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学者姓名：江莉龙
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Abstract ：
The water gas shift reaction is an important procedure in high-purity hydrogen production, and achieving high CO conversion in one single reactor is a key optimization objective. This work has developed a novel radial flow fixed-bed reactor for water gas shift reaction with integrated variable heat exchange and numerically investigated the system optimization concepts. The continuous heat removal from the catalyst bed has been proven to fully improve CO conversion at a lower H2O/CO molar ratio. The heat transfer rate distribution can also be flexibly adjusted to ensure sufficiently high and low temperatures in the early and late stages of the reaction, respectively, for a higher conversion. With sufficient coolant, low-temperature and high-temperature catalysts for water gas shift reaction can be combined in one reactor to increase CO conversion to over 98%, and the delayed heat removal configuration can achieve the highest CO conversion (98.50%) with the least proportion of low-temperature catalysts (9.2%). © 2024 Hydrogen Energy Publications LLC
Keyword ：
Low temperature production Low temperature production Radial flow Radial flow Water gas shift Water gas shift
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| GB/T 7714 | Huang, Yunyun , Huang, Wenshi , Lin, Li et al. Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction [J]. | International Journal of Hydrogen Energy , 2025 , 99 : 685-696 . |
| MLA | Huang, Yunyun et al. "Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction" . | International Journal of Hydrogen Energy 99 (2025) : 685-696 . |
| APA | Huang, Yunyun , Huang, Wenshi , Lin, Li , Cao, Yanning , Luo, Yu , Lin, Xingyi et al. Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction . | International Journal of Hydrogen Energy , 2025 , 99 , 685-696 . |
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Water gas shift reaction is an important process in hydrogen production from carbon-based materials. Cu-based catalysts are widely used in low-temperature water gas shift reactions. The problem is that Cu species are prone to sintering and deactivation, as well as the controversial reaction mechanism. Herein, CuFe2O4 modified with Al3+ is served as the Cu-based catalyst precursor, and the catalytic structure-activity relationship as well as reaction mechanism are carefully investigated. The modification of CuFe2O4 precursor by Al3+ enhances the Cu species dispersion, redox properties and electron transfer ability, leading to increasing the proportion of Cu+/ (Cu0+Cu+), which results in enhancing the ability of the catalyst to adsorb CO and dissociate H2O. The combination of temperature-programmed surface reaction (TPSR) and infrared spectroscopy shows that the catalyst with weak water dissociation ability and medium CO adsorption capacity are prone to obey the association mechanism.
Keyword ：
Association mechanism Association mechanism Copper ferrite Copper ferrite Cu plus site Cu plus site Metal-support interaction Metal-support interaction Spinel Spinel
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| GB/T 7714 | Zhi, Guo , Huang, Chunjin , Ren, Hongju et al. Ternary Cu-Fe-Al spinel catalyst for hydrogen production via water gas shift reaction: Electron transfer enhancement and reaction mechanism [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 102 : 1093-1102 . |
| MLA | Zhi, Guo et al. "Ternary Cu-Fe-Al spinel catalyst for hydrogen production via water gas shift reaction: Electron transfer enhancement and reaction mechanism" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 102 (2025) : 1093-1102 . |
| APA | Zhi, Guo , Huang, Chunjin , Ren, Hongju , Fang, Huihuang , Chen, Chongqi , Luo, Yu et al. Ternary Cu-Fe-Al spinel catalyst for hydrogen production via water gas shift reaction: Electron transfer enhancement and reaction mechanism . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 102 , 1093-1102 . |
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Ammonia is a carbon-free energy carrier with 17.6 wt% hydrogen content. The design of an efficient and compact ammonia decomposition reactor based on low-temperature catalysts is the key to realizing industrial hydrogen production from ammonia. In this work, a multiscale model was developed by bridging the particle-scale characteristics of catalysts and reactor performances, to fully comprehend the ammonia decomposition process. The effects of catalyst porosity and pore diameters on the reactor size, precious metal loading, and the profile of temperature and heat flux were systematically evaluated. An improved reactor design was further proposed by applying the segmented reactor packed with two-stage egg-shell-type low-temperature catalysts, which decreased the precious metal usage by 61.6% and the temperature drop by 42.9 K. This segmentation strategy balanced the reaction rate and heat flux, indicating a significant potential in highly efficient, economical, and reliable hydrogen production from ammonia.
Keyword ：
ammonia decomposition ammonia decomposition catalyst micro-structure catalyst micro-structure hydrogen production hydrogen production multiscale model multiscale model precious metal reduction precious metal reduction
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| GB/T 7714 | Zhang, Lixuan , Wu, Yifan , Huang, Wenshi et al. Multiscale modeling of a low-temperature NH3 decomposition reactor for precious metal reduction and temperature control [J]. | AICHE JOURNAL , 2025 . |
| MLA | Zhang, Lixuan et al. "Multiscale modeling of a low-temperature NH3 decomposition reactor for precious metal reduction and temperature control" . | AICHE JOURNAL (2025) . |
| APA | Zhang, Lixuan , Wu, Yifan , Huang, Wenshi , Lin, Li , Wang, Luqiang , Wu, Zeyun et al. Multiscale modeling of a low-temperature NH3 decomposition reactor for precious metal reduction and temperature control . | AICHE JOURNAL , 2025 . |
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当液氨管道处于事故泄漏、停输超压或计划维护等情况时,可采用泄放的方式对管内液氨进行泄压回收.由于氨的高体积膨胀性,其泄放过程的节流效应会导致管内温度骤降,加剧管道受冷收缩和脆性断裂的风险.针对目前液氨管道泄放特性研究不足,参考国内外相关设计和运行参数,建立液氨管道泄放仿真模型,探讨管长、管径和操作条件(温度、压力)影响下的泄放特征参数发展规律.研究结果表明:随着管道长度减小,泄放初期管内压降和温降增大,泄放过程压力和温度随时间下降幅度增加;随着管径减小,泄放口初始压力和温度下降幅度增大,泄放时间和泄放最低温度减小;管道运行压力对整体泄放过程影响较小;管道运行温度越低,泄放口初始温降越大,泄放所需时间越长.研究成果将为液氨管道紧急泄放的安全控制和应急方案的制定提供重要依据.
Keyword ：
仿真模拟 仿真模拟 影响因素 影响因素 泄放 泄放 液氨管道 液氨管道 特征参数 特征参数
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| GB/T 7714 | 尹鹏博 , 林涌滨 , 滕霖 et al. 液氨管道泄放特性及影响因素研究 [J]. | 化学工程 , 2025 , 53 (2) : 78-83 . |
| MLA | 尹鹏博 et al. "液氨管道泄放特性及影响因素研究" . | 化学工程 53 . 2 (2025) : 78-83 . |
| APA | 尹鹏博 , 林涌滨 , 滕霖 , 李卫东 , 黄鑫 , 李臻超 et al. 液氨管道泄放特性及影响因素研究 . | 化学工程 , 2025 , 53 (2) , 78-83 . |
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Ammonia is a carbon-free hydrogen carrier, and development of non-noble metal catalyst to decompose ammonia into hydrogen is desirable for practical applications. However, the metal catalyst is challenged by the sintering of metal particles under high-temperature reaction conditions. In this study, a series of Li-, Al-, and Co-containing hydrotalcite-like compounds (HTlc) were synthesized by co-precipitation and used as precursors to prepare well-dispersed and thermally stable Co nanoparticle catalysts for ammonia decomposition. The obtained precursors and catalysts were characterized by means of X-ray powder diffraction (XRD), temperature-programmed reduction (H-2-TPR), X-ray photoelectron spectroscopy (XPS), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), and so on. All of the precursors formed hydrotalcite-like phase, which consisted of Li-Al-(Co) HTlc and/or Co-Al HTlc dependent on the Co content. Upon calcination at 500 degrees C, HTlc decomposed into an Al-substituted Co3O4 spinel oxide, as confirmed by two distinctly separated reduction steps in H-2-TPR. Following reduction at 700 degrees C, well-dispersed Co metal nanoparticles with an average particle size of similar to 9.2-12.4 nm were obtained. It was suggested that the incorporation of Al3+ into Co3O4 led to a strong interaction between cobalt and aluminum, which suppressed the crystal growth of Co3O4 and the sintering of Co metal during the thermal treatments, resulting in good Co dispersion. The optimal LiAlCo(1.5) catalyst showed superior activity than that prepared by impregnation method, giving almost complete conversion of ammonia at 575 degrees C under a space velocity of 5,000 mL g(cat)(-1) h(-1). More importantly, this catalyst maintained stable activity at 625 degrees C for 100 h, exhibiting high stability and sintering resistance. The good catalytic performance was attributed to the high Co metal dispersion and strong metal-support interaction benefiting from the uniform distribution of cobalt in the HTlc precursor. These results demonstrate the applicability of HTlc to the preparation of metal catalysts with improved dispersion and thermal stability.
Keyword ：
Catalytic ammonia decomposition Catalytic ammonia decomposition Cobalt catalyst Cobalt catalyst Hydrogen production Hydrogen production Hydrotalcite-like compounds Hydrotalcite-like compounds
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| GB/T 7714 | Wei, Xiaofeng , Su, Jiaxin , Ji, Yuyin et al. Hydrotalcite-derived well-dispersed and thermally stable cobalt nanoparticle catalyst for ammonia decomposition [J]. | MOLECULAR CATALYSIS , 2025 , 572 . |
| MLA | Wei, Xiaofeng et al. "Hydrotalcite-derived well-dispersed and thermally stable cobalt nanoparticle catalyst for ammonia decomposition" . | MOLECULAR CATALYSIS 572 (2025) . |
| APA | Wei, Xiaofeng , Su, Jiaxin , Ji, Yuyin , Huang, Hongyang , Li, Dalin , Fang, Huihuang et al. Hydrotalcite-derived well-dispersed and thermally stable cobalt nanoparticle catalyst for ammonia decomposition . | MOLECULAR CATALYSIS , 2025 , 572 . |
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Achieving green ammonia (NH3) synthesis requires developing effective catalysts under mild conditions. However, the competitive adsorption of N-2 and H-2, as well as the strong binding of N-containing intermediates on the catalyst, greatly inhibits the active sites for efficient NH3 synthesis. Here, we constructed a series of ZrH2-modified Fe catalysts with dual active sites to address these issues and realized efficient NH3 synthesis under mild conditions. Our study shows that ZrH2 can not only provide active sites for H-2 activation but also transfer electrons to Fe sites for accelerating N-2 activation. The interaction between Fe and ZrH2 over 40ZrH(2)-Fe leads to a decrease in work function and a downward shift of the d-band center, which is conducive to N-2 activation and NH3 desorption, respectively. The utilization of distinct sites for activating different reactants can avoid the competitive adsorption of N-2 and H-2, leading to excellent NH3 synthesis activity of the 40 wt.% ZrH2-mediated Fe catalyst. As a result, 40ZrH(2)-Fe exhibits a high NH3 synthesis rate of 23.3 mmol g(cat)(-1) h(-1) at 400 degrees C and 1 MPa and robust stability during 100 h time-on-stream.
Keyword ：
ammonia synthesis ammonia synthesis competitive adsorption competitive adsorption dual-site catalyst dual-site catalyst N-2 activation N-2 activation synergistic effect synergistic effect
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| GB/T 7714 | Zhang, Shiyong , Zhang, Mingyuan , Zhang, Tianhua et al. A dual-site Fe-based catalyst for efficient ammonia synthesis under mild conditions [J]. | SCIENCE CHINA-CHEMISTRY , 2025 , 68 (4) : 1576-1584 . |
| MLA | Zhang, Shiyong et al. "A dual-site Fe-based catalyst for efficient ammonia synthesis under mild conditions" . | SCIENCE CHINA-CHEMISTRY 68 . 4 (2025) : 1576-1584 . |
| APA | Zhang, Shiyong , Zhang, Mingyuan , Zhang, Tianhua , Sun, Jizhen , Li, Jiaxin , Su, Kailin et al. A dual-site Fe-based catalyst for efficient ammonia synthesis under mild conditions . | SCIENCE CHINA-CHEMISTRY , 2025 , 68 (4) , 1576-1584 . |
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氨作为高效的储氢载体,具有替代化石燃料能源的巨大潜力.利用成品油管道增输液氨,可充分利用管道运能,节约输送成本.液氨-成品油混合体系的相平衡问题对于管输工艺具有重要意义,此外减压过程会引起更为复杂的相变问题.针对液氨-成品油混合体系进行实验研究,初步阐述了氨/油(体积比)和含水率对液氨-成品油混合体系相平衡和减压相变的影响规律,得到了液氨-成品油混合体系的相平衡压力,揭示了液氨-成品油混合体系减压过程的相变现象.研究发现,在0～30℃,氨-油混合体系的平衡蒸气压小于两种纯组分的饱和蒸气压,而在-2～0℃大于纯液氨的饱和蒸气压,并在氨/油(体积比)为70∶30时达到最大值.同时水分的存在会降低氨-油混合体系的平衡蒸气压.氨-油无水混合体系在减压过程中会产生气泡,压力越低气泡增多,发泡行为越剧烈.含水液氨-成品油混合体系在减压过程中会产生液滴群,并慢慢变大且聚并,在减压结束后聚并形成大液滴留在底部.上述研究成果对成品油管道增输液氨技术发展和应用具有重要的理论指导意义.
Keyword ：
成品油 成品油 液氨 液氨 相变 相变 相平衡 相平衡
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| GB/T 7714 | 黄鑫 , 李逸龙 , 李卫东 et al. 液氨-成品油混合体系相平衡及减压相变规律研究 [J]. | 化工学报 , 2025 , 76 (1) : 71-80 . |
| MLA | 黄鑫 et al. "液氨-成品油混合体系相平衡及减压相变规律研究" . | 化工学报 76 . 1 (2025) : 71-80 . |
| APA | 黄鑫 , 李逸龙 , 李卫东 , 施鸿翔 , 尹鹏博 , 李臻超 et al. 液氨-成品油混合体系相平衡及减压相变规律研究 . | 化工学报 , 2025 , 76 (1) , 71-80 . |
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Catalytic hydrolysis was considered as an efficient technology to remove carbonyl sulfide (COS). The introduction of oxygen vacancy (Ov) is a promising strategy to improve the catalytic performance of COS hydrolysis by promoting the adsorption and activation of reactants. Herein, we reported a Cu-doped TiO2 nanoflower with abundant oxygen vacancies for COS hydrolysis. The Cu species successfully entered the crystal lattice of TiO2 and induced more oxygen vacancies than pure TiO2. The Ov sites can effectively reduce the adsorption and activation energy of COS and H2O. Benefiting from the ample Ov sites, the resulting CuTiO2-δ-F achieved nearly 100 % COS conversion at 70 °C and 93.5 % H2S yield at 130 °C, which is better than that of pure TiO2. Furthermore, in situ FT-IR measurements and density functional theory (DFT) calculations were performed to reveal the reaction pathway in COS hydrolysis. © 2024 Elsevier B.V.
Keyword ：
Activation energy Activation energy Copper Copper Copper compounds Copper compounds Density functional theory Density functional theory Hydrolysis Hydrolysis Infrared imaging Infrared imaging Nanoflowers Nanoflowers Oxygen vacancies Oxygen vacancies Sulfur compounds Sulfur compounds Titanium dioxide Titanium dioxide
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| GB/T 7714 | Zheng, Xiaohai , Huang, Rui , Li, Bang et al. Oxygen vacancies-promoted removal of COS via catalytic hydrolysis over CuTiO2-δ nanoflowers [J]. | Chemical Engineering Journal , 2024 , 492 . |
| MLA | Zheng, Xiaohai et al. "Oxygen vacancies-promoted removal of COS via catalytic hydrolysis over CuTiO2-δ nanoflowers" . | Chemical Engineering Journal 492 (2024) . |
| APA | Zheng, Xiaohai , Huang, Rui , Li, Bang , Jiang, Weiping , Shen, Lijuan , Lei, Ganchang et al. Oxygen vacancies-promoted removal of COS via catalytic hydrolysis over CuTiO2-δ nanoflowers . | Chemical Engineering Journal , 2024 , 492 . |
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To date, NH3 synthesis under mild conditions is largely confined to precious Ru catalysts, while nonprecious metal (NPM) catalysts are confronted with the challenge of low catalytic activity due to the inverse relationship between the N2 dissociation barrier and NHx (x = 1-3) desorption energy. Herein, we demonstrate NPM (Co, Ni, and Re)-mediated Mo2CTx MXene (where Tx denotes the OH group) to achieve efficient NH3 synthesis under mild conditions. In particular, the NH3 synthesis rate over Re/Mo2CTx and Ni/Mo2CTx can reach 22.4 and 21.5 mmol g-1 h-1 at 400 °C and 1 MPa, respectively, higher than that of NPM-based catalysts and Cs-Ru/MgO ever reported. Experimental and theoretical studies reveal that Mo4+ over Mo2CTx has a strong ability for N2 activation; thus, the rate-determining step is shifted from conventional N2 dissociation to NH2* formation. NPM is mainly responsible for H2 activation, and the high reactivity of spillover hydrogen and electron transfer from NPM to the N-rich Mo2CTx surface can efficiently facilitate nitrogen hydrogenation and the subsequent desorption of NH3. With the synergistic effect of the dual active sites bridged by H-spillover, the NPM-mediated Mo2CTx catalysts circumvent the major obstacle, making NH3 synthesis under mild conditions efficient. © 2024 The Authors. Published by American Chemical Society.
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| GB/T 7714 | Zhou, Y. , Liang, L. , Wang, C. et al. Precious-Metal-Free Mo-MXene Catalyst Enabling Facile Ammonia Synthesis Via Dual Sites Bridged by H-Spillover [J]. | Journal of the American Chemical Society , 2024 , 146 (33) : 23054-23066 . |
| MLA | Zhou, Y. et al. "Precious-Metal-Free Mo-MXene Catalyst Enabling Facile Ammonia Synthesis Via Dual Sites Bridged by H-Spillover" . | Journal of the American Chemical Society 146 . 33 (2024) : 23054-23066 . |
| APA | Zhou, Y. , Liang, L. , Wang, C. , Sun, F. , Zheng, L. , Qi, H. et al. Precious-Metal-Free Mo-MXene Catalyst Enabling Facile Ammonia Synthesis Via Dual Sites Bridged by H-Spillover . | Journal of the American Chemical Society , 2024 , 146 (33) , 23054-23066 . |
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Herein, a variety of 2,6-diaminopyridine (DAP) derived nitrogen-doped hierarchically porous carbon (DAP-NHPC-T) prepared from carbonization-induced structure transformation of DAP-Zn-SiO2-P123 nanocomposites are reported, which are facilely prepared from solvent-free co-assembly of block copolymer templates P123 with pyridine-rich monomer of DAP, Zn(NO3)2 and tetramethoxysilane. In the pyrolysis process, P123 and SiO2 templates promote the formation of mesoporous and supermicroporous structures in the DAP-NHPC-T, while high-temperature volatilization of Zn contributed to generation of micropores. The DAP-NHPC-T possess large BET surface areas (≈956–1126 m2 g−1), hierarchical porosity with micro-supermicro-mesoporous feature and high nitrogen contents (≈10.44–5.99 at%) with tunable density of pyridine-based nitrogen sites (≈5.99–3.32 at%), exhibiting good accessibility and reinforced interaction with SO2. Consequently, the DAP-NHPC-T show high SO2 capacity (14.7 mmol g−1, 25 °C and 1.0 bar) and SO2/CO2/N2 IAST selectivities, extraordinary dynamic breakthrough separation efficiency and cycling stability, far beyond any other reported nitrogen-doped metal-free carbon. As verified by in situ spectroscopy and theoretical calculations, the pyridine-based nitrogen sites of the DAP-NHPC-T boost SO2 adsorption via the unique charge transfer, the adsorption mechanism and reaction model have been finally clarified. © 2024 Wiley-VCH GmbH.
Keyword ：
charge transfer charge transfer hierarchical porosity hierarchical porosity pyridine-based nitrogen sites pyridine-based nitrogen sites SO2 capture SO2 capture triple template directed synthesis triple template directed synthesis
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| GB/T 7714 | Zhang, G. , Liu, F. , Zhu, Q. et al. Triple Templates Directed Synthesis of Nitrogen-Doped Hierarchically Porous Carbons from Pyridine Rich Monomer as Efficient and Reversible SO2 Adsorbents [J]. | Small , 2024 , 20 (46) . |
| MLA | Zhang, G. et al. "Triple Templates Directed Synthesis of Nitrogen-Doped Hierarchically Porous Carbons from Pyridine Rich Monomer as Efficient and Reversible SO2 Adsorbents" . | Small 20 . 46 (2024) . |
| APA | Zhang, G. , Liu, F. , Zhu, Q. , Qian, H. , Zhong, S. , Tan, J. et al. Triple Templates Directed Synthesis of Nitrogen-Doped Hierarchically Porous Carbons from Pyridine Rich Monomer as Efficient and Reversible SO2 Adsorbents . | Small , 2024 , 20 (46) . |
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