Lijie Fu , Yong Men , Shuya Wu , Shuyi Xu , Guohong Wang , Chongchong Kong , Jinguo Wang , Feng Shi , Zhenrong Yan , Xuelong Miao
{"title":"极好的三维多孔结构金属泡沫支撑Ni/Ce/Al-CF系综作为甲醇分解制氢的活性结构催化剂","authors":"Lijie Fu , Yong Men , Shuya Wu , Shuyi Xu , Guohong Wang , Chongchong Kong , Jinguo Wang , Feng Shi , Zhenrong Yan , Xuelong Miao","doi":"10.1016/j.apcata.2025.120450","DOIUrl":null,"url":null,"abstract":"<div><div>A series of metal foam-supported Ni-based catalysts-monometallic Ni-CF, bimetallic Ni/Ce-CF, Ni/Al-CF and trimetallic Ni/Ce/Al-CF-were prepared by modified wet chemical etching (MWCE) and employed for hydrogen production via methanol decomposition (MD) in the temperature range of 200–325 ℃. Among those catalysts, the 2Ni/3Ce/3Al-Cu foam (CF) catalyst shows the superior catalytic performance for hydrogen production, achieving a remarkable activity of almost complete methanol conversion (99.3 %) and high H<sub>2</sub> selectivity of 91.8 % at 300 ℃. Moreover, the performance of 2Ni/3Ce/3Al-CF catalyst remained stable during the stability test for up to 40 h at 275 ℃. SEM and BET characterization show that etched copper foam can remarkably enlarge the specific surface area of the structured catalyst, provide more active sites, and enhance its catalytic activity. The strong interaction among Ni, Ce and Al induce the synergistic effect by creating abundant oxygen vacancies in the trimetallic system as evidenced by XPS. H<sub>2</sub>-TPR and XPS further revealed a crucial balance between reducibility and metal-support interactions: Al-containing catalysts like 2Ni/3Ce/3Al-CF exhibit higher reduction thresholds and confirming the role of Al in stabilizing oxidized Ni species via strong metal-support interactions. And CH<sub>3</sub>OH-TPD analysis indicated the catalyst had much higher low-temperature hydrogen production than other catalysts because of the synergistic effect of three metals, consistent with the catalyst activity test results. The developed strategy may provide insights into the development of the design principles for high-performance structured catalysts for hydrogen production via methanol decomposition.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"705 ","pages":"Article 120450"},"PeriodicalIF":4.7000,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Superb three-dimensional porous-structured metal foam-supported Ni/Ce/Al-CF ensemble as an active structured catalyst for hydrogen production via methanol decomposition\",\"authors\":\"Lijie Fu , Yong Men , Shuya Wu , Shuyi Xu , Guohong Wang , Chongchong Kong , Jinguo Wang , Feng Shi , Zhenrong Yan , Xuelong Miao\",\"doi\":\"10.1016/j.apcata.2025.120450\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A series of metal foam-supported Ni-based catalysts-monometallic Ni-CF, bimetallic Ni/Ce-CF, Ni/Al-CF and trimetallic Ni/Ce/Al-CF-were prepared by modified wet chemical etching (MWCE) and employed for hydrogen production via methanol decomposition (MD) in the temperature range of 200–325 ℃. Among those catalysts, the 2Ni/3Ce/3Al-Cu foam (CF) catalyst shows the superior catalytic performance for hydrogen production, achieving a remarkable activity of almost complete methanol conversion (99.3 %) and high H<sub>2</sub> selectivity of 91.8 % at 300 ℃. Moreover, the performance of 2Ni/3Ce/3Al-CF catalyst remained stable during the stability test for up to 40 h at 275 ℃. SEM and BET characterization show that etched copper foam can remarkably enlarge the specific surface area of the structured catalyst, provide more active sites, and enhance its catalytic activity. The strong interaction among Ni, Ce and Al induce the synergistic effect by creating abundant oxygen vacancies in the trimetallic system as evidenced by XPS. H<sub>2</sub>-TPR and XPS further revealed a crucial balance between reducibility and metal-support interactions: Al-containing catalysts like 2Ni/3Ce/3Al-CF exhibit higher reduction thresholds and confirming the role of Al in stabilizing oxidized Ni species via strong metal-support interactions. And CH<sub>3</sub>OH-TPD analysis indicated the catalyst had much higher low-temperature hydrogen production than other catalysts because of the synergistic effect of three metals, consistent with the catalyst activity test results. The developed strategy may provide insights into the development of the design principles for high-performance structured catalysts for hydrogen production via methanol decomposition.</div></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":\"705 \",\"pages\":\"Article 120450\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2025-07-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis A: General\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926860X25003515\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X25003515","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Superb three-dimensional porous-structured metal foam-supported Ni/Ce/Al-CF ensemble as an active structured catalyst for hydrogen production via methanol decomposition
A series of metal foam-supported Ni-based catalysts-monometallic Ni-CF, bimetallic Ni/Ce-CF, Ni/Al-CF and trimetallic Ni/Ce/Al-CF-were prepared by modified wet chemical etching (MWCE) and employed for hydrogen production via methanol decomposition (MD) in the temperature range of 200–325 ℃. Among those catalysts, the 2Ni/3Ce/3Al-Cu foam (CF) catalyst shows the superior catalytic performance for hydrogen production, achieving a remarkable activity of almost complete methanol conversion (99.3 %) and high H2 selectivity of 91.8 % at 300 ℃. Moreover, the performance of 2Ni/3Ce/3Al-CF catalyst remained stable during the stability test for up to 40 h at 275 ℃. SEM and BET characterization show that etched copper foam can remarkably enlarge the specific surface area of the structured catalyst, provide more active sites, and enhance its catalytic activity. The strong interaction among Ni, Ce and Al induce the synergistic effect by creating abundant oxygen vacancies in the trimetallic system as evidenced by XPS. H2-TPR and XPS further revealed a crucial balance between reducibility and metal-support interactions: Al-containing catalysts like 2Ni/3Ce/3Al-CF exhibit higher reduction thresholds and confirming the role of Al in stabilizing oxidized Ni species via strong metal-support interactions. And CH3OH-TPD analysis indicated the catalyst had much higher low-temperature hydrogen production than other catalysts because of the synergistic effect of three metals, consistent with the catalyst activity test results. The developed strategy may provide insights into the development of the design principles for high-performance structured catalysts for hydrogen production via methanol decomposition.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.