• Journal of the Chinese Ceramic Society
  • Vol. 51, Issue 9, 2206 (2023)
SHEN Xuehua1,2,*, YAN Feng1,2, WANG Pengju1, XIE Feng1..., SUN Xin1, CHEN Heijin1 and ZHANG Zuotai1,2|Show fewer author(s)
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  • 1[in Chinese]
  • 2[in Chinese]
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    DOI: Cite this Article
    SHEN Xuehua, YAN Feng, WANG Pengju, XIE Feng, SUN Xin, CHEN Heijin, ZHANG Zuotai. Interference Mechanism of H2S on CO2 Adsorption of Aluminum-Based Solid Amine Adsorbent[J]. Journal of the Chinese Ceramic Society, 2023, 51(9): 2206 Copy Citation Text show less

    Abstract

    The interference mechanism of H2S impurity on the CO2 adsorption performance of solid amine adsorbents is still lack of comprehensive research. An aluminum-based solid amine adsorbent (PEI@Al2O3) was prepared with Al2O3 as a support to load polyethyleneimine (PEI), and the influence of H2S on the CO2 adsorption capacity, adsorption rate and cyclic adsorption performance of the adsorbent was investigated. The results show that the competitive adsorption occurs when H2S and CO2 coexist due to H2S and CO2 simultaneously grabbed the active sites of amine groups on the adsorbent. However, the adsorption competitiveness of CO2 is larger than that of H2S under the simulated biogas condition (i.e., 40% CO2+59.5% CH4+0.5% H2S), thus inhibiting H2S adsorption. Furthermore, the optimal adsorption temperature of CO2 and H2S is inconsistent, and the CO2 adsorption capacity and cyclic stability of PEI@Al2O3 are not disturbed by H2S at the optimal adsorption temperature of CO2.
    SHEN Xuehua, YAN Feng, WANG Pengju, XIE Feng, SUN Xin, CHEN Heijin, ZHANG Zuotai. Interference Mechanism of H2S on CO2 Adsorption of Aluminum-Based Solid Amine Adsorbent[J]. Journal of the Chinese Ceramic Society, 2023, 51(9): 2206
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