Exploring La-Based High Entropy Perovskites for Syngas Production Via Methane Reforming

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-09-26 DOI:10.1007/s10562-025-05189-0

Aathira Bhaskaran, Satyapaul A. Singh, Sounak Roy

{"title":"Exploring La-Based High Entropy Perovskites for Syngas Production Via Methane Reforming","authors":"Aathira Bhaskaran, Satyapaul A. Singh, Sounak Roy","doi":"10.1007/s10562-025-05189-0","DOIUrl":null,"url":null,"abstract":"<div><p>Perovskite-type oxides (ABO<sub>3</sub>), featuring lanthanum at the A-site and transition metals at the B-site, have attracted considerable attention due to their structural flexibility and redox-active <i>d</i>-orbitals. Recently, High Entropy Perovskite Oxide catalysts have emerged as promising materials, owing to several key attributes: phase stabilization driven by high configurational entropy, enhanced resistance to sintering due to sluggish diffusion, lattice distortion that promotes reactivity, and the “cocktail effect,” which enables synergistic electronic and structural tuning. The selection of transition metals at the B-site plays a critical role in determining catalytic performance. In this study, we investigated two high entropy compositions—LaMg<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>3</sub> and LaMg<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>Cu<sub>0.2</sub>O<sub>3</sub>—by comparing their catalytic activity, stability, and syngas selectivity, with particular emphasis on the role of exsolved nanoparticles in enhancing methane reforming performance.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>Schematic illustration of dry reforming of methane over high entropy perovskite oxide catalysts.</p></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 10","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-09-26","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/s10562-025-05189-0","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Perovskite-type oxides (ABO₃), featuring lanthanum at the A-site and transition metals at the B-site, have attracted considerable attention due to their structural flexibility and redox-active d-orbitals. Recently, High Entropy Perovskite Oxide catalysts have emerged as promising materials, owing to several key attributes: phase stabilization driven by high configurational entropy, enhanced resistance to sintering due to sluggish diffusion, lattice distortion that promotes reactivity, and the “cocktail effect,” which enables synergistic electronic and structural tuning. The selection of transition metals at the B-site plays a critical role in determining catalytic performance. In this study, we investigated two high entropy compositions—LaMg_0.2Fe_0.2Co_0.2Ni_0.2Mn_0.2O₃ and LaMg_0.2Fe_0.2Co_0.2Ni_0.2Cu_0.2O₃—by comparing their catalytic activity, stability, and syngas selectivity, with particular emphasis on the role of exsolved nanoparticles in enhancing methane reforming performance.

Graphical abstract

Schematic illustration of dry reforming of methane over high entropy perovskite oxide catalysts.

查看原文本刊更多论文

探索la基高熵钙钛矿用于甲烷重整合成气的研究

钙钛矿型氧化物（ABO3）以a位镧和b位过渡金属为特征，由于其结构柔韧性和氧化还原活性的d轨道而引起了人们的广泛关注。最近，高熵钙钛矿氧化物催化剂已经成为一种很有前途的材料，因为它具有几个关键属性：由高构型熵驱动的相稳定，由于缓慢扩散而增强的烧结阻力，促进反应性的晶格畸变，以及“鸡尾酒效应”，可以实现协同电子和结构调谐。b位过渡金属的选择在决定催化性能方面起着关键作用。在这项研究中，我们研究了两种高熵组分lamg0.2 fe0.2 co0.2 ni0.2 mn0.2o3和lamg0.2 fe0.2 co0.2 ni0.2 cu0.2 2o3，通过比较它们的催化活性、稳定性和合成气选择性，特别强调了溶解纳米颗粒在提高甲烷重整性能方面的作用。图解：甲烷在高熵钙钛矿氧化物催化剂上干重整的示意图。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

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.