A sustainable carbon-consuming cycle based on sequential activation of CO2 and CH4 using metal oxides

Kwon, Seungdon; Yang, Hyogeun; Yu, Yang; Choi, Yuyeol; Kim, Nagyeong; Kim, Gye Hong; Ko, Kyoung Chul; Na, Kyungsu

doi:10.1016/j.apcatb.2023.123120

Cited by 4 publications

(1 citation statement)

References 41 publications

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“…Different from the solvent adsorption process, the usage of solid adsorbents has the advantages of simple preparation, low cost, and environmental friendliness, which have been considered promising alternative methods for the effective removal of CO 2 . Up to now, a variety of porous materials, including metal oxides [11][12][13], mesoporous silica [14,15], activated carbon [16][17][18][19], porous organic polymers (POPs) [20][21][22][23][24][25][26][27][28], metal organic frameworks (MOFs) [29][30][31], and natural zeolites [32,33] has been prepared for the separation of CO 2 from mixed gases such as biogas and natural gas, showing enhanced capture performance. With widespread attention from the scientific and industrial communities, the design and preparation of adsorbent materials with higher adsorption capacity and lower costs have become the focus direction of solid adsorbent research at present.…”

Section: Introductionmentioning

confidence: 99%

Rational Fabrication of Benzene-Linked Porous Polymers for Selective CO2 Capture

Yan,

Zhai,

Sun

et al. 2023

Separations

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Various porous polymer materials have been prepared for the separation of CO2 from mixed gases. However, complex processes, expensive monomers, and costly catalysts are commonly used for their synthesis, making the adsorbents difficult to achieve in industrial applications. Herein, we developed a strategy to fabricate a series of benzene rings containing porous polymer materials (B-PPMs) via a facile condensation reaction of two inexpensive monomers, namely tetraphenylsilane and 1,4-bis(bromomethyl)benzene. The B-PPMs are verified to have accessible surface areas, large pore volumes, and appreciate pore sizes via a series of characterizations. The B-PPM-2 exhibits the best CO2 adsorption amount of 67 cm3·g−1 at 273 K and 1 bar, while the CO2/N2 selectivity can reach 64.5 and 51.9 at 273 K and 298 K, respectively. Furthermore, the adsorbent B-PPM-2 can be completely regenerated after five cycles of breakthrough experiments under mild conditions, which may provide promising candidates for selective capture of CO2 from mixtures.

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