期刊
INORGANIC CHEMISTRY COMMUNICATIONS
卷 138, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.inoche.2022.109237
关键词
Hydrodesulfurization; Dibenzothiophene; Catalysts; Addition; Promoter
资金
- King Fahd University of Petroleum & Minerals (KFUPM) [KACO2512]
- King Abdullah City for Atomic and Renewable Energy
The influence of boron element on the activity of a hydrodesulfurization catalyst was evaluated. The addition of boron improved the specific surface area and catalytic activity of the catalyst, highlighting the significant role of boron in enhancing catalyst performance.
The influence of boron on the activity of a hydrodesulfurization, HDS, catalyst was evaluated for the cleaner production of fuel. Thus, mixed oxides of gamma-alumina and manganese oxide MnO were synthesized as a support and then loaded with molybdenum-copper, Mo-Cu, which work as an active phase and promoter. Different contents of boron were added to the synthesized catalysts to form AlMnO/MoCuB 0% (MAB 0), AlMnO/MoCuB 1% (MAB 1), AlMnO/MoCuB 2% (MAB 2) and AlMnO/MoCuB 5% (MAB 5). The textural properties of the materials were improved after the addition of boron from 164 m(2)/g of the control catalyst to 225, 258 and 265 m(2)/g for MAB (1), MAB (2) and MAB (5). X-ray diffraction (XRD) and Fourier transform infrared (FTIR) were utilized for structural characterization. X-ray photoelectron spectroscopy (XPS) was used to attain data on the chemical states and binding energies of the catalysts. A thermogravimetric analyzer (TGA) was utilized to assess the thermal stability of the catalysts. The catalytic activity was tested in a batch reactor system for the HDS of dibenzothiophene (DBT), under the following reaction parameters: T of 300 C, hydrogen pressure of 55 bar and 6 h reaction time. After boron addition, it became 98% (MAB 5) compared to 87% of the MAB0 control catalyst and that clarified the role of boron in enhancing the catalyst performance.
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