{"title":"掺钙Ni/La2Zr2O7对CO2重整甲烷的催化性能研究","authors":"Xiaoping Zhang, Yongqi Han, Changna Jing, Zhengpeng Wang, Chang Yao, Mengwen Yang","doi":"10.1007/s11144-025-02842-y","DOIUrl":null,"url":null,"abstract":"<div><p>A series of Ca-doped Ni/La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> catalysts were prepared by co-precipitation method. The obtained composite metal oxides with high stability of the pyrochlore structure were investigated as the catalysts for the carbon dioxide reforming of methane. The structure, morphology, reduction performance and carbon deposition of the catalyst were studied by XRD, BET, TEM, H<sub>2</sub>-TPR and TG-DSC. The results showed that all catalysts typically exhibited a pyrochlore structure. The crystallinity of the samples with calcium doping was somewhat reduced compared to that without. The increase of specific surface area, pore volume and the existence of its mesoporous structure promoted the dispersion of the active component Ni, which showed good catalytic performance in the methane reforming reaction. Among them, NLZCa6, a catalyst with Ca doping content of 6%, showed excellent methane reforming catalytic performance. Its CH<sub>4</sub> conversion and CO<sub>2</sub> conversion rates reached 85% and 92% at 750 °C. During the 35-h activity evaluation period, the catalyst showed high stability.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":"138 4","pages":"2137 - 2149"},"PeriodicalIF":1.7000,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study on the catalytic performance of Ca-doped Ni/La2Zr2O7 for CO2 reforming methane\",\"authors\":\"Xiaoping Zhang, Yongqi Han, Changna Jing, Zhengpeng Wang, Chang Yao, Mengwen Yang\",\"doi\":\"10.1007/s11144-025-02842-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A series of Ca-doped Ni/La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> catalysts were prepared by co-precipitation method. The obtained composite metal oxides with high stability of the pyrochlore structure were investigated as the catalysts for the carbon dioxide reforming of methane. The structure, morphology, reduction performance and carbon deposition of the catalyst were studied by XRD, BET, TEM, H<sub>2</sub>-TPR and TG-DSC. The results showed that all catalysts typically exhibited a pyrochlore structure. The crystallinity of the samples with calcium doping was somewhat reduced compared to that without. The increase of specific surface area, pore volume and the existence of its mesoporous structure promoted the dispersion of the active component Ni, which showed good catalytic performance in the methane reforming reaction. Among them, NLZCa6, a catalyst with Ca doping content of 6%, showed excellent methane reforming catalytic performance. Its CH<sub>4</sub> conversion and CO<sub>2</sub> conversion rates reached 85% and 92% at 750 °C. During the 35-h activity evaluation period, the catalyst showed high stability.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":750,\"journal\":{\"name\":\"Reaction Kinetics, Mechanisms and Catalysis\",\"volume\":\"138 4\",\"pages\":\"2137 - 2149\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2025-04-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Reaction Kinetics, Mechanisms and Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11144-025-02842-y\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reaction Kinetics, Mechanisms and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11144-025-02842-y","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Study on the catalytic performance of Ca-doped Ni/La2Zr2O7 for CO2 reforming methane
A series of Ca-doped Ni/La2Zr2O7 catalysts were prepared by co-precipitation method. The obtained composite metal oxides with high stability of the pyrochlore structure were investigated as the catalysts for the carbon dioxide reforming of methane. The structure, morphology, reduction performance and carbon deposition of the catalyst were studied by XRD, BET, TEM, H2-TPR and TG-DSC. The results showed that all catalysts typically exhibited a pyrochlore structure. The crystallinity of the samples with calcium doping was somewhat reduced compared to that without. The increase of specific surface area, pore volume and the existence of its mesoporous structure promoted the dispersion of the active component Ni, which showed good catalytic performance in the methane reforming reaction. Among them, NLZCa6, a catalyst with Ca doping content of 6%, showed excellent methane reforming catalytic performance. Its CH4 conversion and CO2 conversion rates reached 85% and 92% at 750 °C. During the 35-h activity evaluation period, the catalyst showed high stability.
期刊介绍：
Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields:
-kinetics of homogeneous reactions in gas, liquid and solid phase;
-Homogeneous catalysis;
-Heterogeneous catalysis;
-Adsorption in heterogeneous catalysis;
-Transport processes related to reaction kinetics and catalysis;
-Preparation and study of catalysts;
-Reactors and apparatus.
Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
