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学者姓名：蔡镇平
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Abstract ：
In the present work, the selective hydrodeoxygenation (HDO) performance of stearic acid over in situ MoS2 catalysts produced from various Mo precursors was evaluated. Notably, the in situ MoS2 catalyst generated from [N-8881](2)MoO4-a Mo-based ionic liquid (IL) with oil-soluble property-achieves up to 99.9% of stearic acid conversion with the HDO product octadecane yield of 97.5% at 300 degrees C, 8 MPa, and 6 h. The activity of [N-8881](2)MoO4 for catalyzing the selective HDO reaction is much better than commercial precursors like Mo(CO)(6) and (NH4)(6)Mo7O24. The in situ MoS2 catalysts were thoroughly characterized and analyzed to elucidate the experimental results. Moreover, the reaction pathway of stearic acid was proposed according to the product distribution, and the relative kinetic parameters were also calculated and discussed. The results indicate that applying Mo-based IL as the precursor to generate in situ MoS2 catalyst for the selective HDO of biolipids is highly interesting and desired.
Keyword ：
biodiesel biodiesel biolipid biolipid hydrodeoxygenation hydrodeoxygenation ionic liquid ionic liquid MoS2 catalyst MoS2 catalyst
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| GB/T 7714 | Shi, Leilian , Chen, Weihao , Ma, Yongde et al. Mo-based ionic liquid as dispersive precursor for effective hydrodeoxygenation of stearic acid: Mechanism and kinetics [J]. | AICHE JOURNAL , 2025 . |
| MLA | Shi, Leilian et al. "Mo-based ionic liquid as dispersive precursor for effective hydrodeoxygenation of stearic acid: Mechanism and kinetics" . | AICHE JOURNAL (2025) . |
| APA | Shi, Leilian , Chen, Weihao , Ma, Yongde , Zhang, Hongwei , Cai, Zhenping , Cao, Yanning et al. Mo-based ionic liquid as dispersive precursor for effective hydrodeoxygenation of stearic acid: Mechanism and kinetics . | AICHE JOURNAL , 2025 . |
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Developing catalysts enabling reactive separation is a promising strategy to enhance reaction and separation efficiency of esterification processes. Herein, we designed a class of hybrid catalysts with p-toluenesulfonic acid (PTSA) as main catalyst, and hydrogensulfate ILs as support catalyst and extractant. Using the designed catalysts for methyl esterification of long-chain fatty acids, phase splitting can occur, resulting in ester-rich and catalyst-rich phases. Under optimal conditions, the conversion of palmitic acid (PA) gives methyl palmitate (MP) yield of 98.2 % in 3 hat 348.2 K. The catalysts are also applicable for effective conversion of other long-chain fatty acids and can be facilely recycled through liquid-liquid separation without loss of activity. COSMOtherm and Gaussian calculations were performed to rationalize the reactive separation behavior of the designed catalysts. The kinetic and thermodynamic properties of the esterification reaction were also examined using pseudo-homogeneous (PH) model with non-ideality corrections.
Keyword ：
Acidic catalyst Acidic catalyst Biodiesel Biodiesel Esterification Esterification Ionic liquid Ionic liquid Reactive separation Reactive separation
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| GB/T 7714 | Wu, Wenquan , Zhang, Jiayin , Ma, Yongde et al. Ionic liquid-based hybrid acidic catalysts enabling phase splitting and reactive separation for methyl esterification of long-chain fatty acids [J]. | CHEMICAL ENGINEERING SCIENCE , 2025 , 311 . |
| MLA | Wu, Wenquan et al. "Ionic liquid-based hybrid acidic catalysts enabling phase splitting and reactive separation for methyl esterification of long-chain fatty acids" . | CHEMICAL ENGINEERING SCIENCE 311 (2025) . |
| APA | Wu, Wenquan , Zhang, Jiayin , Ma, Yongde , Zhang, Hongwei , Cai, Zhenping , Cao, Yanning et al. Ionic liquid-based hybrid acidic catalysts enabling phase splitting and reactive separation for methyl esterification of long-chain fatty acids . | CHEMICAL ENGINEERING SCIENCE , 2025 , 311 . |
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There is a particular demand to explore low-volatility and structurally tunable absorbents for efficiency, selectivity and reversibility in capturing H2S. For the first time, the performance of deep eutectic solvents (DESs) composed of 1-ethyl-3-methylimidazolium chloride ([Emim]Cl) and acetamide (AA) were examined as physical absorbents for H2S capture. The physical properties of [Emim]Cl-AA DESs, and solubilities of both H2S and CO2 in them were measured. Relevant experimental results demonstrated that the solubilities of H2S in [Emim]Cl-AA DESs (1.1 mol/kg at 298.2 K and 1.023 bar) significantly exceed those of CO2 (0.040 mol/kg at 298.2 K and 1.027 bar). [Emim]Cl-AA DESs exhibit higher H2S solubilities and superior ideal H2S to CO2 selectivities (e.g., the ideal H2S/CO2 selectivity of [Emim]Cl-AA (1:0.5) is 28.5 at 298.2 K) than those physical absorbents ever reported. The recyclability of [Emim]Cl-AA DESs for H2S selective capture was also evaluated, which was found to be very stable in ten continuous absorption and regeneration cycle experiments. The mechanism of H2S capture by [Emim]Cl-AA DESs was finally illustrated at the molecular level with the support of theoretical calculations. © 2024 Elsevier B.V.
Keyword ：
Absorption selectivity Absorption selectivity Deep eutectic solvent Deep eutectic solvent H2S capture H2S capture Physical solvent Physical solvent Theoretical calculation Theoretical calculation
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| GB/T 7714 | Zheng, L. , Li, X. , Cao, Y. et al. Efficient, selective and reversible capture of hydrogen sulfide by [Emim]Cl-Acetamide deep eutectic solvents [J]. | Journal of Molecular Liquids , 2024 , 413 . |
| MLA | Zheng, L. et al. "Efficient, selective and reversible capture of hydrogen sulfide by [Emim]Cl-Acetamide deep eutectic solvents" . | Journal of Molecular Liquids 413 (2024) . |
| APA | Zheng, L. , Li, X. , Cao, Y. , Ma, Y. , Zhang, H. , Cai, Z. et al. Efficient, selective and reversible capture of hydrogen sulfide by [Emim]Cl-Acetamide deep eutectic solvents . | Journal of Molecular Liquids , 2024 , 413 . |
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The capture the low-content NH3 from industrial streams, and recycle it as the feedstocks for industrial processes is very important. In this work, we reported the use of mesoporous polydivinylbenzene (PDVB) as the support of metal-based deep eutectic solvents (DESs) containing choline chloride (ChCl) and metal chlorides (SnCl2, FeCl3 or ZnCl2) for NH3 capture. The structure of composite materials was characterized in details, and the NH3 capture performance and mechanism of them were also examined in depth. Owing to the coordination interaction of metal ions with NH3, along with the hydrogen-bond interaction of - OH and Cl- with NH3, the DES@PDVB composites exhibit considerably high low-content NH3 capacities. The optimized sample ChCl + 2ZnCl2@PDVB1.5 can adsorb 7.43 mol/kg of NH3 at 25 degree celsius and 0.122 bar, which is advantageous over most other adsorbents fabricated in the literature. The mechanism of NH3 capture by DES@PDVB composites was also illustrated through spectroscopic characterizations.
Keyword ：
Deep eutectic solvent Deep eutectic solvent Low content Low content Mesoporous polymer Mesoporous polymer Multiple interaction Multiple interaction NH 3 capture NH 3 capture
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| GB/T 7714 | Zhang, Jiayin , Fang, Siqi , Zheng, Lu et al. Mesoporous polymer supported Metal-Based deep eutectic solvents for enhanced capture of Low-Content Ammonia [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 493 . |
| MLA | Zhang, Jiayin et al. "Mesoporous polymer supported Metal-Based deep eutectic solvents for enhanced capture of Low-Content Ammonia" . | CHEMICAL ENGINEERING JOURNAL 493 (2024) . |
| APA | Zhang, Jiayin , Fang, Siqi , Zheng, Lu , Cao, Yanning , Zhang, Hongwei , Cai, Zhenping et al. Mesoporous polymer supported Metal-Based deep eutectic solvents for enhanced capture of Low-Content Ammonia . | CHEMICAL ENGINEERING JOURNAL , 2024 , 493 . |
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The design of novel practical catalysts is critical for the blossoming of biodiesel green-energy, in which Mo-based catalysts are of particular interest. In this work, an in-situ synthesis method was proposed to obtain a combo Mo-based ionic liquid and SAPO-11 catalyst. The catalyst presents both highly dispersed MoS2 as hydrodeoxygenation active sites and acidic sites for isomerization. MoS2 with a few fine layers can be identified based on TEM images and the Bronsted acid sites are dominant based on Pyridine-IR analysis. A great performance of MoS2/C(8)min-15 %SA can be obtained under optimized reaction conditions with 100 % conversion of methyl palmitate, 75.0 mol% hydrodeoxygenation to n-C-15-C-16, and 20.5 mol % isomerization to i-C-15-C-16. The structure and activity of the catalyst can be retained at least for 4 cycles. Thin layers and high sulfurization, large amount of Br & oslash;nsted acid sites, and suitable reaction conditions are key points to achieve a significant performance and avoid over cracking and deactivation. On basis of detected intermediates and kinetic data simulations, a complex reaction pathway was proposed and the specific k values for each elementary reaction were provided for the hydrodeoxygenation and isomerization of methyl palmitate.
Keyword ：
Biodiesel Biodiesel Hydrodeoxygenation Hydrodeoxygenation Isomerization Isomerization Methyl palmitate Methyl palmitate MoS2 MoS2 SAPO-11 SAPO-11
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| GB/T 7714 | Ding, Yongxin , Lin, Jun , Yu, Panjie et al. An in-situ combo Mo-based ionic liquid and SAPO-11 catalyst for efficient biolipids hydrodeoxygenation and isomerization [J]. | FUEL , 2024 , 362 . |
| MLA | Ding, Yongxin et al. "An in-situ combo Mo-based ionic liquid and SAPO-11 catalyst for efficient biolipids hydrodeoxygenation and isomerization" . | FUEL 362 (2024) . |
| APA | Ding, Yongxin , Lin, Jun , Yu, Panjie , Zhang, Hongwei , Ma, Yongde , Cai, Zhenping et al. An in-situ combo Mo-based ionic liquid and SAPO-11 catalyst for efficient biolipids hydrodeoxygenation and isomerization . | FUEL , 2024 , 362 . |
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A series of mesoporous polymers functionalized with different kinds and contents of Br & oslash; nsted acidic sites were designed and synthesized for NH 3 capture. The textural properties, morphologies and chemical structures of synthesized mesoporous polymers were characterized in details, and the NH 3 capture performance was evaluated systematically. It is found that the mesoporous polymers functionalized with phosphoric sites exhibit much better NH 3 capture performance at low pressures than those with carboxylic and sulfonic sites. Specifically, the NH 3 adsorption capacities of P(DVB-VPA)-4.0 can reach 4.82 mmol/g at 298.2 K and 0.033 bar. The excellent ability of P(DVB-VPA)-4.0 for selectively adsorbing low -content NH 3 from NH 3 /N 2 /H 2 and NH 3 /N 2 /CO 2 mixed gases was demonstrated by breakthrough experiments, and the adsorption of NH 3 by P(DVB-VPA)-4.0 is found to be mostly reversible. The thermodynamic properties and mechanism of NH 3 adsorption were also examined in depth, disclosing the important role of Br & oslash; nsted acidic sites in enhanced capture of low -content NH 3 by P(DVBVPA)-4.0.
Keyword ：
Acid -base interaction Acid -base interaction Br & oslash;nsted acidic site Br & oslash;nsted acidic site Low content Low content Mesoporous polymer Mesoporous polymer NH 3 capture NH 3 capture
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| GB/T 7714 | Zheng, Lu , Shi, Leilian , Li, Qiuke et al. Designing Brønsted acidic sites on mesoporous polymers for enhanced capture of low-content ammonia [J]. | CHEMICAL ENGINEERING SCIENCE , 2024 , 292 . |
| MLA | Zheng, Lu et al. "Designing Brønsted acidic sites on mesoporous polymers for enhanced capture of low-content ammonia" . | CHEMICAL ENGINEERING SCIENCE 292 (2024) . |
| APA | Zheng, Lu , Shi, Leilian , Li, Qiuke , Zhang, Hongwei , Cai, Zhenping , Huang, Kuan et al. Designing Brønsted acidic sites on mesoporous polymers for enhanced capture of low-content ammonia . | CHEMICAL ENGINEERING SCIENCE , 2024 , 292 . |
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The efficient separation and collection of ammonia (NH3) during NH3 synthesis process is essential to improve the economic efficiency and protect the environment. In this work, ethanolammonium hydrochloride (EtOHACl) and phenol (PhOH) were used to prepare a novel class of deep eutectic solvents (DESs) with multiple active sites and low viscosities. The NH3 separation performance of EtOHACl + PhOH DESs was analyzed completely. It is figured out that the NH3 absorption rates in EtOHACl + PhOH DESs are very fast. The NH3 absorption capacities are very high and reach up to 5.52 and 10.74 mol$kg-1 at 11.2 and 100.4 kPa under 298.2 K, respectively. In addition, the EtOHACl + PhOH DESs present highly selective absorption of NH3 over N2 and H2 and good regenerative properties after seven cycles of absorption/desorption. The intrinsic separation mechanism of NH3 by EtOHACl + PhOH DESs was further revealed by spectroscopic analysis and quantum chemistry calculations. (c) 2023 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
Keyword ：
Absorption Absorption Deep eutectic solvent Deep eutectic solvent Ionic liquid Ionic liquid Low viscosity Low viscosity Multiple active site Multiple active site Separation Separation
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| GB/T 7714 | Zhang, Jiayin , Zheng, Lu , Fang, Siqi et al. Efficient and reversible separation of NH3 by deep eutectic solvents with multiple active sites and low viscosities [J]. | CHINESE JOURNAL OF CHEMICAL ENGINEERING , 2024 , 67 : 97-105 . |
| MLA | Zhang, Jiayin et al. "Efficient and reversible separation of NH3 by deep eutectic solvents with multiple active sites and low viscosities" . | CHINESE JOURNAL OF CHEMICAL ENGINEERING 67 (2024) : 97-105 . |
| APA | Zhang, Jiayin , Zheng, Lu , Fang, Siqi , Zhang, Hongwei , Cai, Zhenping , Huang, Kuan et al. Efficient and reversible separation of NH3 by deep eutectic solvents with multiple active sites and low viscosities . | CHINESE JOURNAL OF CHEMICAL ENGINEERING , 2024 , 67 , 97-105 . |
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The efficient deoxygenation of renewable biolipids into liquid alkanes within the diesel range is a key protocol for producing high-quality biofuels. In this work, the conversion of methyl palmitate and raw palm oil were accomplished utilizing a bifunctional catalyst of Ni catalysts supported on B2O3-ZrO2 under solvent-free conditions. Among various Ni loading ratios investigated, the catalyst featuring a 10 % Ni loading achieved 100 % conversion of methyl palmitate and 84.4 % of liquid yield, with approximately 65 % being C15 alkanes. Additionally, more than 91 % of hydrocarbons were also generated from raw palm oil. These results can be attributed to the synergistic interplay between the acid sites, following B2O3 modification, and the presence of Ni species. Furthermore, the analysis of product distribution, gas product detection and the kinetics calculation strongly supports that the deoxygenation process of methyl palmitate primarily follows the hydrodecarbonylation route, leading to the predominant formation of C15 alkane.
Keyword ：
Bifunctional catalyst Bifunctional catalyst Biodiesel Biodiesel Deoxygenation Deoxygenation Liquid alkanes Liquid alkanes Methyl palmitate Methyl palmitate
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| GB/T 7714 | Yu, Panjie , Xu, Jing , Liang, Rengan et al. Solvent-free deoxygenation of biolipid into liquid alkanes over bifunctional Ni/B2O3-ZrO2 catalyst [J]. | FUEL , 2024 , 375 . |
| MLA | Yu, Panjie et al. "Solvent-free deoxygenation of biolipid into liquid alkanes over bifunctional Ni/B2O3-ZrO2 catalyst" . | FUEL 375 (2024) . |
| APA | Yu, Panjie , Xu, Jing , Liang, Rengan , Cai, Zhenping , Ma, Yongde , Zhang, Hongwei et al. Solvent-free deoxygenation of biolipid into liquid alkanes over bifunctional Ni/B2O3-ZrO2 catalyst . | FUEL , 2024 , 375 . |
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There is a particular demand to explore low-volatility and structurally tunable absorbents for efficiency, selectivity and reversibility in capturing H2S. For the first time, the performance of deep eutectic solvents (DESs) composed of 1-ethyl-3-methylimidazolium chloride ([Emim]Cl) and acetamide (AA) were examined as physical absorbents for H2S capture. The physical properties of [Emim]Cl-AA DESs, and solubilities of both H2S and CO2 in them were measured. Relevant experimental results demonstrated that the solubilities of H2S in [Emim]Cl-AA DESs (1.1 mol/kg at 298.2 K and 1.023 bar) significantly exceed those of CO2 (0.040 mol/kg at 298.2 K and 1.027 bar). [Emim]Cl-AA DESs exhibit higher H2S solubilities and superior ideal H2S to CO2 selectivities (e.g., the ideal H2S/CO2 selectivity of [Emim]Cl-AA (1:0.5) is 28.5 at 298.2 K) than those physical absorbents ever reported. The recyclability of [Emim]Cl-AA DESs for H2S selective capture was also evaluated, which was found to be very stable in ten continuous absorption and regeneration cycle experiments. The mechanism of H2S capture by [Emim]Cl-AA DESs was finally illustrated at the molecular level with the support of theoretical calculations.
Keyword ：
Absorption selectivity Absorption selectivity Deep eutectic solvent Deep eutectic solvent H2S capture H2S capture Physical solvent Physical solvent Theoretical calculation Theoretical calculation
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| GB/T 7714 | Zheng, Lu , Li, Xiong , Cao, Yanning et al. Efficient, selective and reversible capture of hydrogen sulfide by [Emim] Cl-Acetamide deep eutectic solvents [J]. | JOURNAL OF MOLECULAR LIQUIDS , 2024 , 413 . |
| MLA | Zheng, Lu et al. "Efficient, selective and reversible capture of hydrogen sulfide by [Emim] Cl-Acetamide deep eutectic solvents" . | JOURNAL OF MOLECULAR LIQUIDS 413 (2024) . |
| APA | Zheng, Lu , Li, Xiong , Cao, Yanning , Ma, Yongde , Zhang, Hongwei , Cai, Zhenping et al. Efficient, selective and reversible capture of hydrogen sulfide by [Emim] Cl-Acetamide deep eutectic solvents . | JOURNAL OF MOLECULAR LIQUIDS , 2024 , 413 . |
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In this work, an oil-soluble ionic liquid (IL) was combined with mixed metal oxide for in situ generation of bifunctional catalysts for slurry-phase heavy oil hydrocracking. The oil-soluble IL selected was trihexylmethylammonium molybdate ([N-6661](2)MoO4), and the mixed metal oxide selected was SiO2-ZrO2. The performance of using [N-6661](2)MoO4 and SiO2-ZrO2 for slurry-phase hydrocracking was examined systematically. It is found that the addition of SiO2-ZrO2 can significantly improve the conversion of residue to distillate and the gas and coke yields are also improved. The MoS2/SiO2-ZrO2 bifunctional catalysts in situ generated in the reaction system were collected for detailed characterizations. The MoS2 slabs are in a highly dispersed and sulfurized status in the matrix of SiO2-ZrO2, and there are also abundant acidic sites in resultant bifunctional catalysts. The kinetics of slurry-phase hydrocracking was further investigated to disclose the reaction routes for the conversion of residue and the role of adding SiO2-ZrO2 in promoting the hydrocracking reactions.
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| GB/T 7714 | Ma, Yongde , Wu, Wenquan , Zhang, Jiayin et al. Slurry-Phase Hydrocracking of Heavy Oil with Bifunctional Catalysts In Situ Generated from Oil-Soluble Ionic Liquid and Mixed Metal Oxide [J]. | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2023 , 62 (38) : 15459-15468 . |
| MLA | Ma, Yongde et al. "Slurry-Phase Hydrocracking of Heavy Oil with Bifunctional Catalysts In Situ Generated from Oil-Soluble Ionic Liquid and Mixed Metal Oxide" . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 62 . 38 (2023) : 15459-15468 . |
| APA | Ma, Yongde , Wu, Wenquan , Zhang, Jiayin , Zhang, Hongwei , Cai, Zhenping , Cao, Yanning et al. Slurry-Phase Hydrocracking of Heavy Oil with Bifunctional Catalysts In Situ Generated from Oil-Soluble Ionic Liquid and Mixed Metal Oxide . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2023 , 62 (38) , 15459-15468 . |
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