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Cu-BTC-based composite adsorbents for selective adsorption of CO2 from syngas

Zhang, Yan; Wibowo, Haryo; Zhong, Li; Horttanainen, Mika; Wang, Zunbo; Yu, Caimeng; Yan, Mi (2021-09-03)

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zhang_et_al_cu-btc-based_final_draft.pdf (3.076Mb)
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Post-print / Final draft

Zhang, Yan
Wibowo, Haryo
Zhong, Li
Horttanainen, Mika
Wang, Zunbo
Yu, Caimeng
Yan, Mi
03.09.2021

Separation and Purification Technology

279

Elsevier

School of Energy Systems

https://doi.org/10.1016/j.seppur.2021.119644
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2021092747177

Tiivistelmä

High CO2 content exists in the raw syngas produced from supercritical water gasification of food waste, CO2 removal to improve quality of the syngas is necessary before further utilization. In this study, Cu-BTC, Mg/Cu-BTC, Cu-BTC@MWCNT, and Mg/Cu-BTC@MWCNT were synthesized and characterized as CO2 adsorbents. The adsorption experiments were conducted to investigate the optimal adsorbent and adsorption conditions. The results indicated that Mg2+ and multi-walled carbon nanotubes (MWCNT) doped into Cu-BTC influenced the physical properties of adsorbents. Among of all studied adsorbents, Mg/Cu-BTC@MWCNT had the maximum CO2 adsorption capacity (3.63 mmol/g) and selectivity (14.28) at 25 °C and 100 kPa. Analysis of variance (ANOVA) exhibited that adsorption pressure had significant effects on CO2 adsorption capacity of Mg/Cu-BTC@MWCNT. The influences of different operating parameters on CO2 adsorption capacity and selectivity were discussed in Mg/Cu-BTC@MWCNT. The adsorption isotherms of gas components on Mg/Cu-BTC@MWCNT can be sorted as follows: CO2 > CO > CH4 > H2. In additional, the regeneration experiment with 5 times was conducted and the result showed that Mg/Cu-BTC@MWCNT has high stability.

Lähdeviite

Zhang, Y., Wibowo, H., Zhong, L., Horttanainen, M., Wang, Z., Yu, C., Yan, M. (2021). Cu-BTC-based composite adsorbents for selective adsorption of CO2 from syngas. Separation and Purification Technology, vol. 279. DOI: 10.1016/j.seppur.2021.119644

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