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学者姓名：崔勍焱
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Abstract ：
The recovery of CH4 from coalbed gas (CBG) is significant for improving energy utilization and mitigating the greenhouse effect. In this study, CH4 was separated from CBG by forming sII hydrate with 5.56 mol % 1,3-dioxolane (DIOX) solution assisted by an eco-friendly promoter sodium lauroyl glutamate (SLG). The effects of SLG concentration, initial pressure and temperature, stirring rate, and CBG composition were systematically investigated. The results revealed that the addition of SLG notably diminished the hydrate induction time and reaction durations. The presence of 500 ppm of SLG decreased the CH4 concentration to 15.50 mol % from the initial 30.23 mol %, and the CH4 recovery and separation factor reached 81.70% and 3.34, respectively. Comparative analyses with other eco-friendly surfactants highlighted the substantial advantages of SLG. The CH4 concentration in the residual gas first decreased and then increased with the augmentation of the initial pressure, temperature, and stirring rate. An inverse pattern was observed in the variations of CH4 recovery and separation factor. This indicated that there existed an optimal initial pressure, temperature, and stirring rate for CBG separation. The CH4 content in the hydrate was increased to 91.59% after a fourth-stage enrichment, meeting the standards for the direct injection of CBG into natural gas pipelines. These findings provide valuable insights for CH4 separation from CBG by forming sII hydrate with eco-friendly promoters.
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| GB/T 7714 | Mu, Liang , Zhu, Xiaohai , Lai, Jintao et al. Methane Recovery from Coalbed Gas by Forming sII Hydrate with the Aid of a Novel Eco-Friendly Promoter [J]. | ENERGY & FUELS , 2025 , 39 (8) : 3752-3764 . |
| MLA | Mu, Liang et al. "Methane Recovery from Coalbed Gas by Forming sII Hydrate with the Aid of a Novel Eco-Friendly Promoter" . | ENERGY & FUELS 39 . 8 (2025) : 3752-3764 . |
| APA | Mu, Liang , Zhu, Xiaohai , Lai, Jintao , Zeng, Jiguang , Cui, Qingyan . Methane Recovery from Coalbed Gas by Forming sII Hydrate with the Aid of a Novel Eco-Friendly Promoter . | ENERGY & FUELS , 2025 , 39 (8) , 3752-3764 . |
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The development of sustainable techniques to produce high-performance zeolite is essential to achieve green production in industry.Herein,we report an eco-friendly route to synthesizing hierarchical Beta zeolite from kaolinite and recycled mother liquor.The results reveal that the unutilized species(such as silicon species and Na+)in mother liquor stayed in a stable concentration during eleven recycled experiments.Moreover,the syn-thesized Beta zeolites still have comparable physicochemical properties and catalytic performance in the esteri-fication of levulinic acid with ethanol over the initial zeolite although eleven recycled experiments.Life cycle assessment exhibits that the synthesis of Beta zeolite with recycled mother liquor can reduce global warming potential by 23％and resource depletion-water use by 36％compared to that without recycled mother liquor.This quantitatively demonstrates that the approach proposed in this work is really a sustainable one,extremely increasing the utilization efficiency of raw materials and decreasing the environmental burden.
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| GB/T 7714 | Guoxi Xiao , Xiaoling Chen , Tiesen Li et al. Eco-friendly synthesis and environmental impact assessment of hierarchical Beta zeolite from kaolinite and recycled mother liquor [J]. | 绿色化学工程（英文） , 2024 , 5 (4) : 501-510 . |
| MLA | Guoxi Xiao et al. "Eco-friendly synthesis and environmental impact assessment of hierarchical Beta zeolite from kaolinite and recycled mother liquor" . | 绿色化学工程（英文） 5 . 4 (2024) : 501-510 . |
| APA | Guoxi Xiao , Xiaoling Chen , Tiesen Li , Chan Wang , Qingyan Cui , Yuanyuan Yue . Eco-friendly synthesis and environmental impact assessment of hierarchical Beta zeolite from kaolinite and recycled mother liquor . | 绿色化学工程（英文） , 2024 , 5 (4) , 501-510 . |
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Natural gas hydrates (NGH) as a potential energy resource gain much attention, the depressurization-assisted CH4/CO2 replacement is a combined method proposed recently for NGH mining. This work experimentally investigated the depressurization-assisted CH4/CO2 replacement behavior in the muddy-silt slurries, and the effect of depressurization moment, amplitude and frequency was systematically examined. The results revealed that the depressurization after replacement significantly promoted reaction within a short period. The CH4 replacement ratio was increased by delaying the depressurization moment and increasing the depressurization magnitude. The maximum CH4 replacement ratio reached 61.28% at the depressurization moment of 48 h and 274.15 K. Additionally, the CH4 replacement ratio was further increased in the secondary depressurization event compared to that at the primary depressurization. This research indicated that the depressurization was beneficial for CO2 sequestration when the replacement pressure is higher than CO2 hydrate equilibrium pressure. While it did not facilitate CO2 sequestration when the replacement pressure is close to CO2 hydrate equilibrium pressure. The free water consumption decreased with the increase of the depressurization moment, amplitude and frequency. These findings would contribute to the development of the depressurization-assisted CO2/CH4 replacement in the future. © 2024 Elsevier B.V.
Keyword ：
Carbon dioxide Carbon dioxide Energy resources Energy resources Gas hydrates Gas hydrates Hydration Hydration Mining Mining Potential energy Potential energy Silt Silt
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| GB/T 7714 | Mu, Liang , Zhao, Huixing , Li, Xianlong et al. Experimental investigation on the depressurization-assisted CH4/CO2 replacement behavior in the muddy silt slurries [J]. | Gas Science and Engineering , 2024 , 126 . |
| MLA | Mu, Liang et al. "Experimental investigation on the depressurization-assisted CH4/CO2 replacement behavior in the muddy silt slurries" . | Gas Science and Engineering 126 (2024) . |
| APA | Mu, Liang , Zhao, Huixing , Li, Xianlong , Zeng, Jiguang , Cui, Qingyan . Experimental investigation on the depressurization-assisted CH4/CO2 replacement behavior in the muddy silt slurries . | Gas Science and Engineering , 2024 , 126 . |
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The gas-hydrate-sediment-water multiphase flow is often involved in drilling and exploitation of natural gas hydrate (NGH) reservoirs in seabed due to its weak cementation; therefore, understanding hydrate formation and decomposition in sediment-contained slurries is important. In this work, CH4 hydrate formation and decomposition in clay-silt slurries was explored, the effects of clay type and content, stirring rate, additives, experimental temperature, and pressure were systematically investigated. The presence of clay notably accelerated CH4 hydrate formation in slurries, and the montmorillonite exhibited a more obvious promotion effect than kaolinite. As the stirring rate increased, the induction time and reaction time were shortened, while the gas consumption rate and water conversion increased. The addition of 500 ppm sodium dodecyl sulfate (SDS) and 1.0 wt % fulvic acid (FA) significantly reduced the induction time and increased hydrate formation rate. During the interaction of SDS and sediment, CH4 hydrate formed in the slurries instantaneously. The CH4 hydrate decomposition rate in slurries increased as the experimental temperature increased or the pressure decreased. The temperature had a limited impact on the decomposition time above freezing point, while it was significant below freezing point. The presence of clay notably decreased the CH4 hydrate decomposition rate in slurries. Compared to the clay-free system, the ΔTd values (temperature decreased during hydrate decomposition) in the montmorillonite systems were decreased, while they were increased in the kaolinite systems. The findings provide valuable insights for the exploitation of marine NGH. © 2024 American Chemical Society.
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| GB/T 7714 | Mu, L. , Lai, J. , Li, X. et al. Methane Hydrate Formation and Decomposition Process in Clay-Silt Slurries [J]. | Energy and Fuels , 2024 , 38 (16) : 15103-15115 . |
| MLA | Mu, L. et al. "Methane Hydrate Formation and Decomposition Process in Clay-Silt Slurries" . | Energy and Fuels 38 . 16 (2024) : 15103-15115 . |
| APA | Mu, L. , Lai, J. , Li, X. , Zhao, H. , Zeng, J. , Cui, Q. . Methane Hydrate Formation and Decomposition Process in Clay-Silt Slurries . | Energy and Fuels , 2024 , 38 (16) , 15103-15115 . |
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Controllable synthesis of hierarchical zeolites from natural aluminosilicate minerals is considered an efficient and eco-friendly approach for the production of high-performance zeolites, but its synthesis mechanism is still obscure. Herein, we take the synthesis of a single-crystalline hierarchical NaA zeolite using submolten salt depolymerized kaolin (SMS-K) as the sole source of silicon and aluminum via a mesoscale reorganization strategy as an example to elucidate the reorganization process. Comprehensive morphological and structural analyses reveal that sodium-rich voids in SMS-K facilitate concurrent assembly both within the interior and at the interface of the amorphous gel, leading to the formation of numerous nanoparticles with short-range order which assemble into single-crystal nanocube NaA zeolites with intracrystalline mesopores. By harnessing confinement effects, SMS-K modulates the growth of nanoparticle sizes and enhances the intimate interconnection of nanocubes, thereby yielding NaA zeolite aggregates that exhibit hierarchical porosity, encompassing micro-, meso-, and macropores. This study offers the potential for designing and precisely controlling the fabrication of hierarchical zeolites derived from natural minerals.
Keyword ：
depolymerized kaolin depolymerized kaolin hierarchical NaA zeolite hierarchical NaA zeolite mesoscale reorganization mechanism mesoscale reorganization mechanism role of sodium and hydroxide ions role of sodium and hydroxide ions single-crystalline single-crystalline
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| GB/T 7714 | Chen, Xiaoling , Li, Tiesen , Cui, Qingyan et al. Mesoscale Reorganization of the Depolymerized Aluminosilicate into Single-Crystalline Hierarchical Zeolite [J]. | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (44) : 61371-61380 . |
| MLA | Chen, Xiaoling et al. "Mesoscale Reorganization of the Depolymerized Aluminosilicate into Single-Crystalline Hierarchical Zeolite" . | ACS APPLIED MATERIALS & INTERFACES 16 . 44 (2024) : 61371-61380 . |
| APA | Chen, Xiaoling , Li, Tiesen , Cui, Qingyan , Shi, Jie , Tan, Yisheng , Bao, Xiaojun et al. Mesoscale Reorganization of the Depolymerized Aluminosilicate into Single-Crystalline Hierarchical Zeolite . | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (44) , 61371-61380 . |
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Abstract ：
We report a facile yet effective strategy to prepare hierarchical Beta zeolite with high molecular transport effectivity in catalysis. Alkaline etching involves preferential desilication from Beta framework and collapse of microporosity. The preferential desilication from outer rim of Beta stacking faults enlarged intercrystallite mesopores, while the collapse of microporosity created cylindroid-like intracrystalline mesopore. Part of Altet with lower stability was removed during alkaline etching, leading to a decrease in acid sites density. Alkaline etching of Beta zeolite with 0.2 mol/L NaOH solution greatly improved n -hexane isomerization activity over Ptbased catalysts. The maximum yield of isohexane and dibranched isomers increased by 6.2 % and 38.6 %, respectively. The enlargement of intercrystallite mesopores and the generation of intracrystalline mesopores of Beta zeolite lowered apparent activation energy of reaction. The apparent diffusivities measurements further revealed that Pt/Beta-0.2 M showed much lower transport limitation than Pt/Beta-parent. Our findings provide a promising catalyst for industrial alkane isomerization.
Keyword ：
Alkaline etching Alkaline etching Alkane isomerization Alkane isomerization Dibranched isomers Dibranched isomers Diffusion barrier Diffusion barrier Mesoporous Beta zeolite Mesoporous Beta zeolite
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| GB/T 7714 | Wang, Pengzhao , Chen, Tingting , Qiu, Zihui et al. Pt-promoted mesoporous Beta zeolite catalysts for n-Hexane isomerization with enhanced selectivity to dibranched isomers [J]. | FUEL , 2024 , 368 . |
| MLA | Wang, Pengzhao et al. "Pt-promoted mesoporous Beta zeolite catalysts for n-Hexane isomerization with enhanced selectivity to dibranched isomers" . | FUEL 368 (2024) . |
| APA | Wang, Pengzhao , Chen, Tingting , Qiu, Zihui , Yao, Wenjun , Liu, Pengpeng , Zhang, Yongze et al. Pt-promoted mesoporous Beta zeolite catalysts for n-Hexane isomerization with enhanced selectivity to dibranched isomers . | FUEL , 2024 , 368 . |
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Abstract ：
The development of sustainable techniques to produce high-performance zeolite is essential to achieve green production in industry. Herein, we report an eco-friendly route to synthesizing hierarchical Beta zeolite from kaolinite and recycled mother liquor. The results reveal that the unutilized species (such as silicon species and Na+) in mother liquor stayed in a stable concentration during eleven recycled experiments. Moreover, the synthesized Beta zeolites still have comparable physicochemical properties and catalytic performance in the esterification of levulinic acid with ethanol over the initial zeolite although eleven recycled experiments. Life cycle assessment exhibits that the synthesis of Beta zeolite with recycled mother liquor can reduce global warming potential by 23% and resource depletion-water use by 36% compared to that without recycled mother liquor. This quantitatively demonstrates that the approach proposed in this work is really a sustainable one, extremely increasing the utilization efficiency of raw materials and decreasing the environmental burden. © 2024 Institute of Process Engineering, Chinese Academy of Sciences.
Keyword ：
Eco-friendly synthesis Eco-friendly synthesis Hierarchical Beta zeolite Hierarchical Beta zeolite Life cycle assessment Life cycle assessment Recycled mother liquor Recycled mother liquor
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| GB/T 7714 | Xiao, G. , Chen, X. , Li, T. et al. Eco-friendly synthesis and environmental impact assessment of hierarchical Beta zeolite from kaolinite and recycled mother liquor [J]. | Green Chemical Engineering , 2024 , 5 (4) : 501-510 . |
| MLA | Xiao, G. et al. "Eco-friendly synthesis and environmental impact assessment of hierarchical Beta zeolite from kaolinite and recycled mother liquor" . | Green Chemical Engineering 5 . 4 (2024) : 501-510 . |
| APA | Xiao, G. , Chen, X. , Li, T. , Wang, C. , Cui, Q. , Yue, Y. . Eco-friendly synthesis and environmental impact assessment of hierarchical Beta zeolite from kaolinite and recycled mother liquor . | Green Chemical Engineering , 2024 , 5 (4) , 501-510 . |
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Carbon adsorbents have been widely used to remove indoor volatile organic compounds (VOCs), however, the proliferation of bacteria on the carbon adsorbents may deteriorate the indoor air quality and thus pose a serious threat to human health. Herein, we report the synthesis of antibacterial porous carbon spheres (carbonized aminophenol-formaldehyde resin, CAF) with well-dispersed Cu species via an in situ incorporation of Cu2+ during the polymerization of 3-aminophenol-formaldehyde resin followed by a thermal carbonization and reduction process. Compared with CAF, the Cu/CAF-x nanocomposites with Cu loading show a much higher specific surface area (>700 m2 g−1 vs. 569 m2 g−1 for CAF). In addition, the pore size of Cu/CAF-x is ranging from 0.7 to 1.68 nm, which is exactly conducive to adsorb the toluene molecules. As a result, the toluene adsorption capacity is improved from 123.50 mg g−1 for CAF to >170 mg g−1 for Cu/CAF-x. More importantly, such adsorbents possess excellent antibacterial performance, the Cu/CAF-10 (10 wt% of Cu loading) with a concentration of 50 μg mL−1 can completely kill the E. coli within 30 min. Our work paves the way to the development of bifunctional adsorbents with both efficient VOCs adsorption and excellent antibacterial performance. © 2023
Keyword ：
Adsorption Adsorption Air quality Air quality Carbonization Carbonization Copper compounds Copper compounds Escherichia coli Escherichia coli Formaldehyde Formaldehyde Health risks Health risks Indoor air pollution Indoor air pollution Pore size Pore size Porous materials Porous materials Toluene Toluene Volatile organic compounds Volatile organic compounds
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| GB/T 7714 | Zhang, Hongwei , Wu, Guanghui , Liu, Qunhong et al. Bifunctional Cu-incorporated carbon nanospheres via in-situ complexation strategy as efficient toluene adsorbents and antibacterial agents [J]. | Chemosphere , 2024 , 349 . |
| MLA | Zhang, Hongwei et al. "Bifunctional Cu-incorporated carbon nanospheres via in-situ complexation strategy as efficient toluene adsorbents and antibacterial agents" . | Chemosphere 349 (2024) . |
| APA | Zhang, Hongwei , Wu, Guanghui , Liu, Qunhong , Liu, Zhichen , Yang, Qin , Cui, Qingyan et al. Bifunctional Cu-incorporated carbon nanospheres via in-situ complexation strategy as efficient toluene adsorbents and antibacterial agents . | Chemosphere , 2024 , 349 . |
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A seed-directed approach to synthesizing FeZSM-22 zeolite without organic structure directing agent(OSDA)was developed by using Fe-rich diatomite as all aluminum and iron sources.The FeZSM-22 zeolite with optimal crystallinity and purity can be obtained by systematically adjusting feed composi-tion and synthesis conditions.Characterizations show that FeZSM-22 zeolite synthesized with OSDA-free owns high crystallinity,obvious thin needle-shaped morphology and high Bronsted/Lewis acid ratio.Significantly,when used for n-octane hydroisomerization reaction,its derived catalyst exhibits the best catalytic performance reflected by the highest selectivity to C8 isomers compared to the two reference catalysts prepared based on a Fe-containing and a Fe-free ZSM-22 synthesized through an OSDA-directed route from natural diatomite and conventional chemicals,respectively.This work provides an alternative route to sustainably synthesizing heteroatomic zeolites with high performance.
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| GB/T 7714 | Tiesen Li , Ting Chen , Yinghui Ye et al. OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization [J]. | 中国化学工程学报（英文版） , 2024 , 66 (2) : 51-59 . |
| MLA | Tiesen Li et al. "OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization" . | 中国化学工程学报（英文版） 66 . 2 (2024) : 51-59 . |
| APA | Tiesen Li , Ting Chen , Yinghui Ye , Peng Dong , Tinghai Wang , Qingyan Cui et al. OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization . | 中国化学工程学报（英文版） , 2024 , 66 (2) , 51-59 . |
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Abstract ：
A seed-directed approach to synthesizing FeZSM-22 zeolite without organic structure directing agent (OSDA) was developed by using Fe-rich diatomite as all aluminum and iron sources. The FeZSM-22 zeolite with optimal crystallinity and purity can be obtained by systematically adjusting feed composition and synthesis conditions. Characterizations show that FeZSM-22 zeolite synthesized with OSDA-free owns high crystallinity, obvious thin needle-shaped morphology and high Bronsted/Lewis acid ratio. Significantly, when used for n-octane hydroisomerization reaction, its derived catalyst exhibits the best catalytic performance reflected by the highest selectivity to C-8 isomers compared to the two reference catalysts prepared based on a Fe-containing and a Fe-free ZSM-22 synthesized through an OSDA-directed route from natural diatomite and conventional chemicals, respectively. This work provides an alternative route to sustainably synthesizing heteroatomic zeolites with high performance. (c) 2023 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
Keyword ：
FeZSM-22 zeolite FeZSM-22 zeolite Natural minerals Natural minerals n-octane hydroisomerization n-octane hydroisomerization OSDA-free synthesis OSDA-free synthesis
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| GB/T 7714 | Li, Tiesen , Chen, Ting , Ye, Yinghui et al. OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization [J]. | CHINESE JOURNAL OF CHEMICAL ENGINEERING , 2024 , 66 : 51-59 . |
| MLA | Li, Tiesen et al. "OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization" . | CHINESE JOURNAL OF CHEMICAL ENGINEERING 66 (2024) : 51-59 . |
| APA | Li, Tiesen , Chen, Ting , Ye, Yinghui , Dong, Peng , Wang, Tinghai , Cui, Qingyan et al. OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization . | CHINESE JOURNAL OF CHEMICAL ENGINEERING , 2024 , 66 , 51-59 . |
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