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作者:

Wu, Kai (Wu, Kai.) | Ye, Qing (Ye, Qing.) | Wang, Lanyang (Wang, Lanyang.) | Meng, Fanwei (Meng, Fanwei.) | Dai, Hongxing (Dai, Hongxing.) (学者:戴洪兴)

收录:

EI Scopus SCIE

摘要:

The SBA-15-supported polyethyleneimine (PEI)-modified layered double hydroxides (xLDH-yPEI/SBA-15) were prepared by the in situ coprecipitation method, and their CO2 adsorption performance and involved mechanisms were studied. After loading of PEI and LDH on the surface of SBA-15, the composite materials still maintained an ordered two-dimensional hexagonal porous structure. The optimal CO2 adsorption capacity (2.01 mmol/g) of 40LDH-2PEI/SBA-15 at 50 C was 1.88 times larger than that (1.07 mmol/g) of SBA-15. Such an excellent CO2 adsorption capacity of 40LDH-2PEI/SBA-15 was associated with its high BET surface area, abundant basic sites, and fast adsorption kinetics. The regeneration efficiency of 40LDH-2PEI/SBA-15 was still 94% after 11 recycles. We are sure that the SBA-15-supported PEI-modified LDH materials are good performance adsorbents for the adsorption of carbon dioxide.

关键词:

Adsorption mechanism Carbon dioxide adsorption Layered double hydroxide Two-dimensional ordered mesoporous silica Polyethyleneimine

作者机构:

  • [ 1 ] [Wu, Kai]Beijing Univ Technol, Fac Environm & Life, Sch Environm & Chem Engn, Dept Environm Sci,Key Lab Beijing Reg Air Pollut C, Beijing 100124, Peoples R China
  • [ 2 ] [Ye, Qing]Beijing Univ Technol, Fac Environm & Life, Sch Environm & Chem Engn, Dept Environm Sci,Key Lab Beijing Reg Air Pollut C, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Lanyang]Beijing Univ Technol, Fac Environm & Life, Sch Environm & Chem Engn, Dept Environm Sci,Key Lab Beijing Reg Air Pollut C, Beijing 100124, Peoples R China
  • [ 4 ] [Meng, Fanwei]Beijing Univ Technol, Fac Environm & Life, Sch Environm & Chem Engn, Dept Environm Sci,Key Lab Beijing Reg Air Pollut C, Beijing 100124, Peoples R China
  • [ 5 ] [Dai, Hongxing]Beijing Univ Technol, Fac Environm & Life, Sch Environm & Chem Engn, Dept Environm Chem Engn,Educ Minist China,Lab Cata, Beijing 100124, Peoples R China

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来源 :

APPLIED CLAY SCIENCE

ISSN: 0169-1317

年份: 2022

卷: 229

5 . 6

JCR@2022

5 . 6 0 0

JCR@2022

ESI学科: GEOSCIENCES;

ESI高被引阀值:38

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 11

SCOPUS被引频次: 12

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

近30日浏览量: 2

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