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Zhou S, Pan Y, Wang Y, Cheng H, Wu P, Li H, Huang Y, Hua M, Liu J, Zhu W. Modulating the Reaction Pathway of Ni 2P/Al 2O 3 by Introducing Different Noble Metals for Hydrodesulfurization of Diesel. Inorg Chem 2024. [PMID: 39197118 DOI: 10.1021/acs.inorgchem.4c03181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2024]
Abstract
Regulating the reaction pathway of a hydrodesulfurization (HDS) catalyst to achieve ultradeep desulfurization of diesel is a low-energy-consumption yet effective strategy but remains a tricky challenge. Herein, we present a Ni2P/Al2O3 catalyst with mesoporous properties synthesized by a facile hydrothermal-temperature-programmed reduction and normal impregnation (TPRI) method, and then different precious metals with similar loadings were introduced to prepare M-Ni2P/Al2O3 (M = Pt, Pd) catalysts through incipient wetness impregnation. Their structures were analyzed by a series of characterization methods, and their catalytic performances were examined for 4,6-dimethyldibenzothiophene (4,6-DMDBT) HDS. The correlation characterization results revealed that the kind of precious metals significantly affected the surface acidity and then the metal-support interaction (MSI) between Ni2P and Al2O3. Among them, the Pt-Ni2P/Al2O3 catalyst exhibits superior HDS activity with 88.5% 4,6-DMDBT conversion to Pd-Ni2P/Al2O3 (76.3%) and pristine Ni2P/Al2O3 (58.6%) catalysts under reaction conditions of 3.4 MPa, 340 °C, and LHSV = 4.8 h-1. This should be due to the introduction of Pt, which significantly facilitates the dissociation rate of H2 and the subsequent generation of more active hydrogen species than Pd, thereby promoting the formation of Brønsted acid sites, remarkably facilitating the isomerization (ISO) pathway, and markedly enhancing the 4,6-DMDBT HDS conversion of Pt-Ni2P/Al2O3. This work provides an efficient protocol to tame the reaction pathway and thereafter the catalytic performance of the HDS catalyst in the future.
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Affiliation(s)
- Shuhui Zhou
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Yu Pan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Yan Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Huifang Cheng
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Peiwen Wu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Huaming Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Yan Huang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Mingqing Hua
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Jixing Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Wenshuai Zhu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, P. R. China
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Wei X, Cui L, Liu C, Shen K, Xu J, Dilworth J, Xiao T, Cao F. The Calculation of Both Electrostatic and Van der Waals Effects to Probe the Efficiency of Solvent Extraction of Heterocyclic Aromatics from Heavy Oil. Chemistry 2023; 29:e202301954. [PMID: 37665039 DOI: 10.1002/chem.202301954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/25/2023] [Accepted: 09/04/2023] [Indexed: 09/05/2023]
Abstract
Due to the complex composition and similar structure, the extraction denitrification of aromatic rich oil is faced with the contradiction problem of denitrification efficiency and aromatic loss which cannot be efficiently solved by experiments. However, the complex interactions involved can be analyzed from the perspective of calculation, and the prediction criteria and methods are proposed. Based on rigorous density functional theory calculation data, Simple models based on electrostatic potential (ESP) and Van der Waals potential (VdWP)-based calculations were established and validated. The twofold model provided the best prediction for interactions between extractants and nitrogen compounds and between extractants and aromatics, which determines denitrification efficiency and aromatic loss, respectively, due to the most complete description of both electrostatic and VdW force. This provides a powerful tool for evaluating the non-covalent interactions and thence tuning the efficiency of the separation process. Thus, high denitrification efficiency (43.2~66.3 %) and moderate aromatic loss (1.7~4.4 %) were obtained using screened deep eutectic solvents (DESs). This ideal observation provided the potential for mild hydrodesulfurization and manufacture of high-grade carbon materials.
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Affiliation(s)
- Xingguo Wei
- School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Lingrui Cui
- School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Cao Liu
- School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Kaili Shen
- School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Jun Xu
- School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Jon Dilworth
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, UK
| | - Tiancun Xiao
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, UK
| | - Fahai Cao
- School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
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3
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Li A, Song H, Meng H, Lu Y, Li C. Steric effects of alkyl
DBTs
: The root cause of frustrating efficacy of heterogeneous desulfurization for real diesel. AIChE J 2022. [DOI: 10.1002/aic.17614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ao Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology Beijing China
- College of Chemical Engineering, Beijing University of Chemical Technology Beijing China
| | - Hongyan Song
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology Beijing China
| | - Hong Meng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology Beijing China
- College of Chemical Engineering, Beijing University of Chemical Technology Beijing China
| | - Yingzhou Lu
- College of Chemical Engineering, Beijing University of Chemical Technology Beijing China
| | - Chunxi Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology Beijing China
- College of Chemical Engineering, Beijing University of Chemical Technology Beijing China
- Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology Beijing China
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