La0.97Yb0.03CoO3 perovskite with excellent CO2 and H2O resistance for total oxidation of propane

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-03-27 DOI:10.1016/j.jssc.2025.125346

Xiaoshan Feng , Ling Chen , Siying su , Guoxin Zhuang , Quanming Xu , Bifei Huang , Fenglan Li , Daifeng Lin

{"title":"La0.97Yb0.03CoO3 perovskite with excellent CO2 and H2O resistance for total oxidation of propane","authors":"Xiaoshan Feng , Ling Chen , Siying su , Guoxin Zhuang , Quanming Xu , Bifei Huang , Fenglan Li , Daifeng Lin","doi":"10.1016/j.jssc.2025.125346","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, La1−xYbxCoO3 (x=0, 0.01, 0.03, 0.05) perovskite oxides were synthesized by a sol–gel route. The obtained materials were characterized by XRD, BET, H2-TPR, O2-TPD, SEM, TGA, XPS, and evaluated in the catalytic oxidation of propane. It is demonstrated that the suitable introduction of Yb in A site of LaCoO3 perovskite can create structural defects promoting reducibility of Co ions, increasing Co2+/Co3+ ratios and Oads/Olatt ratio. When Yb is excessive, a cubic perovskite phase with decreased defects is found. As a result, La0.97Yb0.03CoO3 catalyst shows the highest of reaction rate 1.15 μmolC3H8/(g·s) at 350°C, when it is 0.76 μmolC3H8/(g·s) for pristine LaCoO3. Moreover, it exhibits excellent stability in a duration test of 80 h at 400 °C and strong resistance against 5 vol% H2O and/or 5 vol% CO2 during a lasting 40 h.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"348 ","pages":"Article 125346"},"PeriodicalIF":3.2000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022459625001690","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}

引用次数: 0

Abstract

In this study, La_1−xYb_xCoO₃ (x=0, 0.01, 0.03, 0.05) perovskite oxides were synthesized by a sol–gel route. The obtained materials were characterized by XRD, BET, H₂-TPR, O₂-TPD, SEM, TGA, XPS, and evaluated in the catalytic oxidation of propane. It is demonstrated that the suitable introduction of Yb in A site of LaCoO₃ perovskite can create structural defects promoting reducibility of Co ions, increasing Co²⁺/Co³⁺ ratios and O_ads/O_latt ratio. When Yb is excessive, a cubic perovskite phase with decreased defects is found. As a result, La_0.97Yb_0.03CoO₃ catalyst shows the highest of reaction rate 1.15 μmol_C3H8/(g·s) at 350°C, when it is 0.76 μmol_C3H8/(g·s) for pristine LaCoO₃. Moreover, it exhibits excellent stability in a duration test of 80 h at 400 °C and strong resistance against 5 vol% H₂O and/or 5 vol% CO₂ during a lasting 40 h.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.