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作者:

Wan, Chunlei (Wan, Chunlei.) | Cui, Xueqing (Cui, Xueqing.) | Liu, Ming (Liu, Ming.) | Xu, Bang (Xu, Bang.) | Sun, Jihong (Sun, Jihong.) (学者:孙继红) | Bai, Shiyang (Bai, Shiyang.)

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Scopus SCIE

摘要:

Fe(III)-modified clinoptilolites (Fe-CPs) were prepared by hydrothermal treatment. The collapse of the heulandite skeletons was avoided by adjusting the pH value using HCl solution, showing the maximum relative crystallinity of the Fe-CPs at an optimal pH of 1.3. The competitive exchange performances between Fe3+ ions and H+ with Na+ (and K+) suggested that the exchange sites were more easily occupied by H+. Various characterizations verified that the hydrothermal treatments had a strong influence on the dispersion and morphology of the isolated and clustered Fe species. The high catalytic activity of the oxygen evolution reaction indicated the insertion of Fe3+ into the skeletons and the occurrences of isomorphic substitution. The fractal evolutions revealed that hydrothermal treatments with the increase of Fe content strongly affected the morphologies of Fe species with rough and disordered surfaces. Meanwhile, the Fe(III)-modified performances of the CPs were systematically investigated, showing that the maximum Fe-exchange capacity was up to 10.6 mg/g. Their thermodynamic parameters and kinetic performances suggested that the Fe(III)-modified procedures belonged to spontaneous, endothermic, and entropy-increasing behaviors. Finally, their adsorption capacities of CO2 at 273 and 298 K were preliminarily evaluated, showing high CO2 adsorption capacity (up to 1.67 mmol/g at 273 K).

关键词:

clinoptilolite adsorptive separations isomorphous substitution Fe species extra-framework Fe fractal structures

作者机构:

  • [ 1 ] [Wan, Chunlei]Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 2 ] [Cui, Xueqing]Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 3 ] [Liu, Ming]Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 4 ] [Xu, Bang]Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 5 ] [Sun, Jihong]Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 6 ] [Bai, Shiyang]Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China

通讯作者信息:

  • [Xu, Bang]Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China;;[Sun, Jihong]Beijing Univ Technol, Dept Chem & Chem Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China;;

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来源 :

MOLECULES

年份: 2023

期: 7

卷: 28

4 . 6 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:20

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SCOPUS被引频次: 3

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