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学者姓名：蔡国辉
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Abstract ：
Incorporation of ionic liquids into metal-organic frameworks (MOFs) offers a new platform to construct heterogeneous bifunctional catalytic systems for the chemical capture and conversion of CO2 with epoxides. Herein, an imidazolium-based ionic liquid decorated UiO-66 type MOF (P3[BCMIm]Br@UiO-66) was successfully constructed via solvothermal assembly of the carboxyl-functionalized imidazolium ionic liquid ligand, terephthalic acid ligand and Zr(iv) ions. It exhibits the highest catalytic activity upon the cycloaddition of CO2 (98.2% conversion of propylene oxide and 99% selectivity to propylene carbonate) under optimized conditions (2.2 Mpa CO2, 1.0 wt%, 110 degrees C, reaction time 2 h). Notably, P3[BCMIm]Br@UiO-66 outperformed the original UiO-66 materials and [BCMIm]Br. P3[BCMIm]Br@UiO-66 retained its good catalytic performance for up to five recycling runs with only a little loss in catalytic activity. Furthermore, several additional coupling reactions were investigated with other epoxides as substrates.
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| GB/T 7714 | Lin, Jianghui , Luo, Jiamei , Zhang, Mengjia et al. Incorporation of a carboxyl-functionalized imidazolium-based ionic liquid into a UiO-66 type MOF for chemical fixation of CO2 into carbonates [J]. | CATALYSIS SCIENCE & TECHNOLOGY , 2024 , 14 (16) : 4496-4505 . |
| MLA | Lin, Jianghui et al. "Incorporation of a carboxyl-functionalized imidazolium-based ionic liquid into a UiO-66 type MOF for chemical fixation of CO2 into carbonates" . | CATALYSIS SCIENCE & TECHNOLOGY 14 . 16 (2024) : 4496-4505 . |
| APA | Lin, Jianghui , Luo, Jiamei , Zhang, Mengjia , Zhang, Lei , Cai, Guohui , Zou, Jiahua et al. Incorporation of a carboxyl-functionalized imidazolium-based ionic liquid into a UiO-66 type MOF for chemical fixation of CO2 into carbonates . | CATALYSIS SCIENCE & TECHNOLOGY , 2024 , 14 (16) , 4496-4505 . |
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Developing economic controlled-release fertilizers (CRFs) with superior performance is an ongoing and important research area. This work investigated the co-modification of acid-activated attapulgite (ac-AT) to optimize its surface properties for polyurethane (PU) composite applications, specifically in the coatings of CRFs. The modified ac-AT (MAT) rods were obtained through treatment with 2.0 wt.% KH-560 coupling agent and in-situ grafting with stearic acid (SA). Varying the addition amount of SA resulted in the synthesis of different MAT fillers. Along with the adjustment of the filling amount, the properties of the MAT/PU composites were controlled. Notably, applying 1.5 wt.% SA onto the KH-560 treated ac-AT produced MAT with a contact angle of 100.8 & DEG;, enhancing hydrophobicity and dispersion within the PU matrix. Furthermore, at a filling amount of 9.0 wt.%, the MAT/PU composite exhibited the most favorable properties with a tensile strength of 2.37 MPa, making it the optimal coating for CRFs with 75% nutrient release within 46 days while the coating efficiency was 3.0 wt.%. This co-modification approach shows great potential in enhancing filler properties and promoting their application in organic coatings.
Keyword ：
attapulgite attapulgite composite coating composite coating fertilizer fertilizer polyurethane polyurethane surface modification surface modification
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| GB/T 7714 | Wang, Shiping , Shen, Lushen , Yang, Honglin et al. Surface grafting stearic acid to the coupling agent on attapulgite: A reinforced filler in castor oil-based polyurethane coating [J]. | JOURNAL OF APPLIED POLYMER SCIENCE , 2023 , 140 (44) . |
| MLA | Wang, Shiping et al. "Surface grafting stearic acid to the coupling agent on attapulgite: A reinforced filler in castor oil-based polyurethane coating" . | JOURNAL OF APPLIED POLYMER SCIENCE 140 . 44 (2023) . |
| APA | Wang, Shiping , Shen, Lushen , Yang, Honglin , Cai, Guohui , Lei, Ganchang , Shen, Lijuan et al. Surface grafting stearic acid to the coupling agent on attapulgite: A reinforced filler in castor oil-based polyurethane coating . | JOURNAL OF APPLIED POLYMER SCIENCE , 2023 , 140 (44) . |
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Ammonia (NH3) decomposition to release COx-free hydrogen (H2) over non-noble catalysts has gained increasing attention. In this study, three nanostructured CeO2 with different morphologies, viz. rod (R), sphere (Sph), and spindle (Spi), were fabricated and served as supports for Ni/CeO2 catalyst. The CeO2 supports are different in particle sizes, specific surface area and porosity, resulting in the formation of Ni nanoparticles with distinguished sizes and dispersions. The surface properties of the Ni/CeO2 catalysts are not only distinct but also influential, affecting the adsorption and desorption of NH3, N2, and/or H2 molecules. The Ni/CeO2-R catalyst shows superior catalytic activity compared to the other two, owing to its smaller Ni crystallite size and larger BET surface area. The most abundant strong basic sites are observed for Ni/CeO2-Spi catalyst based on its exposed CeO2(110) planes, which facilitates the donation of electrons to the Ni particles, benefiting the associative desorption of N atoms. Thus, Ni/CeO2-Spi shows higher catalytic activity than Ni/CeO2-Sph, despite their almost identical Ni crystallite sizes.& COPY; 2022 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
Keyword ：
CeO2 CeO2 Electron donation Electron donation Hydrogen production Hydrogen production Morphology Morphology NH 3 decomposition NH 3 decomposition Ni Ni Rare earths Rare earths
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| GB/T 7714 | Chen, Chongqi , Fan, Xiaoshuang , Zhou, Chen et al. Hydrogen production from ammonia decomposition over Ni/CeO2 catalyst: Effect of CeO2 morphology* [J]. | JOURNAL OF RARE EARTHS , 2023 , 41 (7) : 1014-1021 . |
| MLA | Chen, Chongqi et al. "Hydrogen production from ammonia decomposition over Ni/CeO2 catalyst: Effect of CeO2 morphology*" . | JOURNAL OF RARE EARTHS 41 . 7 (2023) : 1014-1021 . |
| APA | Chen, Chongqi , Fan, Xiaoshuang , Zhou, Chen , Lin, Li , Luo, Yu , Au, Chaktong et al. Hydrogen production from ammonia decomposition over Ni/CeO2 catalyst: Effect of CeO2 morphology* . | JOURNAL OF RARE EARTHS , 2023 , 41 (7) , 1014-1021 . |
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Ammonia(NH3)decomposition to release COx-free hydrogen(H2)over non-noble catalysts has gained increasing attention.In this study,three nanostructured CeO2 with different morphologies,viz.rod(R),sphere(Sph),and spindle(Spi),were fabricated and served as supports for Ni/CeO2 catalyst.The CeO2 supports are different in particle sizes,specific surface area and porosity,resulting in the formation of Ni nanoparticles with distinguished sizes and dispersions.The surface properties of the Ni/CeO2 catalysts are not only distinct but also influential,affecting the adsorption and desorption of NH3,N2,and/or H2 molecules.The Ni/CeO2-R catalyst shows superior catalytic activity compared to the other two,owing to its smaller Ni crystallite size and larger BET surface area.The most abundant strong basic sites are observed for Ni/CeO2-Spi catalyst based on its exposed CeO2(110)planes,which facilitates the donation of electrons to the Ni particles,benefiting the associative desorption of N atoms.Thus,Ni/CeO2-Spi shows higher catalytic activity than Ni/CeO2-Sph,despite their almost identical Ni crystallite sizes.
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| GB/T 7714 | Chongqi Chen , Xiaoshuang Fan , Chen Zhou et al. Hydrogen production from ammonia decomposition over Ni/CeO2 catalyst:Effect of CeO2 morphology [J]. | 稀土学报（英文版） , 2023 , 41 (7) : 1014-1021 . |
| MLA | Chongqi Chen et al. "Hydrogen production from ammonia decomposition over Ni/CeO2 catalyst:Effect of CeO2 morphology" . | 稀土学报（英文版） 41 . 7 (2023) : 1014-1021 . |
| APA | Chongqi Chen , Xiaoshuang Fan , Chen Zhou , Li Lin , Yu Luo , Chaktong Au et al. Hydrogen production from ammonia decomposition over Ni/CeO2 catalyst:Effect of CeO2 morphology . | 稀土学报（英文版） , 2023 , 41 (7) , 1014-1021 . |
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本发明提出一种逆流整体式催化燃烧与吸热反应耦合的反应系统，所使用的整体式催化燃烧‑吸热反应耦合反应器呈竖向的柱形体，其底端处设有可燃气体入口，顶部设有原料气入口，柱形体内整体式催化燃烧固定反应床与吸热反应床均呈环形柱状，两者的环层以交替套叠方式形成套层耦合结构；可燃气体经第二换热器预热至催化燃烧反应温度后，进入整体式催化燃烧固定反应床环层燃烧并加热吸热反应床环层，其燃烧尾气返回第二换热器作为热源冷却后排出；所述原料气经第一换热器预热后进入吸热反应床环层进行反应，其气态反应产物经吸热反应床的产物出口返回第一换热器作为热源冷却后输入收集装置储存；本发明能够将低浓度可燃气体治理与吸热反应相互结合。
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| GB/T 7714 | 蔡国辉 , 王智雄 , 林立 et al. 一种逆流整体式催化燃烧与吸热反应耦合的反应系统 : CN202210396416.4[P]. | 2022-04-15 00:00:00 . |
| MLA | 蔡国辉 et al. "一种逆流整体式催化燃烧与吸热反应耦合的反应系统" : CN202210396416.4. | 2022-04-15 00:00:00 . |
| APA | 蔡国辉 , 王智雄 , 林立 , 罗宇 , 陈崇启 , 肖益鸿 et al. 一种逆流整体式催化燃烧与吸热反应耦合的反应系统 : CN202210396416.4. | 2022-04-15 00:00:00 . |
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With high energy density both by weight and volume, ammonia (NH3) is a promising hydrogen carrier. Furthemore, NH3 has a mature industrial background, and in liquid form storage and transportation is not a problem. Adding the merit of zero CO2 emission, NH3-to-power by direct ammonia solid oxide fuel cells (DA-SOFCs) is an acceptable strategy to facilitate hydrogen usage. Nonetheless, to achieve efficacy, a high compatibility between operating temperature and catalytic materials for NH3 decomposition is needed. In this work, we developed a tubular DA-SOFC with an output power capability of > 3 W. By combining experimental measurements and multi-physics simulation, we comprehensively studies the related intrinsic processes. Based on experimental data, we developed a two-dimensional multi-scale electro-thermo model of tubular DA-SOFC. Separately we evaluated the effects of inlet fuel gas composition, inlet flow velocity, operating temperature, and operating voltage on the rate of NH3 catalytic decomposition and H-2 electrochemical oxidation, as well as on NH3 conversion, H atom utilization, and electrical efficiency of the tubular DA-SOFC. The results suggest that high H atom utilization could be realized by matching the rate of NH3 decomposition with that of H-2 electrochemical oxidation. It was observed that with the decrease of temperature, the rate of H-2 oxidation decreases more rapidly than that of NH3 decomposition, suggesting that the flow velocity of NH3 should be appropriately lowered to optimize H atom utilization. Finally, we established a correlation between H atom utilization, operating voltage, and electrical efficiency for synergistic optimization of operating conditions. At 0.7 V and 800 celcius, the tubular DA-SOFC fueled with NH3 of 27 mL.min(-1) is capable of offering 3.2 W, displaying an efficiency of 60%. Compared to that of a tubular H-2-SOFC (only 51% efficiency), the efficiency is significantly higher on the basis of equal voltage and fuel utilization ratio. The outcome of the present study demonstrates the potential of tubular DA-SOFC as a device for high-efficiency power generation.
Keyword ：
Ammonia decomposition Ammonia decomposition Direct ammonia fuel cell Direct ammonia fuel cell Efficiency improvement Efficiency improvement Multi-physics model Multi-physics model Solid oxide fuel cell (SOFC) Solid oxide fuel cell (SOFC) Tubular Tubular
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| GB/T 7714 | Luo, Yu , Liao, Shuting , Chen, Shuai et al. Optimized coupling of ammonia decomposition and electrochemical oxidation in a tubular direct ammonia solid oxide fuel cell for high-efficiency power generation [J]. | APPLIED ENERGY , 2022 , 307 . |
| MLA | Luo, Yu et al. "Optimized coupling of ammonia decomposition and electrochemical oxidation in a tubular direct ammonia solid oxide fuel cell for high-efficiency power generation" . | APPLIED ENERGY 307 (2022) . |
| APA | Luo, Yu , Liao, Shuting , Chen, Shuai , Fang, Huihuang , Zhong, Fulan , Lin, Li et al. Optimized coupling of ammonia decomposition and electrochemical oxidation in a tubular direct ammonia solid oxide fuel cell for high-efficiency power generation . | APPLIED ENERGY , 2022 , 307 . |
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Al-doped Co3O4 and CoO are prepared from Co-Al hydrotalcite by calcination in air and N-2 atmospheres, and characterized by TG-DTA, XRD, SEM, N-2 adsorption, Raman, XPS, and H-2-TPR. Co-Al hydrotalcite is oxidized to Co(Co,Al)(2)O-4 in air accompanying with the collapse of layered structure, while in N-2 it decomposes to Co(Al)O that remains the plate morphology of hydrotalcite. In both cases, Al3+ is doped into the lattice of cobalt oxides, leading to marked changes in the crystal size, surface state, and reducibility. Especially, Al-doped CoO shows smaller crystal size (4.1 nm), larger surface area (172 m(2) g(-1)), and higher degree of structural disorder than Al doped Co3O4. Meanwhile, the Al-doped cobalt oxides show different reducibilities to those of Co3O4 and CoO, indicating a strong interaction between cobalt and aluminum. The N-2-calcined sample exhibits higher activity for benzene combustion than the air-calcined sample as well as a relatively good stability during heating/cooling cycles and a good long-time durability. Under the reaction atmosphere, Co(Al)O is transferred to Co(Co,Al)(2)O-4. The resulting Co(Co,Al)(2)O-4 remains the original plate morphology and textural property and presents abundant surface adsorbed oxygen species, which accounts for its high activity.
Keyword ：
Benzene Benzene Catalytic combustion Catalytic combustion Cobalt oxide Cobalt oxide Hydrotalcite-like compounds Hydrotalcite-like compounds Volatile organic compounds Volatile organic compounds
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| GB/T 7714 | Wan, Chunsheng , Wei, Xiaofeng , Cai, Guohui et al. Hydrotalcite-derived aluminum-doped cobalt oxides for catalytic benzene combustion: Effect of calcination atmosphere [J]. | MOLECULAR CATALYSIS , 2022 , 520 . |
| MLA | Wan, Chunsheng et al. "Hydrotalcite-derived aluminum-doped cobalt oxides for catalytic benzene combustion: Effect of calcination atmosphere" . | MOLECULAR CATALYSIS 520 (2022) . |
| APA | Wan, Chunsheng , Wei, Xiaofeng , Cai, Guohui , Li, Dalin , Zhan, Yingying , Xiao, Yihong et al. Hydrotalcite-derived aluminum-doped cobalt oxides for catalytic benzene combustion: Effect of calcination atmosphere . | MOLECULAR CATALYSIS , 2022 , 520 . |
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Herein, an attempt was made to modulate the properties of NiO oxides towards methane combustion. For this purpose, appropriate content of copper was introduced into the NiO lattice to generate Cu-Ni solid solution, in view of the similarities in atomic-size and electronegativity between copper and nickel. This delivered more unsaturated nickel atoms and reduced the nanoparticle size of NiO, generating more lattice defects. Also, the oxygen binding energy was significantly lowered stemming from the creation of Ni-O-Cu linkage, and the interaction between CuO and NiO. Consequently, larger amount of active surface adsorbed oxygen sites were given and the reducibility of NiO was considerably enhanced for bimetallic systems compared with pure NiO. Meanwhile, the surface acid base properties were adjusted over samples after the addition of copper, attributed to the charge redistribution among the oxygen and metal atoms. These effects accounted for the preferred activity, water-resistance, and durability for Cu-promoted NiO catalysts. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Keyword ：
Cu-addition Cu-addition Lattice defects Lattice defects Methane combustion Methane combustion NiO NiO Surface adsorbed oxygen sites Surface adsorbed oxygen sites
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| GB/T 7714 | Fan, Siqin , Zhang, Wen , Xu, Hong et al. Tuning lattice defects to facilitate the catalytic performance of Ni-Cu-O hybrid nanoparticles towards methane oxidation [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2022 , 47 (7) : 4536-4545 . |
| MLA | Fan, Siqin et al. "Tuning lattice defects to facilitate the catalytic performance of Ni-Cu-O hybrid nanoparticles towards methane oxidation" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 47 . 7 (2022) : 4536-4545 . |
| APA | Fan, Siqin , Zhang, Wen , Xu, Hong , Cai, Guohui , Zhan, Yingying , Chen, Xiaohua et al. Tuning lattice defects to facilitate the catalytic performance of Ni-Cu-O hybrid nanoparticles towards methane oxidation . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2022 , 47 (7) , 4536-4545 . |
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CeO2-ZrO2-Al2O3 composite oxides supported palladium catalysts (Pd/CZA) are promising candidates for catalytic oxidation reactions. However, the efficient and stable oxidation of methane over Pd-based catalysts remains a longstanding challenge. Herein, we present a facile strategy to boost the catalytic performance of Pd/CZA through elaborately tuning the phase structure of supports. Calcining supports at relatively high temperatures (1200, 1300 degrees C) induced the phase transition of alumina (from gamma- to alpha-) and the development of CeO2-ZrO2 solid solution (CZ). The weak interaction between alpha-Al2O3 and PdO resulted in an improved reducibility of catalysts. Meanwhile, the higher oxygen mobility originated from well-crystallized CZ phase contributed to the reoxidation of Pd to PdO, giving rise to abundant surface active Pd2+ species. Coupled with the hydrophobicity of alpha-Al2O3, the catalyst prepared with CZA supports calcined at 1300 degrees C demonstrated an excellent low-temperature activity, astounding stability and greatly enhanced water resistance towards methane combustion. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Keyword ：
CeO2-ZrO2-Al2O3 composite oxides CeO2-ZrO2-Al2O3 composite oxides Methane combustion Methane combustion Pd-based catalysts Pd-based catalysts Phase structure Phase structure Surface property Surface property
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| GB/T 7714 | Lin, Jia , Chen, Yelin , Huang, Jiangli et al. Synergistic tuning of the phase structure of alumina and ceria-zirconia in supported palladium catalysts for enhanced methane combustion [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2021 , 46 (67) : 33397-33408 . |
| MLA | Lin, Jia et al. "Synergistic tuning of the phase structure of alumina and ceria-zirconia in supported palladium catalysts for enhanced methane combustion" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46 . 67 (2021) : 33397-33408 . |
| APA | Lin, Jia , Chen, Yelin , Huang, Jiangli , Cai, Guohui , Xiao, Yihong , Zhan, Yingying et al. Synergistic tuning of the phase structure of alumina and ceria-zirconia in supported palladium catalysts for enhanced methane combustion . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2021 , 46 (67) , 33397-33408 . |
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CeO2 was employed to modify the Cu/SiO2 catalyst for water-gas shift (WGS) reaction, and two different ways to introduce CeO2 were applied, i.e., ammonia evaporation hydrothermal (AEH) and impregnation (IM) methods. The sizes of Cu nanoparticles and strength of Cu-SiO2 synergetic interaction were analyzed by HRTEM and H-2-TPR characterizations. The Cu+/Cu-0 ratio and strength of Cu-CeO2 synergetic interaction were evaluated via XPS and XAES techniques. It was revealed that more Cu-0 leads to higher CO conversion, based on its pronounced effect on water dissociation. The strength of the Cu-SiO2 synergetic interaction in the Cu/SiO2 catalyst varies with altering the state of CuO species. Cu-CeO2 synergetic interaction is associated with oxygen vacancies in CeO2, which also act as active sites for H2O dissociation. The Cu/SiO2-CeO2-AEH catalyst exhibits the best activity and stability among the three catalysts toward the WGS reaction, because it has a large number of Cu-0 and strong synergetic interaction of Cu with SiO2 and CeO2.
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| GB/T 7714 | Cai, Guohui , He, Yuanyuan , Ren, Hongju et al. Hydrogen Production via Water-Gas Shift Reaction by Cu/SiO2 Catalyst: A Case Study of CeO2 Doping [J]. | ENERGY & FUELS , 2021 , 35 (4) : 3521-3528 . |
| MLA | Cai, Guohui et al. "Hydrogen Production via Water-Gas Shift Reaction by Cu/SiO2 Catalyst: A Case Study of CeO2 Doping" . | ENERGY & FUELS 35 . 4 (2021) : 3521-3528 . |
| APA | Cai, Guohui , He, Yuanyuan , Ren, Hongju , Zhan, Yingying , Chen, Chongqi , Luo, Yu et al. Hydrogen Production via Water-Gas Shift Reaction by Cu/SiO2 Catalyst: A Case Study of CeO2 Doping . | ENERGY & FUELS , 2021 , 35 (4) , 3521-3528 . |
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