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学者姓名：林立
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Abstract ：
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 , 71 (6) . |
| MLA | Zhang, Lixuan et al. "Multiscale modeling of a low-temperature NH3 decomposition reactor for precious metal reduction and temperature control" . | AICHE JOURNAL 71 . 6 (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 , 71 (6) . |
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As a carbon-free hydrogen (H2) carrier with the advantage of liquefaction storage and transportation, ammonia (NH3) is regarded as a competitive clean energy carrier for H2 production and power generation. This work designs a novel NH3-fueled hybrid power generation system, which combines ammonia decomposition reactor (ADR), proton exchange membrane fuel cell (PEMFC) and micro gas turbine (MGT) together with thermochemical recuperation for ADR. A system-level thermodynamic model has been developed to evaluate system performance with different optimization strategies. The model calculation reveals that the NH3 decomposition temperature drop from 500 degrees C to 350 degrees C can increase the energy efficiency from 33.5 % to 43.2 %, and two improved integration strategies have therefore been proposed. Mixing a part of NH3 with the exhaust gas from PEMFC anode to fuel MGT can reduce the NH3 decomposition demand and makes better use of waste heat from MGT. Integrating ADR with MGT combustor can lower the exhaust gas temperature and the efficiency loss when using high temperature NH3 decomposition catalyst. Both strategies can improve the system energy efficiency, to about 40% and 44% when NH3 decomposition temperature is 500 degrees C and 350 degrees C, respectively, and demonstrate better flexibility in adapting to changes in NH3 decomposition temperature.
Keyword ：
Ammonia decomposition Ammonia decomposition Ammonia energy Ammonia energy Power generation system Power generation system Proton exchange membrane fuel cell Proton exchange membrane fuel cell Thermochemical recuperation Thermochemical recuperation
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| GB/T 7714 | Lin, Li , Sun, Mingwei , Wu, Yifan et al. High-efficiency ammonia-fueled hybrid power generation system combining ammonia decomposition, proton exchange membrane fuel cell and micro gas turbine: A thermodynamic model and performance optimization [J]. | ENERGY CONVERSION AND MANAGEMENT , 2025 , 325 . |
| MLA | Lin, Li et al. "High-efficiency ammonia-fueled hybrid power generation system combining ammonia decomposition, proton exchange membrane fuel cell and micro gas turbine: A thermodynamic model and performance optimization" . | ENERGY CONVERSION AND MANAGEMENT 325 (2025) . |
| APA | Lin, Li , Sun, Mingwei , Wu, Yifan , Huang, Wenshi , Wu, Zeyun , Wang, Dabiao et al. High-efficiency ammonia-fueled hybrid power generation system combining ammonia decomposition, proton exchange membrane fuel cell and micro gas turbine: A thermodynamic model and performance optimization . | ENERGY CONVERSION AND MANAGEMENT , 2025 , 325 . |
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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%).
Keyword ：
Fixed-bed reactor Fixed-bed reactor Integrated heat transfer Integrated heat transfer Radial flow reactor Radial flow reactor Water gas shift reaction Water gas shift reaction
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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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电动汽车接入可再生能源微电网有利于减少环境污染,改善能源结构.但是电动汽车充电负荷的随机波动性为微电网运行优化调度带来很大的困难.为了实现微电网的高效稳定运行,本文提出一种基于改进樽海鞘算法(ISSA)的含电动汽车的可再生能源微电网优化调度方法.针对基本樽海鞘算法在进化后期由于种群多样性的缺失而易出现局部收敛或算法早熟的问题,改进算法首先利用Tent混沌序列产生初始种群,以增强种群的多样性;其次,通过设置动态控制参数来调节算法的全局探索与局部开发之间的平衡,提高算法的收敛性;同时,引入正交重心反向学习策略改进樽海鞘个体的位置信息更新,从而,强化算法的全局寻优能力以克服算法早熟收敛,以避免陷入局部极值,从而全面提高算法的优化性能;最后,将该算法用于求解含电动汽车微电网经济优化问题,在孤岛和并网两种模式下分别进行仿真实验,并与其他算法的优化结果进行比较.仿真结果表明,基于ISSA算法的优化结果均优于其他方法,两种模式下运行成本最大降幅分别为29.1％和20.0％,证明了所提算法的可行性和实用性.
Keyword ：
Tent混沌映射 Tent混沌映射 微电网 微电网 樽海鞘算法 樽海鞘算法 电动汽车 电动汽车 经济调度 经济调度 重心反向学习 重心反向学习
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| GB/T 7714 | 赵超 , 付斌 , 林立 . 基于改进樽海鞘算法的含电动汽车微电网经济优化调度 [J]. | 控制理论与应用 , 2025 , 42 (1) : 167-180 . |
| MLA | 赵超 et al. "基于改进樽海鞘算法的含电动汽车微电网经济优化调度" . | 控制理论与应用 42 . 1 (2025) : 167-180 . |
| APA | 赵超 , 付斌 , 林立 . 基于改进樽海鞘算法的含电动汽车微电网经济优化调度 . | 控制理论与应用 , 2025 , 42 (1) , 167-180 . |
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Partial pre-decomposition of ammonia is an effective means to improve the combustion performance of ammonia. This work conducts numerical simulation on an ammonia diffusion combustion device based on ammonia pre-decomposition strategy. The effects of ammonia pre-decomposition ratio, equivalence ratio, and residual heat from ammonia pre-decomposition on combustion and pollutant emission characteristics are analyzed. As the ammonia pre-decomposition ratio increases, the flame temperature increases, the high-temperature zone of the flame moves closer to the nozzle, and the NOx emissions decrease. NO emission dominates in NOx emissions, increasing first and then decreasing as the equivalence ratio increases. N2O emission mainly occurs under low ammonia pre-decomposition ratio and low equivalence ratio conditions, and hardly exists after the ammonia pre-decomposition ratio reaches over 50%. Preheating fuel with residual heat from ammonia decomposition can stabilize combustion and significantly decrease ammonia leakage without increasing NOx emissions when the ammonia pre-decomposition ratio does not exceed 30%. This study shows that increasing the ammonia pre-decomposition ratio and equivalence ratio can effectively improve the combustion and pollutant emission characteristics of ammonia, and the residual heat from ammonia decomposition should be fully utilized under small proportion ammonia pre-decomposition conditions. ©2025 Chin.Soc.for Elec.Eng.
Keyword ：
Ammonia Ammonia Premixed flames Premixed flames
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| GB/T 7714 | Huang, Wenshi , Wang, Zhixiong , Lin, Li et al. Simulation on Ammonia Diffusion Combustion Based on Ammonia Pre-decomposition [J]. | Proceedings of the Chinese Society of Electrical Engineering , 2025 , 45 (2) : 479-488 . |
| MLA | Huang, Wenshi et al. "Simulation on Ammonia Diffusion Combustion Based on Ammonia Pre-decomposition" . | Proceedings of the Chinese Society of Electrical Engineering 45 . 2 (2025) : 479-488 . |
| APA | Huang, Wenshi , Wang, Zhixiong , Lin, Li , Wu, Zeyun , Wang, Dabiao , Luo, Yu et al. Simulation on Ammonia Diffusion Combustion Based on Ammonia Pre-decomposition . | Proceedings of the Chinese Society of Electrical Engineering , 2025 , 45 (2) , 479-488 . |
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氨部分预分解是改善氨的燃烧性能的有效手段,但对于氨预分解条件的影响仍缺乏系统的研究.该文针对基于氨预分解策略的氨扩散燃烧装置开展数值模拟研究,以分析氨预分解比例、当量比和氨分解余热对燃烧及污染物排放特性的影响.结果表明,随着氨预分解比例提高,火焰温度提高,火焰高温区更靠近喷嘴,NOx排放量下降;NO排放在NOx中占主导,并随着当量比的提高先增大后减小;N2O排放主要发生在低氨预分解比例、低当量比条件下,在氨预分解比例达到50％后基本消失;利用氨分解余热预热燃料有助于稳定燃烧,并在氨预分解比例不超过30％时,明显减少氨泄漏而未增加NOx排放.研究表明,提高氨预分解比例和当量比能有效改善氨燃烧及污染物排放特性,而在小比例氨预分解条件下应充分利用氨分解的余热.
Keyword ：
NOx排放 NOx排放 当量比 当量比 数值模拟 数值模拟 氨分解 氨分解 氨氢燃烧 氨氢燃烧
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| GB/T 7714 | 黄文仕 , 王智雄 , 林立 et al. 基于氨预分解的氨扩散燃烧模拟研究 [J]. | 中国电机工程学报 , 2025 , 45 (2) : 479-488,中插7 . |
| MLA | 黄文仕 et al. "基于氨预分解的氨扩散燃烧模拟研究" . | 中国电机工程学报 45 . 2 (2025) : 479-488,中插7 . |
| APA | 黄文仕 , 王智雄 , 林立 , 伍泽赟 , 王大彪 , 罗宇 et al. 基于氨预分解的氨扩散燃烧模拟研究 . | 中国电机工程学报 , 2025 , 45 (2) , 479-488,中插7 . |
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Ammonia is an exceptional fuel for solid oxide fuel cells (SOFCs), because of the high content of hydrogen and the advantages of carbon neutrality. However, the challenge lies in its unsatisfactory performance at intermediate temperatures (500-600 degrees C), impeding its advancement. An electrolyte-supported proton-ceramic fuel cell (PCFC) was fabricated employing BaZr0.1Ce0.7Y0.2O3-delta (BZCY) as the electrolyte and Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) as the cathode. In this study, the performance of PCFC using NH3 as fuel within an operating temperature range of 500-700 degrees C was improved by adding an M(Ni,Ru)/CeO(2 )catalyst layer to reconstruct the anode surface. The electrochemical performance of direct ammonia PCFC (DA-PCFC) were improved to different extents. Compared to H-2 as fuel, the degradation ratio of peak power densities (PPDs) of Ni/CeO2-loaded PCFC fueled with NH3 decreased at 700-500 degrees C, with a decrease to 13.3% at 700 degrees C and 30.7% at 500 degrees C. The findings indicate that Ru-based catalysts have a greater promise for direct ammonia SOFCs (DA-SOFCs) at operating temperatures below 600 degrees C. However, the enhancement effect becomes less significant above 600 degrees C when compared to Ni-based catalysts.
Keyword ：
ammonia ammonia anode anode M/CeO2 catalyst layer M/CeO2 catalyst layer proton-ceramic fuel cell (PCFC) proton-ceramic fuel cell (PCFC)
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| GB/T 7714 | Li, Xiaoxiao , Chen, Jiangping , Huang, Yunyun et al. Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer [J]. | FRONTIERS IN ENERGY , 2024 , 18 (6) : 875-884 . |
| MLA | Li, Xiaoxiao et al. "Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer" . | FRONTIERS IN ENERGY 18 . 6 (2024) : 875-884 . |
| APA | Li, Xiaoxiao , Chen, Jiangping , Huang, Yunyun , Fang, Huihuang , Chen, Chongqi , Zhong, Fulan et al. Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer . | FRONTIERS IN ENERGY , 2024 , 18 (6) , 875-884 . |
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The ammonia decomposition for the production of carbon-free hydrogen has triggered great attention yet still remains challenging due to its sluggish kinetics, posting the importance of precise design of efficient catalysts for ammonia decomposition under low temperatures. Constructing the metal-support interaction and interface is one of the most important strategies for promoting catalysts. In this work, by coating ceria onto the Ni nanoparticles (NPs), we discover that the Ni-CeO2 interfaces create an exceptional effect to enhance the catalytic decomposition of ammonia by over 10 folds, compared with the pristine Ni. The kinetic analysis demonstrates that the recombinative N2 desorption is the rate-determining step (RDS) and the Ni-CeO2 interface greatly increases the RDS. Based on these understandings, a strategy to fabricate the Ni/CeO2 catalyst with abundant Ni-Ce-O interfaces via one-pot sol-gel method was employed (hereafter denoted to s-Ni/CeO2). The s-Ni/CeO2 catalyst shows a high activity for ammonia decomposition, achieving a H2 formation rate of 10.5 mmol gcat-1 min-1 at 550 degrees C. Combined with a series of characterizations, the relationship between the catalyst structure and the performance was investigated for further understanding the effect of metal-oxide interfaces.
Keyword ：
Ammonia decomposition Ammonia decomposition Cerium oxide Cerium oxide Metal -oxide interfaces Metal -oxide interfaces Metal-support interaction Metal-support interaction Nickel Nickel
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| GB/T 7714 | Chen, Jiangping , Ren, Hongju , Wu, Kai et al. Boosting hydrogen production of ammonia decomposition via the construction of metal-oxide interfaces [J]. | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY , 2024 , 43 (2) . |
| MLA | Chen, Jiangping et al. "Boosting hydrogen production of ammonia decomposition via the construction of metal-oxide interfaces" . | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY 43 . 2 (2024) . |
| APA | Chen, Jiangping , Ren, Hongju , Wu, Kai , Fang, Huihuang , Chen, Chongqi , Lin, Li et al. Boosting hydrogen production of ammonia decomposition via the construction of metal-oxide interfaces . | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY , 2024 , 43 (2) . |
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Ammonia decomposition for onsite hydrogen production has been regarded as an important reaction which links to efficient hydrogen storage, transport and utilization. However, it still remains challenging to develop efficient catalysts with robust stability for ammonia decomposition. Herein, an integrated strategy was employed to synthesize Ru/SiO2@N-CS via wrapping a thin layer of N-doped carbon onto the SiO2 sphere, following the anchor of Ru nanoparticles (NPs) onto the support. The obtained Ru/SiO2@N-CS (Ru loading: 1 wt%) shows a promising performance for ammonia decomposition, reaching 94.5 % at 550 degrees C with a gas hourly space velocity (GHSV) of 30 000 mL gcat-1 h- 1. The combination of the SiO2 as the core prevents the degradation of N-doped carbon layers and then enhance the durability of the catalysts, remaining stable after 50 h at evaluated temperatures. Adequate characterizations were used to illustrate the effect of microchemical environment on ammonia decomposition activity of Ru/SiO2@N-CS catalyst under different calcination atmosphere and the correlation between structure and performance.
Keyword ：
Ammonia decomposition Ammonia decomposition N-doped carbon N-doped carbon Ruthenium Ruthenium Stability Stability
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| GB/T 7714 | Huang, Yunyun , Ren, Hongju , Fang, Huihuang et al. Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan [J]. | APPLIED SURFACE SCIENCE , 2024 , 669 . |
| MLA | Huang, Yunyun et al. "Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan" . | APPLIED SURFACE SCIENCE 669 (2024) . |
| APA | Huang, Yunyun , Ren, Hongju , Fang, Huihuang , Ouyang, Dong , Chen, Chongqi , Luo, Yu et al. Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan . | APPLIED SURFACE SCIENCE , 2024 , 669 . |
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Ammonia decomposition is a structure-sensitive reaction, so the difference in structure of Ammonia decomposition is a structure-sensitive reaction, so the difference in structure of similar catalysts may have a great impact on the catalytic performance of ammonia decomposition reaction. However, it is not clear which structural properties can play a role in ammonia decomposition reaction and the degree of influence on catalytic performance. To explore this question, ammonia evaporation-hydrothermal (AEH), impregnation (IM), and evaporation-induced self-assembly (EISA) methods were used to synthesize Ni/SiO2 catalysts to obtain carbon-free hydrogen from catalyzing NH3 decomposition reaction. Among the three, the Ni/SiO2 catalyst synthesized via ammonia evaporation-hydrothermal method is the smallest in terms of Ni nanoparticles (similar to 3.0 nm) and the strongest Ni-SiO2 interaction. For ammonia decomposition, it is the highest in activity and thermal stability. The NH3 conversion at 650 degrees C and 30 000 mL g(cat)(-1)h(-1) (GHSV) over Ni/SiO2-AEH was close to 90 % and remained stable in an evaluation period of 60 h.
Keyword ：
Ammonia decomposition Ammonia decomposition Hydrogen production Hydrogen production Metal-support interaction Metal-support interaction Ni catalyst Ni catalyst
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| GB/T 7714 | Ren, Hongju , Cheng, Jinxing , Fang, Huihuang et al. Phyllosilicate-derived Ni catalysts with small nanoparticle size and strong metal-support interaction for efficient and robust decomposition of ammonia [J]. | APPLIED CATALYSIS A-GENERAL , 2023 , 664 . |
| MLA | Ren, Hongju et al. "Phyllosilicate-derived Ni catalysts with small nanoparticle size and strong metal-support interaction for efficient and robust decomposition of ammonia" . | APPLIED CATALYSIS A-GENERAL 664 (2023) . |
| APA | Ren, Hongju , Cheng, Jinxing , Fang, Huihuang , Zhong, Fulan , Chen, Chongqi , Lin, Li et al. Phyllosilicate-derived Ni catalysts with small nanoparticle size and strong metal-support interaction for efficient and robust decomposition of ammonia . | APPLIED CATALYSIS A-GENERAL , 2023 , 664 . |
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