Hye Cho 1 , Seung Yong Lee 1 , Jong Suk Lee 3
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Creating a module that achieves sustainable CO2 capture while being compatible with the existing industry is paramount in overcoming the current CO2-driven environmental issues. This paper presents the fabrication of hollow fiber sorbents (HFSs) and their respective modules to capture CO2 by the rapid thermal swing adsorption process (RTSA). Poly(amide-imide) (PAI)/microspheric SiO2 composites were fabricated with a so-called “sieve-in-a-cage” microarchitecture which promotes CO2 diffusion. More importantly, a selected amount of 1,2-epoxybutane (EB)-functionalized poly(ethylenimine) (PEI), denoted as 0.37EB-PEI, was incorporated into our PAI/SiO2 composites forming PAI/SiO2/0.37EB-PEI HFSs which enhanced the thermal stability with a moderate CO2 sorption uptake of 0.88 mmol CO2 g–1. The resulting HFSs were assembled into a module using either stainless steel (SS) or poly(tetrafluoroethylene) (PTFE), and their respective CO2-capturing performances in the RTSA process were compared. The two modules had a comparable breakthrough CO2 capacity of 0.42 mmol CO2 g–1 for a wet feed mixture of CO2/He/N2 (14 mol/14 mol/72 mol) (RH 100%) and a comparable CO2 desorption efficiency (i.e., 95% desorption within 2 min) under 100% CO2 at 120 °C due to the presence of the 0.37EB-PEI; however, different thermal properties inherent to the modular materials caused the PTFE-based module to outperform the SS-based counterpart in terms of cooling, enabling the execution of an entire RTSA cycle within 8 min. Additionally, the PAI/SiO2/0.37EB-PEI/PTFE module maintained its breakthrough capacity of 0.42 mmol CO2 g–1 over five consecutive RTSA cycles, confirming its good long-term stability as well.
中文翻译：
环氧功能化，聚乙烯亚胺受限的二氧化硅/聚合物模块，可承受快速热摆动吸附中可持续的CO 2捕集
创建一个可实现可持续的CO 2捕集并与现有行业兼容的模块，对于克服当前由CO 2驱动的环境问题至关重要。本文介绍了中空纤维吸附剂（HFS）的制造及其各自的模块，以通过快速热变吸附工艺（RTSA）捕获CO 2。聚（酰胺-酰亚胺）（PAI）/微球SiO 2复合材料是用一种能促进CO 2扩散的所谓“笼中筛”微结构制造的。更重要的是，将一定量的1,2-环氧丁烷（EB）-官能化的聚（乙烯亚胺）（PEI）表示为0.37EB-PEI，并已添加到我们的PAI / SiO 2中形成PAI / SiO 2 /0.37EB-PEI HFS的复合材料，以0.88 mmol CO 2 g –1的适度CO 2吸收吸收增强了热稳定性。使用不锈钢（SS）或聚四氟乙烯（PTFE）将所得的HFS组装到模块中，并比较了它们在RTSA工艺中各自捕获CO 2的性能。对于CO 2 / He / N 2（14 mol / 14 mol / 72 mol）（RH 100％）的湿进料混合物，这两个模块的CO 2突破能力为0.42 mmol CO 2 g –1 2个由于存在0.37EB-PEI，在120 ％100％CO 2下的解吸效率（即2分钟内95％的解吸）；但是，模块化材料固有的不同热性能导致PTFE基模块在冷却方面优于SS基模块，从而可以在8分钟内执行整个RTSA周期。另外，PAI / SiO 2 /0.37EB-PEI/PTFE模块在五个连续的RTSA循环中保持了0.42 mmol CO 2 g –1的突破能力，这也证实了其良好的长期稳定性。
更新日期：2018-10-14
中文翻译：
环氧功能化，聚乙烯亚胺受限的二氧化硅/聚合物模块，可承受快速热摆动吸附中可持续的CO 2捕集
创建一个可实现可持续的CO 2捕集并与现有行业兼容的模块，对于克服当前由CO 2驱动的环境问题至关重要。本文介绍了中空纤维吸附剂（HFS）的制造及其各自的模块，以通过快速热变吸附工艺（RTSA）捕获CO 2。聚（酰胺-酰亚胺）（PAI）/微球SiO 2复合材料是用一种能促进CO 2扩散的所谓“笼中筛”微结构制造的。更重要的是，将一定量的1,2-环氧丁烷（EB）-官能化的聚（乙烯亚胺）（PEI）表示为0.37EB-PEI，并已添加到我们的PAI / SiO 2中形成PAI / SiO 2 /0.37EB-PEI HFS的复合材料，以0.88 mmol CO 2 g –1的适度CO 2吸收吸收增强了热稳定性。使用不锈钢（SS）或聚四氟乙烯（PTFE）将所得的HFS组装到模块中，并比较了它们在RTSA工艺中各自捕获CO 2的性能。对于CO 2 / He / N 2（14 mol / 14 mol / 72 mol）（RH 100％）的湿进料混合物，这两个模块的CO 2突破能力为0.42 mmol CO 2 g –1 2个由于存在0.37EB-PEI，在120 ％100％CO 2下的解吸效率（即2分钟内95％的解吸）；但是，模块化材料固有的不同热性能导致PTFE基模块在冷却方面优于SS基模块，从而可以在8分钟内执行整个RTSA周期。另外，PAI / SiO 2 /0.37EB-PEI/PTFE模块在五个连续的RTSA循环中保持了0.42 mmol CO 2 g –1的突破能力，这也证实了其良好的长期稳定性。
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