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[期刊论文]

Various morphologies of clinoptilolites synthesized in alcohol-solvent hydrothermal system and their selective adsorption of CH4 and N-2

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作者:

Wang, Yingqian (Wang, Yingqian.) | Sun, Jihong (Sun, Jihong.) (学者:孙继红) | Munir, Tallat (Munir, Tallat.) | 展开

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EI Scopus SCIE

摘要:

Clinoptilolite (CP) with various morphologies, such as spherical, flower, cylindrical, and disc-shape, were successfully synthesized in the presence of alcohol solvents with different carbon chain lengths. The structural and textural properties of the resultant CPs were characterized via XRD, SEM, TG-DSC profiles, TEM, NMR, FT-IR spectra, and N-2 sorption isotherms. The effect of the additive amount of various alcohol solvents on the induction (nucleation) periods and growth stages of synthetic CPs were detailed investigated. Their activation energies of induction (E-n) and growth (E-g) periods during crystallization intervals were calculated according to the Arrhenius equation, where the former being larger than the latter, indicating that nucleation is the key step during the whole synthesis of CPs. Particularly, the E-n value gradually increased as the increasing chain-length of the used alcohol, but smaller than that without additive alcohols. These demonstrations implied that the presence of alcohol solvents is beneficial to promote the nucleation process of synthetic CP. Furthermore, their CH4 and N-2 adsorption capacity and selectivity were preliminary explored, showing the highest selective factor of 5.58 at 0 degrees C for CH4/N-2 separation using flower-like CP as an adsorbent. These results suggested a promising adsorbent for wide applications in gas separation.

关键词:

CH4/N-2 separation Alcohol effects Hydrothermal synthesis Activation energy Clinoptilolites

作者机构:

  • [ 1 ] [Wang, Yingqian]Beijing Univ Technol, Dept Environm & Chem Engn, Beijing Key Lab Green Catalysis & Separat, 100 PingLeYuan, Beijing 100124, Peoples R China
  • [ 2 ] [Sun, Jihong]Beijing Univ Technol, Dept Environm & Chem Engn, Beijing Key Lab Green Catalysis & Separat, 100 PingLeYuan, Beijing 100124, Peoples R China
  • [ 3 ] [Munir, Tallat]Beijing Univ Technol, Dept Environm & Chem Engn, Beijing Key Lab Green Catalysis & Separat, 100 PingLeYuan, Beijing 100124, Peoples R China
  • [ 4 ] [Jia, Bingying]Beijing Univ Technol, Dept Environm & Chem Engn, Beijing Key Lab Green Catalysis & Separat, 100 PingLeYuan, Beijing 100124, Peoples R China
  • [ 5 ] [Gul, Anadil]Beijing Univ Technol, Dept Environm & Chem Engn, Beijing Key Lab Green Catalysis & Separat, 100 PingLeYuan, Beijing 100124, Peoples R China

通讯作者信息:

  • 孙继红

    [Sun, Jihong]Beijing Univ Technol, Dept Environm & Chem Engn, Beijing Key Lab Green Catalysis & Separat, 100 PingLeYuan, Beijing 100124, Peoples R China

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来源 :

MICROPOROUS AND MESOPOROUS MATERIALS

ISSN: 1387-1811

年份: 2021

卷: 323

5 . 2 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:116

JCR分区:1

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 7

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