{"title":"Effect of SiO2 Morphology on CH4 Pyrolysis Activity of Ni Catalyst in the Emission Free H2 Production","authors":"Kalpana Manda, Sasikumar Boggala, Anjaneyulu Chatla, Venugopal Akula","doi":"10.1007/s11244-025-02151-7","DOIUrl":null,"url":null,"abstract":"<div><p>Ni supported on SiO<sub>2</sub> with various morphologies such as nanocubes, nanorods, nanospheres and dendritic mesoporous silica (DMS) are prepared and employed for zero emission hydrogen production (Turquoise hydrogen). The fresh calcined catalysts possessed NiO (200) planes predominantly while in the reduced samples Ni<sup>0</sup> (111) planes are majorly exposed irrespective of SiO<sub>2</sub> morphology. Among these the Ni-DMS demonstrated a higher rate of H<sub>2</sub> production while, the Ni/nanorods showed inferior activity. Formation of Ni silicate was found only in case of Ni/nanorods. Ionic Ni reduced below 600 °C seems to exhibit better CH<sub>4</sub> cracking rate, as was depicted from H<sub>2</sub>-TPR results. Variation in graphitic carbon was found due to difference in SiO<sub>2</sub> morphology as well as the reducibility of nickel interacted with SiO<sub>2</sub>.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"68 18-19","pages":"2189 - 2199"},"PeriodicalIF":3.0000,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Topics in Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11244-025-02151-7","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Ni supported on SiO2 with various morphologies such as nanocubes, nanorods, nanospheres and dendritic mesoporous silica (DMS) are prepared and employed for zero emission hydrogen production (Turquoise hydrogen). The fresh calcined catalysts possessed NiO (200) planes predominantly while in the reduced samples Ni0 (111) planes are majorly exposed irrespective of SiO2 morphology. Among these the Ni-DMS demonstrated a higher rate of H2 production while, the Ni/nanorods showed inferior activity. Formation of Ni silicate was found only in case of Ni/nanorods. Ionic Ni reduced below 600 °C seems to exhibit better CH4 cracking rate, as was depicted from H2-TPR results. Variation in graphitic carbon was found due to difference in SiO2 morphology as well as the reducibility of nickel interacted with SiO2.
期刊介绍：
Topics in Catalysis publishes topical collections in all fields of catalysis which are composed only of invited articles from leading authors. The journal documents today’s emerging and critical trends in all branches of catalysis. Each themed issue is organized by renowned Guest Editors in collaboration with the Editors-in-Chief. Proposals for new topics are welcome and should be submitted directly to the Editors-in-Chief.
The publication of individual uninvited original research articles can be sent to our sister journal Catalysis Letters. This journal aims for rapid publication of high-impact original research articles in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
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