Transactions of Tianjin University最新文献_第2页

Pd0–Ov–Ce3+ Interfacial Sites with Charge Redistribution for Enhanced Hydrogenation of Methyl Oleate to Methyl Stearate 油酸甲酯加氢生成硬脂酸甲酯的电荷重分布的Pd0-Ov-Ce3 +界面位点

4区工程技术

Transactions of Tianjin University Pub Date : 2024-08-01 DOI: 10.1007/s12209-024-00404-2

Zhaohui Meng, Ying Liao, Ling Liu, Yaqian Li, Hao Yan, Xiang Feng, Xiaobo Chen, Yibin Liu, Chaohe Yang

{"title":"Pd0–Ov–Ce3+ Interfacial Sites with Charge Redistribution for Enhanced Hydrogenation of Methyl Oleate to Methyl Stearate","authors":"Zhaohui Meng, Ying Liao, Ling Liu, Yaqian Li, Hao Yan, Xiang Feng, Xiaobo Chen, Yibin Liu, Chaohe Yang","doi":"10.1007/s12209-024-00404-2","DOIUrl":"https://doi.org/10.1007/s12209-024-00404-2","url":null,"abstract":"Abstract Improving the efficiency of metal/reducible metal oxide interfacial sites for hydrogenation reactions of unsaturated groups (e.g., C=C and C=O) is a promising yet challenging endeavor. In our study, we developed a Pd/CeO 2 catalyst by enhancing the oxygen vacancy (O V ) concentration in CeO 2 through high-temperature treatment. This process led to the formation of an interface structure ideal for supporting the hydrogenation of methyl oleate to methyl stearate. Specifically, metal Pd 0 atoms bonded to the O V in defective CeO 2 formed Pd 0 –O V –Ce 3+ interfacial sites, enabling strong electron transfer from CeO 2 to Pd. The interfacial sites exhibit a synergistic adsorption effect on the reaction substrate. Pd 0 sites promote the adsorption and activation of C=C bonds, while O V preferably adsorbs C=O bonds, mitigating competition with C=C bonds for Pd 0 adsorption sites. This synergy ensures rapid C=C bond activation and accelerates the attack of active H* species on the semi-hydrogenated intermediate. As a result, our Pd/CeO 2 -500 catalyst, enriched with Pd 0 –O V –Ce 3+ interfacial sites, demonstrated excellent hydrogenation activity at just 30 °C. The catalyst achieved a Cis–C18:1 conversion rate of 99.8% and a methyl stearate formation rate of 5.7 mol/(h·g metal ). This work revealed the interfacial sites for enhanced hydrogenation reactions and provided ideas for designing highly active hydrogenation catalysts.","PeriodicalId":23296,"journal":{"name":"Transactions of Tianjin University","volume":"30 4","pages":"359-368"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12209-024-00404-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147899180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Corrosion-Resistant Polymer-Derived SiOC Membrane for Effective Organic Removal via Synergistic Adsorption and Peroxymonosulfate Activation 通过协同吸附和过氧单硫酸盐活化有效去除有机物的耐腐蚀聚合物衍生SiOC膜

4区工程技术

Transactions of Tianjin University Pub Date : 2024-06-01 DOI: 10.1007/s12209-024-00397-y

Jiankun Ji, Yarong Gu, Jianning Zhang, Chongwen Yu, Xiao Hu, Yueping Bao, Yujie Song

引用次数: 3

Sputtered Stainless Steel on Silicon Photoanode for Stable Seawater Splitting in Photoelectrochemical Flow Cell 用于光电化学流动池中稳定海水分离的硅溅射不锈钢光阳极

IF 7.1 4区工程技术

Transactions of Tianjin University Pub Date : 2023-12-22 DOI: 10.1007/s12209-023-00374-x

Shixuan Zhao, Bin Liu, Gong Zhang, Qingzhen Wang, Yuan Cai, Yuting Tong, Shujie Wang, Peng Zhang, Tuo Wang, Jinlong Gong

引用次数: 0

Recent Advances in Pure-Organic Host–Guest Room-Temperature Phosphorescence Systems Toward Bioimaging 面向生物成像的纯有机主客室温磷光系统的最新进展

IF 7.1 4区工程技术

Transactions of Tianjin University Pub Date : 2023-12-22 DOI: 10.1007/s12209-023-00375-w

Zhiqin Wu, Yang Li, Xiang Ma

引用次数: 0

Sequential Growth of Cs3Bi2I9/BiVO4 Direct Z-Scheme Heterojunction for Visible-Light-Driven Photocatalytic CO2 Reduction 用于可见光驱动的光催化二氧化碳还原的 Cs3Bi2I9/BiVO4 直接 Z 型梯形异质结的序贯生长

IF 7.1 4区工程技术

Transactions of Tianjin University Pub Date : 2023-12-17 DOI: 10.1007/s12209-023-00376-9

Long Jiang, Hanrui Du, Le Li, X. Guan, Yihao Zhang, Liwei Li, Xiaoxu Liu, Lei Li, Yingcheng Tian, Li Zhang, Shuai Wang, Jie Chen, Shaohua Shen

引用次数: 0

The Preparation of Nanosized Pd/ZSM-23 Bifunctional Catalysts for n-Hexadecane Hydroisomerization by Employing PHMB as the Growth Modifier 利用 PHMB 作为生长改性剂制备正十六烷加氢异构化用纳米级 Pd/ZSM-23 双功能催化剂

IF 7.1 4区工程技术

Transactions of Tianjin University Pub Date : 2023-12-17 DOI: 10.1007/s12209-023-00377-8

Jiazheng Sun, Shuxiang Xiong, Qiong Wu, Wei Wang, Wei Wu

引用次数: 0

Elucidating the Role of Mass Transfer in Electrochemical Redox Reactions on Electrospun Fibers 阐明电纺纤维上电化学氧化还原反应中的传质作用

IF 7.1 4区工程技术

Transactions of Tianjin University Pub Date : 2023-12-07 DOI: 10.1007/s12209-023-00369-8

Yan Li, Ziwang Kan, Lina Jia, Dan Zhang, Yan Hong, Jingjing Liu, Haibo Huang, Siqi Li, Song Liu

引用次数: 0

High-Efficiency Catalytic Interface IrOx/CeO2 with Adsorbate Evolution Mechanism Boosts Oxygen Evolution Reaction in Acid Media 具有吸附剂进化机制的 IrOx/CeO2 高效催化界面可促进酸性介质中的氧气进化反应

IF 7.1 4区工程技术

Transactions of Tianjin University Pub Date : 2023-11-28 DOI: 10.1007/s12209-023-00368-9

Hongyu Zhao, Jie Yin, Pinxian Xi

引用次数: 0

Cobalt-Free BaFe0.6Zr0.1Y0.3O3−δ Oxygen Electrode for Reversible Protonic Ceramic Electrochemical Cells 可逆质子陶瓷电化学电池用无钴BaFe0.6Zr0.1Y0.3O3−δ氧电极

4区工程技术

Transactions of Tianjin University Pub Date : 2023-11-27 DOI: 10.1007/s12209-023-00370-1

Chenghao Yang, Jin Li, Ao Hu, Jian Pu, Bo Chi

{"title":"Cobalt-Free BaFe0.6Zr0.1Y0.3O3−δ Oxygen Electrode for Reversible Protonic Ceramic Electrochemical Cells","authors":"Chenghao Yang, Jin Li, Ao Hu, Jian Pu, Bo Chi","doi":"10.1007/s12209-023-00370-1","DOIUrl":"https://doi.org/10.1007/s12209-023-00370-1","url":null,"abstract":"Abstract Reversible protonic ceramic electrochemical cells (R-PCECs) are ideal, high-efficiency devices that are environmentally friendly and have a modular design. This paper studies BaFe 0.6 Zr 0.1 Y 0.3 O 3− δ (BFZY3) as a cobalt-free perovskite oxygen electrode for high-performance R-PCECs where Y ions doping can increase the concentration of oxygen vacancies with a remarkable increase in catalytic performance. The cell with configuration of Ni-BZCYYb/BZCYYb/BFZY3 demonstrated promising performance in dual modes of fuel cells (FCs) and electrolysis cells (ECs) at 650 °C with low polarization resistance of 0.13 Ω cm 2 , peak power density of 546.59 mW/cm 2 in FC mode, and current density of − 1.03 A/cm 2 at 1.3 V in EC mode. The alternative operation between FC and EC modes for up to eight cycles with a total of 80 h suggests that the cell with BFZY3 is exceptionally stable and reversible over the long term. The results indicated that BFZY3 has considerable potential as an air electrode material for R-PCECs, permitting efficient oxygen reduction and water splitting.","PeriodicalId":23296,"journal":{"name":"Transactions of Tianjin University","volume":"29 6","pages":"444-452"},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12209-023-00370-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147907109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Iron Atom-Cluster Strategy Synthesis of Hierarchically Porous Fe–N–C Catalysts for Proton Exchange Membrane Fuel Cells 铁原子团策略合成质子交换膜燃料电池用分层多孔 Fe-N-C 催化剂

IF 7.1 4区工程技术

Transactions of Tianjin University Pub Date : 2023-11-20 DOI: 10.1007/s12209-023-00372-z

Wenhao Qiu, Qing Han, Xiaogang Yu, Zhonghua Xiang

引用次数: 0