Self-assembled iron-containing mordenite monolith for carbon dioxide sieving

doi:10.1126/science.aax5776

GSTDTAP > 气候变化

DOI	10.1126/science.aax5776
	Self-assembled iron-containing mordenite monolith for carbon dioxide sieving
	Yu Zhou; Jianlin Zhang; Lei Wang; Xili Cui; Xiaoling Liu; Sie Shing Wong; Hua An; Ning Yan; Jingyan Xie; Cong Yu; Peixin Zhang; Yonghua Du; Shibo Xi; Lirong Zheng; Xingzhong Cao; Yajing Wu; Yingxia Wang; Chongqing Wang; Haimeng Wen; Lei Chen; Huabin Xing; Jun Wang
	2021-07-16
发表期刊	Science
出版年	2021
英文摘要	The separation of gas molecules with physisorbents can be challenging because there is often a tradeoff between capacity and selectivity. Zhou et al. report a template-free hydrothermal synthesis of the one-dimensional channel zeolite mordenite, in which some silicon was replaced by iron. Rather than forming a powder that requires further shaping, this mechanically stable material self-assembled into monoliths. Iron atoms bound in tetrahedral zeolite sites narrowed the channels and enabled the size-exclusion separation of carbon dioxide (CO2) over nitrogen (N2) and methane. High CO2 uptake and highly efficient CO2–N2 separation was demonstrated for both dry and humid conditions. Science , aax5776, this issue p. [315][1] The development of low-cost, efficient physisorbents is essential for gas adsorption and separation; however, the intrinsic tradeoff between capacity and selectivity, as well as the unavoidable shaping procedures of conventional powder sorbents, greatly limits their practical separation efficiency. Herein, an exceedingly stable iron-containing mordenite zeolite monolith with a pore system of precisely narrowed microchannels was self-assembled using a one-pot template- and binder-free process. Iron-containing mordenite monoliths that could be used directly for industrial application afforded record-high volumetric carbon dioxide uptakes (293 and 219 cubic centimeters of carbon dioxide per cubic centimeter of material at 273 and 298 K, respectively, at 1 bar pressure); excellent size-exclusive molecular sieving of carbon dioxide over argon, nitrogen, and methane; stable recyclability; and good moisture resistance capability. Column breakthrough experiments and process simulation further visualized the high separation efficiency. [1]: /lookup/doi/10.1126/science.aax5776
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/334381
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Yu Zhou,Jianlin Zhang,Lei Wang,et al. Self-assembled iron-containing mordenite monolith for carbon dioxide sieving[J]. Science,2021.
APA	Yu Zhou.,Jianlin Zhang.,Lei Wang.,Xili Cui.,Xiaoling Liu.,...&Jun Wang.(2021).Self-assembled iron-containing mordenite monolith for carbon dioxide sieving.Science.
MLA	Yu Zhou,et al."Self-assembled iron-containing mordenite monolith for carbon dioxide sieving".Science (2021).