Query：
学者姓名：林建新
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
The development of advanced catalysts is critical to realize efficient ammonia (NH3) synthesis under mild conditions. However, the activation of an inert N equivalent to N bond in N2 molecules is the primary hindrance to NH3 synthesis, and hydrogen poisoning is another major and a serious problem, especially in Ru-based catalysts. Here, we develop an H-ZSM-5-supported Ru-based catalyst (Ce-Ru/HZ) via decorating with a CeO2 promoter to realize efficient NH3 synthesis. Our study shows that the Ce species can serve as an electron donor to enrich the electron density of Ru sites, thus accelerating N2 activation for NH3 synthesis. Meanwhile, the interaction of Ru and Ce can alleviate the effect of hydrogen poisoning on Ru sites. Consequently, the 16 wt % Ce-promoted Ru/HZ catalyst displays a superior NH3 synthesis rate and long-term stability of more than 550 h at 400 degrees C and 1 MPa.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Tianhua , Yue, Kexin , Mo, Jiangyang et al. Enhanced Ammonia Synthesis Performance over Ru-Based Catalysts via the Addition of Ce Promoter [J]. | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2025 , 64 (18) : 9070-9077 . |
| MLA | Zhang, Tianhua et al. "Enhanced Ammonia Synthesis Performance over Ru-Based Catalysts via the Addition of Ce Promoter" . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 64 . 18 (2025) : 9070-9077 . |
| APA | Zhang, Tianhua , Yue, Kexin , Mo, Jiangyang , Zhang, Mingyuan , Zhu, Jie , Lin, Ruting et al. Enhanced Ammonia Synthesis Performance over Ru-Based Catalysts via the Addition of Ce Promoter . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2025 , 64 (18) , 9070-9077 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
High impedance faults (HIFs) are difficult to detect because of low amplitude of the current signal. The interference from switching cases also jeopardizes the reliability of HIF detection (HIFD). Moreover, a long detection time is more likely to cause accidents. To diagnose HIFs promptly and precisely, a time-adaptive (TA) HIFD model is proposed. Firstly, the zero-sequence current data of the faulty feeder are processed into a variable length training set to train gated recurrent unit (GRU) networks. Secondly, a cost-sensitive method employed to train two biased GRU models with contrary preference. Then the two models are combined into high reliability evaluation model. The predicted reliability depends on the consistency of predicted results of the two models. Reliable results are output, while the unreliable results are set aside. To prevent untimely detection, an equal GRU-based model is activated when reaching the time threshold. Delayed judgment improves accuracy of HIFD and reduces probability of harm caused by untimely detection. The performance of proposed method validated by simulated data, and tested in a realistic 10 kV distribution network experimental system. In the true type 10kV system, the TA HIFD model can achieve an accuracy of 96.73% with average detection time of 4.315ms.
Keyword ：
cost-sensitive cost-sensitive fault detection fault detection gated recurrent unit (GRU) gated recurrent unit (GRU) high impedance fault (HIF) high impedance fault (HIF) time-adaptive (TA) time-adaptive (TA) variable mode decomposition (VMD) variable mode decomposition (VMD)
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lin, Jianxin , Lin, Xiwen , Wang, Huaiyuan et al. Time-adaptive High Impedance Fault Detection Model Based on Cost-sensitive Method [J]. | ELECTRIC POWER SYSTEMS RESEARCH , 2025 , 247 . |
| MLA | Lin, Jianxin et al. "Time-adaptive High Impedance Fault Detection Model Based on Cost-sensitive Method" . | ELECTRIC POWER SYSTEMS RESEARCH 247 (2025) . |
| APA | Lin, Jianxin , Lin, Xiwen , Wang, Huaiyuan , Guo, Moufa . Time-adaptive High Impedance Fault Detection Model Based on Cost-sensitive Method . | ELECTRIC POWER SYSTEMS RESEARCH , 2025 , 247 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
氨是重要的化肥原料,也是颇具潜力的氢能源载体,对于可再生能源的储存、运输和终端利用至关重要.然而,传统Haber-Bosch工艺合成氨的反应条件苛刻,需要高温高压条件,并消耗大量化石能源及排放大量二氧化碳.可再生能源电解水制氢耦合温和合成氨新技术(eHB),不仅能实现可再生能源电力的"消纳和调峰",而且可进行低成本、跨地域长距离存储运输,并可将"绿氨"与氢能产业相结合.然而,现有的高温高压合成氨催化剂与eHB工艺相不匹配,因此,迫切需要开发温和条件下高效合成氨催化剂技术,以实现可再生能源电力电解制氢体系和合成氨技术互补融合.目前,虽然助剂对于Ru基纳米簇(≥l nm)合成氨催化剂的影响规律已得到了广泛研究,但它们对于Ru原子簇催化剂的作用机制尚不清楚,需要进一步揭示. 本文考察了Ba及Ce助剂对Ru原子簇催化剂的影响规律,并分析了其作用机制.首先,通过简单的浸渍法将Ba和/或Ce物种掺杂到Ru原子簇催化剂(2 wt％Ru ACCs),制得Ba/Ce/2 wt％Ru ACCs催化剂;然后,通过一系列实验考察了这些催化剂的合成氨性能,并利用多种表征手段对其进行了深入分析.合成氨性能测试结果表明,添加Ba和Ce助剂后,2 wt％Ru ACCs催化剂的合成氨速率明显提高,在400℃和1 MPa下,Ba/Ce/2 wt％Ru ACCs催化剂的合成氨反应速率达到56.2 mmolNH3 gcat-1 h1,是2 wt％Ru ACCs的7.5倍,且催化剂表现出较好的稳定性,在稳定运行140 h后活性未见明显降低.球差校正电子显微镜和X射线吸收精细结构谱结果表明,负载Ba和/或Ce后,Ru以Ru3原子簇形式存在.X射线吸收近边结构谱和X射线光电子能谱结果表明,Ru与Ba及Ce物种之间存在较强的簇-金属氧化物助剂电子相互作用,可促进电子转移到Ru物种,形成富电子状态的Ru,进而促使电子转移到N2的π*反键轨道,提高温和条件下合成氨反应速率.利用25％N2+75％D2气氛下的原位红外光谱研究催化剂的合成氨反应机理,结果表明,在Ba/Ce/2 wt％Ru ACCs催化剂表面同时检测到N2D2物种和N2Dx物种的振动吸收峰,说明添加Ba和/或Ce物种没有改变Ru原子簇催化剂活化N2的方式,N2仍是通过加氢的路径合成氨. 综上,本文考察了助剂对Ru原子簇的影响规律,揭示了其作用机制,为设计高效的温和条件合成氨催化剂提供参考.
Keyword ：
N2活化 N2活化 助剂 助剂 原子簇 原子簇 合成氨 合成氨 电子相互作用 电子相互作用
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 张天华 , 胡海慧 , 李嘉欣 et al. 簇-金属氧化物助剂电子相互作用调控的Ru原子簇催化剂用于温和条件下合成氨反应 [J]. | 催化学报 , 2024 , 60 (5) : 209-218 . |
| MLA | 张天华 et al. "簇-金属氧化物助剂电子相互作用调控的Ru原子簇催化剂用于温和条件下合成氨反应" . | 催化学报 60 . 5 (2024) : 209-218 . |
| APA | 张天华 , 胡海慧 , 李嘉欣 , 高迎龙 , 李玲玲 , 张明远 et al. 簇-金属氧化物助剂电子相互作用调控的Ru原子簇催化剂用于温和条件下合成氨反应 . | 催化学报 , 2024 , 60 (5) , 209-218 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The effects of promoters on Ru nanoparticles (>= 2 nm) catalysts for NH3 synthesis have been extensively elaborated, but their roles on ultrasmall Ru nanoclusters (NCs, 1-2 nm) remain largely unknown and need to be further uncovered. Herein, a series of K-promoted MgO supported Ru NCs were synthesized and investigated for NH3 synthesis. The addition of 5wt.%K onto Ru/MgO NCs leads to a significantly high NH3 synthesis rate of 21.7 mmol(NH3) g(cat)(-1)h(-1) at 400 degrees C and 0.2 MPa, close to the thermodynamic equilibrium. Out studies reveal that anchoring K onto Ru NCs can increase the electron density and cause an upshift of the d-band center of Ru entities. Moreover, the addition of K regulates the hydrogen affinity and accelerates the migration of hydrogen from the Ru NCs surface to MgO support, which is crucial in avoiding the hydrogen poisoning effect on Ru NCs. With the synergistic effect of the Ru NCs sites bridged by H-spillover, makes the K-mediated Ru/MgO NCs catalysts efficient for NH3 synthesis at mild conditions.
Keyword ：
Ammonia synthesis Ammonia synthesis Electronic structure Electronic structure Hydrogen spillover Hydrogen spillover Oxygen vacancies Oxygen vacancies Ultrasmall Ru nanoclusters Ultrasmall Ru nanoclusters
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Peng, Xuanbei , Luo, Yongjin , Zhang, Tianhua et al. Potassium promoter regulates electronic structure and hydrogen spillover of ultrasmall Ru nanoclusters catalyst for ammonia synthesis [J]. | CHEMICAL ENGINEERING SCIENCE , 2024 , 292 . |
| MLA | Peng, Xuanbei et al. "Potassium promoter regulates electronic structure and hydrogen spillover of ultrasmall Ru nanoclusters catalyst for ammonia synthesis" . | CHEMICAL ENGINEERING SCIENCE 292 (2024) . |
| APA | Peng, Xuanbei , Luo, Yongjin , Zhang, Tianhua , Deng, Jinxiu , Zhou, Yanliang , Li, Jiaxin et al. Potassium promoter regulates electronic structure and hydrogen spillover of ultrasmall Ru nanoclusters catalyst for ammonia synthesis . | CHEMICAL ENGINEERING SCIENCE , 2024 , 292 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The development of a bimetallic catalyst for ammonia synthesis using nonprecious metals such as Co, Fe, and Mo has attracted wide attention. In this work, because of the enhancement of the exposed Co species on the surface of the Co-Fe bimetallic catalyst through the introduction of Co into Fe-CeO2 by the impregnation method, the amount of hydrogen adsorbed on the metal surface would enhance, and the hydrogen spillover could strengthen. As a result, the as-prepared sample shows much higher ammonia synthesis activity than other Co-Fe bimetallic catalysts or monometallic samples. This finding not only provides a way for the development of bimetallic catalysts using nonprecious metals for ammonia synthesis but also helps design other bimetallic catalysts for hydrogen-involving reactions.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhong, Guoqing , Liu, Yang , Yu, Shitong et al. Strengthening Hydrogen Spillover in Ceria-Supported Co-Fe Bimetallic Catalysts for Boosting Ammonia Synthesis [J]. | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2024 , 63 (12) : 5089-5096 . |
| MLA | Zhong, Guoqing et al. "Strengthening Hydrogen Spillover in Ceria-Supported Co-Fe Bimetallic Catalysts for Boosting Ammonia Synthesis" . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 63 . 12 (2024) : 5089-5096 . |
| APA | Zhong, Guoqing , Liu, Yang , Yu, Shitong , Zhang, Chuanfeng , Ni, Jun , Lin, Jianxin et al. Strengthening Hydrogen Spillover in Ceria-Supported Co-Fe Bimetallic Catalysts for Boosting Ammonia Synthesis . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2024 , 63 (12) , 5089-5096 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Ammonia (NH3) is an excellent candidate for hydrogen storage and transport. However, producing NH3 under mild conditions is a long-term, arduous task. Atomic cluster catalysts (ACCs) have been shown to be effective for catalytic N2-to-NH3 conversion, opening the door to the development of efficient catalysts under mild conditions. Still, ACC formation with thermally stable catalytic sites remains a challenge because of their high surface free energy. Herein, we report anchoring Ba and/or Ce onto Ru ACCs (2 wt% Ru atomic clusters supported on N-doped carbon) to form so-called clusters-metal oxide promoters electronic interaction (CMEI) to stabilize the Ru atomic clusters. The resulting Ba/Ce/Ru ACCs significantly boost the NH3 synthesis rate to 56.2 mmolNH3 gcat-1 h-1 at 400 degrees C and 1 MPa, which is 7.5-fold higher than that of Ru ACC. The strengthened CMEI between the Ba/Ce and Ru atomic clusters across the Ba/Ce/Ru ACC enables electron transfer from Ba and/or Ce to Ru atomic clusters. As such, the electron-enriched Ru atom could facilitate electron transfer to N equivalent to N bond pi* orbitals, which would weaken the N equivalent to N bond and drive the eventual conversion of N2 to NH3. This study offers insight into the role of CMEI in Ru ACCs and provides an effective approach for designing stable atomic cluster catalysts for NH3 synthesis.
Keyword ：
Ammonia synthesis Ammonia synthesis Atomic cluster Atomic cluster Electronic interaction Electronic interaction N 2 activation N 2 activation Promoter Promoter
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Tianhua , Hu, Haihui , Li, Jiaxin et al. Tuning clusters-metal oxide promoters electronic interaction of Ru-based catalyst for ammonia synthesis under mild conditions [J]. | CHINESE JOURNAL OF CATALYSIS , 2024 , 60 : 209-218 . |
| MLA | Zhang, Tianhua et al. "Tuning clusters-metal oxide promoters electronic interaction of Ru-based catalyst for ammonia synthesis under mild conditions" . | CHINESE JOURNAL OF CATALYSIS 60 (2024) : 209-218 . |
| APA | Zhang, Tianhua , Hu, Haihui , Li, Jiaxin , Gao, Yinglong , Li, Lingling , Zhang, Mingyuan et al. Tuning clusters-metal oxide promoters electronic interaction of Ru-based catalyst for ammonia synthesis under mild conditions . | CHINESE JOURNAL OF CATALYSIS , 2024 , 60 , 209-218 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The amount of dopant used in conventional cases for improving catalytic performance is higher than 5%. In this work, a strategy to enhance the ammonia synthesis performance of a Ru/CeO2 catalyst by using trace Pr (0.1 mol%) is reported. Owing to the improvement of oxygen defects, Ce3+ concentration and interfaced Ru species, the hydrogen adsorption was enhanced, and the desorption of hydrogen species would be promoted. As a result, Ru/CeO2 with 0.1 mol% Pr shows 1.4 times higher ammonia synthesis rate and excellent stability compared to Ru/CeO2 or the sample with high Pr loading (50 mol% Pr). This study provides a new idea for the design of high-efficiency ammonia synthesis catalysts. The amount of dopant used in conventional cases for improving catalytic performance is higher than 5%.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Chunyan , Zhang, Zecheng , Zhou, Lingyun et al. Boosting the ammonia synthesis activity of ceria-supported Ru catalysts achieved through trace Pr addition [J]. | CHEMICAL COMMUNICATIONS , 2023 , 59 (77) : 11552-11555 . |
| MLA | Li, Chunyan et al. "Boosting the ammonia synthesis activity of ceria-supported Ru catalysts achieved through trace Pr addition" . | CHEMICAL COMMUNICATIONS 59 . 77 (2023) : 11552-11555 . |
| APA | Li, Chunyan , Zhang, Zecheng , Zhou, Lingyun , Fang, Biyun , Ni, Jun , Lin, Jianxin et al. Boosting the ammonia synthesis activity of ceria-supported Ru catalysts achieved through trace Pr addition . | CHEMICAL COMMUNICATIONS , 2023 , 59 (77) , 11552-11555 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Synergistic optimization of nitrogen dissociation and hydrogen transfer might be an efficient strategy to develop a highly efficient ammonia synthesis catalyst. Herein, the Ni-modified molybdenum nitride is used as the catalyst of ammonia synthesis. The presence of the highly dispersed Ni metal results in enhancement of nitrogen vacancy, causing the acceleration of the exchange and reaction of the lattice N species with the nitrogen species from the gaseous phase. In addition, the presence of Ni species facilitates the hydrogen transfer and spillover, as well as easy hydrogen release. As a result, the optimized molybdenum nitride catalyst with 0.1 wt% Ni shows a 2.5-times higher catalytic activity than that of the catalyst without Ni species at 400 degrees C owing to the coupling of nitrogen activation and hydrogen transfer effects. This general approach could inspire the rational design of other metal catalysts for ammonia synthesis.
Keyword ：
ammonia synthesis ammonia synthesis hydrogen transfer hydrogen transfer molybdenum nitride molybdenum nitride nickel nickel nitrogen vacancy nitrogen vacancy
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Jiahui , Zhang, Chuanfeng , Liu, Yang et al. Boosting ammonia synthesis over molybdenum nitride through nickel-mediated nitrogen activation and hydrogen transfer [J]. | AICHE JOURNAL , 2023 , 69 (11) . |
| MLA | Li, Jiahui et al. "Boosting ammonia synthesis over molybdenum nitride through nickel-mediated nitrogen activation and hydrogen transfer" . | AICHE JOURNAL 69 . 11 (2023) . |
| APA | Li, Jiahui , Zhang, Chuanfeng , Liu, Yang , Fang, Biyun , Ni, Jun , Lin, Jianxin et al. Boosting ammonia synthesis over molybdenum nitride through nickel-mediated nitrogen activation and hydrogen transfer . | AICHE JOURNAL , 2023 , 69 (11) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Promoters are indispensable components of Ru-based catalysts to promote N-2 activation in ammonia (NH3) synthesis. The rational addition and regulation of promoters play a critical role in affecting the NH3 synthesis rate. In this work, we report a simple method by altering the loading sequence of Ba and Ru species to modulate the Ru-promoter interface, thus significantly boosting the NH3 synthesis rate. The Ba-Ru/GC BM catalyst via the prior loading of Ba rather than Ru over graphitic carbon (GC) exhibits a high NH3 synthesis rate of 18.7 mmol gcat (-1) h(-1) at 400(degrees)C and 1 MPa, which is 2.5 times that of the Ru-Ba/GC BM catalyst via the conventional prior loading of Ru rather than Ba on GC. Our studies reveal that the prior loading of Ba benefits the high dispersion of the basic Ba promoter over an electron-withdrawing GC support, and then Ba species serve as structural promoters to stabilize Ru with small particle sizes, which exposes more active sites for N-2 activation. Additionally, the intimate Ba and Ru interface enables facile electron donation from Ba to Ru sites, thus accelerating N-2 dissociation to realize efficient NH3 synthesis. This work provides a simple approach to modulating the Ru-promoter interface and maximizing promoter utilization to enhance NH3 synthesis performance.
Keyword ：
ammonia synthesis ammonia synthesis loadingsequence loadingsequence particle size particle size promoter utilization promoter utilization Ru-promoter interface Ru-promoter interface
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Su, Kailin , Huang, Dongya , Fang, Hongpeng et al. Boosting N2 Conversion into NH3 over Ru Catalysts via Modulating the Ru-Promoter Interface [J]. | ACS APPLIED MATERIALS & INTERFACES , 2023 , 15 (49) : 56992-57002 . |
| MLA | Su, Kailin et al. "Boosting N2 Conversion into NH3 over Ru Catalysts via Modulating the Ru-Promoter Interface" . | ACS APPLIED MATERIALS & INTERFACES 15 . 49 (2023) : 56992-57002 . |
| APA | Su, Kailin , Huang, Dongya , Fang, Hongpeng , Zhou, Yanliang , Qi, Haifeng , Ni, Jun et al. Boosting N2 Conversion into NH3 over Ru Catalysts via Modulating the Ru-Promoter Interface . | ACS APPLIED MATERIALS & INTERFACES , 2023 , 15 (49) , 56992-57002 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The development of a Ru catalyst with excellent ammonia synthesis performance plays a key role in the application of ammonia in the upcoming renewable energy era. Herein, a ceria-supported Ru catalyst was prepared by oxygen-induced activation, resulting in enhancement of the amount of the exposed Ru species, active oxygen species, and Ru-O-Ce bond. As a result, the amount of Ru species surrounded by active oxygen species would be enhanced, facilitating the exchange and reaction of the hydrogen species adsorbed on the Ru catalyst with the gaseous reactants. Oxygen-induced activation of the ceria-supported Ru catalyst leads to enhancement of the ammonia synthesis activity by more than 63%; moreover, the as-obtained catalyst has a smaller negative reaction order of H2 than its Ru/CeO2 counterpart.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhou, Jian , Xia, Fei , Zhang, Chuanfeng et al. Oxygen-Induced Activation of a Ceria-Supported Ru Catalyst for Enhancing Ammonia Synthesis Activity [J]. | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2023 , 62 (15) : 6142-6148 . |
| MLA | Zhou, Jian et al. "Oxygen-Induced Activation of a Ceria-Supported Ru Catalyst for Enhancing Ammonia Synthesis Activity" . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 62 . 15 (2023) : 6142-6148 . |
| APA | Zhou, Jian , Xia, Fei , Zhang, Chuanfeng , Ni, Jun , Lin, Jianxin , Lin, Bingyu et al. Oxygen-Induced Activation of a Ceria-Supported Ru Catalyst for Enhancing Ammonia Synthesis Activity . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2023 , 62 (15) , 6142-6148 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
