{"title":"重掺杂Ni/TiO 2催化剂活性位点分散性增强及对草酸二甲酯高效加氢制乙醇酸甲酯吸附行为的优化","authors":"Hao Wang, Ni Zhang, Jiang Gong, Fengling Zheng, Jianwei Li, Zhoulin Hu, Chuancai Zhang","doi":"10.1007/s10562-025-05203-5","DOIUrl":null,"url":null,"abstract":"<div><p>The Ni-Re/TiO<sub>2</sub> catalyst was synthesized <i>via</i> the impregnation method, exhibiting exceptional catalytic performance in the hydrogenation of dimethyl oxalate (DMO) to methyl glycolate (MG). With low Ni and Re loadings (2.5Ni0.5Re/TiO<sub>2</sub>), the catalyst achieved 94% DMO conversion and 96% MG selectivity, maintaining impressive stability for over 200 h, highlighting its potential for industrial applications. Characterization studies demonstrated that Re doping promotes strong electronic interactions between Ni and Re, stabilizing and enhancing the dispersion of Ni nanoparticles, which facilitates H<sub>2</sub> activation. Concurrently, the presence of ReOx species introduces abundant Lewis acid sites, which enhance the adsorption and activation of C = O groups, thus facilitating DMO adsorption and dissociation. The superior catalytic performance arises from the synergistic interactions between ReOx and Ni species, providing valuable insights into the development of low-loading, high-activity catalysts for DMO hydrogenation.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 11","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Re-Doped Ni/TiO₂ Catalyst with Enhanced Active Site Dispersion and Optimized Adsorption Behavior for High-Efficiency Hydrogenation of Dimethyl Oxalate To Methyl Glycolate\",\"authors\":\"Hao Wang, Ni Zhang, Jiang Gong, Fengling Zheng, Jianwei Li, Zhoulin Hu, Chuancai Zhang\",\"doi\":\"10.1007/s10562-025-05203-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The Ni-Re/TiO<sub>2</sub> catalyst was synthesized <i>via</i> the impregnation method, exhibiting exceptional catalytic performance in the hydrogenation of dimethyl oxalate (DMO) to methyl glycolate (MG). With low Ni and Re loadings (2.5Ni0.5Re/TiO<sub>2</sub>), the catalyst achieved 94% DMO conversion and 96% MG selectivity, maintaining impressive stability for over 200 h, highlighting its potential for industrial applications. Characterization studies demonstrated that Re doping promotes strong electronic interactions between Ni and Re, stabilizing and enhancing the dispersion of Ni nanoparticles, which facilitates H<sub>2</sub> activation. Concurrently, the presence of ReOx species introduces abundant Lewis acid sites, which enhance the adsorption and activation of C = O groups, thus facilitating DMO adsorption and dissociation. The superior catalytic performance arises from the synergistic interactions between ReOx and Ni species, providing valuable insights into the development of low-loading, high-activity catalysts for DMO hydrogenation.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":508,\"journal\":{\"name\":\"Catalysis Letters\",\"volume\":\"155 11\",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-10-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10562-025-05203-5\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-025-05203-5","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Re-Doped Ni/TiO₂ Catalyst with Enhanced Active Site Dispersion and Optimized Adsorption Behavior for High-Efficiency Hydrogenation of Dimethyl Oxalate To Methyl Glycolate
The Ni-Re/TiO2 catalyst was synthesized via the impregnation method, exhibiting exceptional catalytic performance in the hydrogenation of dimethyl oxalate (DMO) to methyl glycolate (MG). With low Ni and Re loadings (2.5Ni0.5Re/TiO2), the catalyst achieved 94% DMO conversion and 96% MG selectivity, maintaining impressive stability for over 200 h, highlighting its potential for industrial applications. Characterization studies demonstrated that Re doping promotes strong electronic interactions between Ni and Re, stabilizing and enhancing the dispersion of Ni nanoparticles, which facilitates H2 activation. Concurrently, the presence of ReOx species introduces abundant Lewis acid sites, which enhance the adsorption and activation of C = O groups, thus facilitating DMO adsorption and dissociation. The superior catalytic performance arises from the synergistic interactions between ReOx and Ni species, providing valuable insights into the development of low-loading, high-activity catalysts for DMO hydrogenation.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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