SEPARATION SCIENCE AND TECHNOLOGY
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2021
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IF 2.475
Entian Li,Yuanyuan Zhu,Yang Xu,Yihan Zhang,Pei Yao
The sulfur compounds in gasoline will cause air pollution and acid rain. As the main component of the sulfide compounds in gasoline, dibenzothiophene (DBT) is is difficult to remove. To solve this problem, magnetic imidazole ionic liquids (MILs) with different carbon chain alkanes [C4, 6, 8min]Br/FeCl3 were developed to improve the extractive desulfurization performance. Furthermore, Cetyltrimethylammonium bromide (CTAB) was added, in combination with MILs to achieve a higher removal rate of DBT in gasoline. The results show that CTAB combined with MILs has a better removal effect on DBT. The mechanism of CTAB combined with MILs gasoline desulfurization was analyzed.
研究领域:
化学工程
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环境科学
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材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Si-Wen Li,Hai-Yan Zhang,Tian-Hao Han,Wen-Qi Wu,Wei Wang,Jian-She Zhao
A newly kind of spinosus loaded-heteropolyacid catalyst Fe 3 O 4 @MOF-PMoW (abbreviated as FeMP, M = Cr, Cu and Zr) has been obtained under one-pot method using the various magnetic MOF materials bases. Detailed characterizations have proved out the spinosus structure, with the stinging surface morphologies outside, which benefits for the excellent desulfurization performance to the larger contact area with sulfur compounds as much as possible. To be noted, the FeCrP catalyst shows the 100% DBT removal in 60 min, while only 97.0% and 91.6% for FeCuP and FeZrP, respectively. The phenomenon is mainly attributed to the larger BET contact area, leading to link more PMoW to react with DBT in oil. In particular, the FeCrP could be applied in ODS process even after 10 times without the obvious decrease in catalytic activity and the same highly desulfurization performance also has founded in real diesel, showing a better using value in actual industrial application.
研究领域:
催化化学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
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2022
·Vol. 153
·期 4
·1159-1169
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IF 2.936
Liang Jilei,Fan Mengwei,Wu Wenjie,Wu Mengmeng,Cai Wangshui,Xinxing Gao,Huang Tingting,Rui Haiyun
This study shows the successful encapsulation of sandwich cobalt–tungsten polyoxomolybdate (Na 12 [WCo 3 (H 2 O) 2 (CoW 9 O 34 ) 2 ], abbreviated as CoWPOM) guest in mesoporous metal–organic framework MIL-101 host under static condition via a facile post-synthesis strategy. Several characterizations including powder XRD, FTIR, TGA, SEM–EDS, UV–vis DRS, XRF, and low temperature N 2 adsorption–desorption isotherm demonstrate the incorporation and homogenous-distribution of the sandwich CoWPOM guests in cavities of the MIL-101 host. The CoWPOM@MIL-101 composite possesses a better synergistic effect, and it demonstrates an excellent oxidative desulfurization catalytic activity with the DBT removal of 98.1% and recyclability at least 5 times without obvious activity decrease. Graphical Abstract
研究领域:
材料科学
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催化化学
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产品关联
DOI
高影响因子
FUEL
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2022
·
IF 8.035
Feng Li,Wending Zhou,Wanliang Yang,Meili Chen,Chun Wang,Rui Cao,Chengliang Zhou
The design and synthesis of hierarchical self-assembled 2D-channel silica (2D-CS) with mesoscopicshape control and developing of their application in catalysis has remained a challenge. Herein, we fabricated a series of 2D-CSx materials through the hierarchical self-assembly of curved lamellar micelles along with their derivative 2D channel catalysts (2D-CS x -NH 2 -HPW) by grafting amino groups and immobilizing phosphotungstic acid. These catalysts exhibit highly effective oxidative-adsorptive desulfurization (OADS) performance owing to their accessible open-transport channels. A novel theory that the stacking of curved lamellar micelles is similar to that of wrinkled-papers was proposed to explain the hierarchical self-assembly mechanism of the 2D-CS materials, which follows the “short-range order, long-range disorder” rule. Systematic characterizations and experiments indicated that the size and specific surface area of 2D-channel catalysts jointly determine their OADS performance. Most importantly, the 2D-channel catalysts show the highest removal efficiency of DBT when compared with 0D and 1D materials, which was ascribed to their facilitation of molecular diffusion owing to their accessible open-transport channels. The optimal 2D-channel catalysts (2D-CS 4 -NH 2 -HPW) exhibited excellent desulfurization performance despite omitting the extraction step, and the removal efficiency of DBT reached 99.72% in 5 min at 60 °C, much faster than previously reported mesoporous-catalyst-supported heteropoly acids. In addition, the OADS activity of typical sulfur compounds in the presence of the 2D-CS x -NH 2 -HPW catalyst was investigated, and the sulfur removal efficiency was found to decreases in the following order: DBT > 4,6-DMDBT > BT > n-DDM. The 2D-channel catalyst also exhibits excellent recyclability without significant loss of OADS activity after 10 cycles of reactions. This work provides a strategy for constructing 2D-channel catalysts for efficient desulfurization, demonstrating the potential of 2D-channel materials in catalytic applications.
研究领域:
材料科学
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催化
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化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）