DOI: 10.1016/j.jcou.2017.12.006
Scopus记录号: 2-s2.0-85037547127
论文题名: Amine-modified SBA-15(P): A promising adsorbent for CO2 capture
作者: Zhang G. ; Zhao P. ; Hao L. ; Xu Y.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 22
结束页码: 33
语种: 英语
英文关键词: Adsorption kinetics
; Amine-modified silica
; CO2 Capture
; in situ FT-IR
; TEPA
Scopus关键词: Adsorbents
; Adsorption
; Fourier transform infrared spectroscopy
; Infrared spectroscopy
; Mesoporous materials
; Reusability
; Silica
; Adsorption kinetics
; CO2 capture
; In-situ FT-IR
; Modified silica
; TEPA
; Carbon dioxide
英文摘要: SBA-15(P) mesoporous material with 2D hexagonal was synthesized as the precursor, then a series of Amine-functionalization SBA-15(p)-xTEPA CO2 adsorbents were prepared by impregnating with TEPA. The adsorbents were characterized using BET, XRD, FTIR, TEM, TGA and In situ IR DRIFTs. Characterization results show that additional impregnated TEPA has a negative effect on the textural properties of adsorbents and additional impregnated TEPA has not change the channel structure of the adsorbent. It also is found that the synergistic effect of TEPA and P123 enhance the initial decomposition temperature and enhance the stability of adsorbent. Compared with SBA-15-60TEPA, SBA-15(p)-60TEPA (SP60T) has better reusability and cyclic performance. After 9 times cycle, the SP60T sorbent still adsorbs around 5.0 mmol/g of CO2 from 20% CO2 in N2 at 75 °C and 1 atm, CO2 adsorption capacity only reduces 7.8%. It is mainly because that the template in carrier makes TEPA evenly dispersed, effectively prevent the TEPA reunion and loss, and improve the utilization ratio of amine. According to adsorption dynamics and inactivation model, CO2 adsorption of SP60T is mainly chemical adsorption. The in situ infrared spectroscopy reveals that CO2 adsorption of SP60T follows anionic and cationic mechanisms. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111953
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, 030024, China; State Key Laboratory of Coal and CBM Co-Mining, Jincheng, 048012, China; School of Material Science & Engineering, Shandong University, Jinan, Shandong 250061, China
Recommended Citation:
Zhang G.,Zhao P.,Hao L.,et al. Amine-modified SBA-15(P): A promising adsorbent for CO2 capture[J]. Journal of CO2 Utilization,2018-01-01,24