{"title":"Effect of Acid-Base Property on the Upgrade of Ethanol and Acetaldehyde to Butadiene over Sc<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> Catalysts.","authors":"Qiangqiang Zhu, Lilin Yin, Xianyao Han, Bin Wang","doi":"10.1021/acsomega.4c10129","DOIUrl":null,"url":null,"abstract":"<p><p>A novel Sc<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> catalyst was explored and evaluated for the upgrade of ethanol and acetaldehyde to butadiene. Notably, the Sc<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> catalyst with a Sc/Si molar ratio of 0.06 demonstrated exceptional performance, exhibiting the highest selectivity of 81.7% for butadiene alongside a selectivity of 10.2% for butanol. When the Sc/Si ratio was increased to 0.3, the butanol selectivity increased to 30.0%. To elucidate the underlying factors governing these results, detailed characterizations of the catalysts structure and acidic-basic properties were conducted for the Sc<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> materials. The analyses revealed that the higher percentage of strong acidic sites in total acidic sites was conducive to higher butadiene yield, while the increased density of strong basic sites correlated with higher butanol selectivity.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 7","pages":"7069-7076"},"PeriodicalIF":3.7000,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11866019/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Omega","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acsomega.4c10129","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/25 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A novel Sc2O3-SiO2 catalyst was explored and evaluated for the upgrade of ethanol and acetaldehyde to butadiene. Notably, the Sc2O3-SiO2 catalyst with a Sc/Si molar ratio of 0.06 demonstrated exceptional performance, exhibiting the highest selectivity of 81.7% for butadiene alongside a selectivity of 10.2% for butanol. When the Sc/Si ratio was increased to 0.3, the butanol selectivity increased to 30.0%. To elucidate the underlying factors governing these results, detailed characterizations of the catalysts structure and acidic-basic properties were conducted for the Sc2O3-SiO2 materials. The analyses revealed that the higher percentage of strong acidic sites in total acidic sites was conducive to higher butadiene yield, while the increased density of strong basic sites correlated with higher butanol selectivity.
ACS OmegaChemical Engineering-General Chemical Engineering
CiteScore
6.60
自引率
4.90%
发文量
3945
审稿时长
2.4 months
期刊介绍：
ACS Omega is an open-access global publication for scientific articles that describe new findings in chemistry and interfacing areas of science, without any perceived evaluation of immediate impact.
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