| Autor: |
Zhelin Su, Mingxian Duan, Yeshuang Wang, Huiling Fan, Zhen Tian, Zhaohui Chen, Chao Yang, Ju Shangguan |
| Předmět: |
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| Zdroj: |
Resources Chemicals & Materials; Jun2023, Vol. 2 Issue 2, p143-150, 8p |
| Abstrakt: |
Amine modification is an effective strategy to improve the H 2 S removal performance of Cu-BTC. In order to avoid the problem of pore blockage after amine modification in post synthesis impregnation, herein a series of Cu-BTC modified with organic amine adsorbents were prepared via an in-situ one-pot method and the H 2 S removal performance under ambient conditions was tested. It is found that the introduced organic amines, depending on the types of amine selected, have a significant influence on the growth of Cu-BTC and its textural properties. The H 2 S removal performance on the as-prepared materials suggested that the amine modified samples remarkably improved the H 2 S removal capacities with an order of BA-Cu-BTC > TEA-Cu-BTC > TEOA-Cu-BTC > Cu-BTC. Besides the enlarged surface area and the increased mesopores volumes, BA has the advantages of smaller steric hindrance and -NH 2 groups, among which the former increased the accessibility of Cu active sites while the latter acted as additional active sites for H 2 S capturing, thus affording BA-Cu-BTC highest breakthrough capacity of 77.3 mg S/g. Overall, this study elaborates the effect of organic amines in-situ modification on the Cu-BTC structure and desulfurization. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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