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学者姓名:黄宽
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Efficient recognition and selective capture of NH3 is not only beneficial for increasing the productivity of the synthetic NH3 industry but also for reducing air pollution. For this purpose, a group of deep eutectic solvents (DESs) consisting of glycolic acid (GA) and phenol (PhOH) with low viscosities and multiple active sites was rationally designed in this work. Experimental results show that the GA + PhOH DESs display extremely fast NH3 absorption rates (within 51 s for equilibrium) and high NH3 solubility. At 313.2 K, the NH3 absorption capacities of GA + PhOH (1:1) reach 6.75 mol/kg (at 10.7 kPa) and 14.72 mol/kg (at 201.0 kPa). The NH3 solubility of GA + PhOH DESs at low pressures were minimally changed after more than 100 days of air exposure. In addition, the NH3 solubility of GA + PhOH DESs remain highly stable in 10 consecutive absorption-desorption cycles. More importantly, NH3 can be selectively captured by GA + PhOH DESs from NH3/CO2/N-2 and NH3/N-2/H-2 mixtures. H-1-NMR, Fourier transform infrared and theoretical calculations were performed to reveal the intrinsic mechanism for the efficient recognition of NH3 by GA + PhOH DESs.
Keyword :
deep eutectic solvent deep eutectic solvent low viscosity low viscosity multiple active site multiple active site NH3 recognition NH3 recognition selective capture selective capture
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GB/T 7714 | Zheng, Lu , Ju, Saisai , Fang, Siqi et al. Rational design of deep eutectic solvents with low viscosities and multiple active sites for efficient recognition and selective capture of NH3 [J]. | SMART MOLECULES , 2025 , 3 (1) . |
MLA | Zheng, Lu et al. "Rational design of deep eutectic solvents with low viscosities and multiple active sites for efficient recognition and selective capture of NH3" . | SMART MOLECULES 3 . 1 (2025) . |
APA | Zheng, Lu , Ju, Saisai , Fang, Siqi , Zhang, Hongwei , Cai, Zhenping , Huang, Kuan et al. Rational design of deep eutectic solvents with low viscosities and multiple active sites for efficient recognition and selective capture of NH3 . | SMART MOLECULES , 2025 , 3 (1) . |
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High-carbon alcohols are important chemical raw materials and have extensive applications in the fields of chemistry, chemical engineering, and pharmaceuticals. Converting fatty acids or fatty acid methyl esters from waste oil into high-carbon alcohols through hydrogenation has attracted increasing attention. In this study, a series of Cu-ZrO2 catalysts were prepared by a citric acid-assisted sol-gel method. Results reveal that Cu-ZrO2 catalysts prepared by the sol-gel method mainly exist in the form of tetragonal ZrO2with loaded copper species. There is a certain metal-support interaction between metallic Cu and the ZrO2 support, and ZrO2 crystal phase can be retained during the harsh catalytic reaction conditions. X-ray photoelectron spectroscopy results show that Cu0 species are the key active centers. When the Cu0 content is insufficient, the conversion rate of methyl palmitate increases with the increase of Cu0 content. When the Cu0 content is sufficient, Cu+ and Cu0 have a synergistic effect on the hydrogenation reaction. Catalyst dosage, reaction time, reaction temperature and hydrogen pressure were found to have significant effects on the catalytic transformation of methyl palmitate. Increase of reaction temperature can significantly improve the conversion of methyl palmitate. However, excessive temperature can easily induce the dehydration of the generated hexadecanol into by-products such as hexadecane. The conversion of methyl palmitate can be up to 95.1%, and the yield of hexadecanol can reach 91.1% under the conditions of 10% copper loading, 300℃, 6MPa H2 pressure and 2h reaction. © 2025 Chemical Industry Press Co., Ltd.. All rights reserved.
Keyword :
Acids Acids Hydrogenolysis Hydrogenolysis Metallic compounds Metallic compounds Selenium compounds Selenium compounds
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GB/T 7714 | Bao, Jie , Yu, Panjie , Ma, Yongde et al. Design of Cu-ZrO2 catalyst and its utilization in hydrogenation of methyl palmitate to fatty alcohols [J]. | Chemical Industry and Engineering Progress , 2025 , 44 (5) : 2997-3008 . |
MLA | Bao, Jie et al. "Design of Cu-ZrO2 catalyst and its utilization in hydrogenation of methyl palmitate to fatty alcohols" . | Chemical Industry and Engineering Progress 44 . 5 (2025) : 2997-3008 . |
APA | Bao, Jie , Yu, Panjie , Ma, Yongde , Zhang, Hongwei , Cai, Zhenping , Cao, Yanning et al. Design of Cu-ZrO2 catalyst and its utilization in hydrogenation of methyl palmitate to fatty alcohols . | Chemical Industry and Engineering Progress , 2025 , 44 (5) , 2997-3008 . |
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Second-generation biodiesel is the dominant biomass-derived liquid fuel produced from nonedible natural or waste oils and fatty acids through selective oxygen removal. Here, we developed a highly selective sulfur-free NiMo/TiO2 catalyst by disentangling electronic and geometric effects to produce second-generation biodiesel via the hydrodeoxygenation of palmitic acid-one of the most common fatty acids in these feedstocks. An unprecedented hexadecane yield of 96.0% (on a mole basis) was achieved over the Ni1Mo1/TiO2 catalyst (with a Ni:Mo ratio of similar to 1:1) at 300 degrees C and 3 MPa H2. Kinetic studies reveal that the competition between hydrodeoxygenation (C-O scission) and decarbonylation (C-C scission) of the intermediate hexadecanol is key to optimizing selectivity. Furthermore, Mo incorporation markedly lowers the apparent activation energy of hydrodeoxygenation-especially in the Ni1Mo1/TiO2 catalyst, which has the lowest Ni-Ni coordination number. Combined with catalyst characterization, these findings elucidate a Mo-induced "Ni coordination environment"-directed reaction pathway: the superb hydrodeoxygenation activity and selectivity of Ni1Mo1/TiO2 stem from its abundant NiMo interfacial sites, where Mo-induced oxygen vacancies synergize with adjacent Ni sites to facilitate the adsorption of O-containing groups and subsequent C-O bond cleavage.
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GB/T 7714 | Fang, Jiachen , Sun, Weixiao , Huang, Kuan et al. Structural and Kinetic Insights into Interfacial Site Effects in NiMo-Catalyzed Hydrodeoxygenation of Palmitic Acid [J]. | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2025 , 64 (11) : 5962-5972 . |
MLA | Fang, Jiachen et al. "Structural and Kinetic Insights into Interfacial Site Effects in NiMo-Catalyzed Hydrodeoxygenation of Palmitic Acid" . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 64 . 11 (2025) : 5962-5972 . |
APA | Fang, Jiachen , Sun, Weixiao , Huang, Kuan , Ge, Xiaohu , Chen, Wenyao , Qian, Gang et al. Structural and Kinetic Insights into Interfacial Site Effects in NiMo-Catalyzed Hydrodeoxygenation of Palmitic Acid . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2025 , 64 (11) , 5962-5972 . |
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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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As the effects of environmental problems and energy crises become apparent, zero carbon routes are vital to achieve large-scale production of fuels, such as efficient utilization of biomass to produce biofuels. This critical review provides a systematic summary and guidance on the catalytic conversion of waste biolipids and lignocellulose into biofuels via hydro-conversion in respect of metal catalysts and reaction mechanisms. First, five typical metal catalysts are reviewed, including reducible metal oxides, metal sulfides, metal phosphides, metal carbides, and metal nitrides. Among them, reducible metal oxides and metal sulfides are widely reported due to their efficient hydrodeoxygenation (HDO) activity. The design and preparation of catalysts from noble and nonnoble metals, especially the rational design of catalyst active sites, are explored. For metal sulfides, novel in situ synthesis methods are summarized, especially in HDO reactions using oil-soluble precursors, such as ionic liquids with highly designable moieties. The importance of support is then discussed, particularly the positive effects of morphology, synergistic metal-support interactions, and surface acidity on HDO performance. Subsequently, the reaction mechanism of biomass hydrogenation treatment to produce biofuels was explored in detail using methyl palmitate as a biolipid model compound and cellobiose as cellulose and hemicellulose model compound. We also introduce two typical processes for hydro-conversion of biomass to biofuels involving three general units: pretreatment unit, HDO unit, and separation unit. Finally, this review provides a summary and insights into catalyst design, one-pot isomerization, operando characterization, and reaction process development.
Keyword :
Biofuels Biofuels Biolipids Biolipids Biomass Biomass Hydrodeoxygenation Hydrodeoxygenation Mechanism Mechanism
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GB/T 7714 | Zhang, Hongwei , Zhang, Jing , Ma, Yongde et al. A mini review on catalytic hydrodeoxygenation for biofuels production: catalyst, mechanism and process [J]. | APPLIED CATALYSIS A-GENERAL , 2025 , 699 . |
MLA | Zhang, Hongwei et al. "A mini review on catalytic hydrodeoxygenation for biofuels production: catalyst, mechanism and process" . | APPLIED CATALYSIS A-GENERAL 699 (2025) . |
APA | Zhang, Hongwei , Zhang, Jing , Ma, Yongde , Cai, Zhenping , Cao, Yanning , Huang, Kuan et al. A mini review on catalytic hydrodeoxygenation for biofuels production: catalyst, mechanism and process . | APPLIED CATALYSIS A-GENERAL , 2025 , 699 . |
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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 , 71 (8) . |
MLA | Shi, Leilian et al. "Mo-based ionic liquid as dispersive precursor for effective hydrodeoxygenation of stearic acid: Mechanism and kinetics" . | AICHE JOURNAL 71 . 8 (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 , 71 (8) . |
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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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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 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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