{"title":"One-pot gas-phase upgrading of low-carbon alcohols and acetone to C2-C8 olefins on Zn-Zr oxides","authors":"Cristhian A. Fonseca Benítez, Pablo J. Luggren","doi":"10.1016/j.ces.2025.121705","DOIUrl":null,"url":null,"abstract":"<div><div>ABE (acetone-butanol-ethanol) and IBE (isopropanol-butanol-ethanol) fermentation are well-established processes for producing ketones and alcohols from biomass. Using these low-carbon alcohols and acetone might improve the production of olefins.</div><div>The gas-phase synthesis of light olefins from 1-butanol, ABE and IBE was investigated on Zn-Zr mixed oxides and reference ZnO and ZrO<sub>2</sub>. Zn-Zr catalysts with different Zn/Zr molar ratios (0.11–0.43) were prepared by incipient wetness impregnation of Zn on Zr(OH)<sub>4</sub>. The 1-butanol to olefin reaction pathways operating under different reaction conditions were elucidated. This tandem process comprises dehydrogenation, ketonization, aldol condensation, C–C bond cleavage, and deoxygenation reactions. ABE and IBE mixtures conversion was also evaluated, achieving total olefin yields of ∼65 %. Isobutene and ethylene (∼91 %) were the main components of the olefin fraction, while pentenes, isohexenes, heptenes, and octenes were the remaining components. These results highlight the potential of Zn-Zr oxides to develop a sustainable production of olefins.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"312 ","pages":"Article 121705"},"PeriodicalIF":4.3000,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Science","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0009250925005287","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/19 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
ABE (acetone-butanol-ethanol) and IBE (isopropanol-butanol-ethanol) fermentation are well-established processes for producing ketones and alcohols from biomass. Using these low-carbon alcohols and acetone might improve the production of olefins.
The gas-phase synthesis of light olefins from 1-butanol, ABE and IBE was investigated on Zn-Zr mixed oxides and reference ZnO and ZrO2. Zn-Zr catalysts with different Zn/Zr molar ratios (0.11–0.43) were prepared by incipient wetness impregnation of Zn on Zr(OH)4. The 1-butanol to olefin reaction pathways operating under different reaction conditions were elucidated. This tandem process comprises dehydrogenation, ketonization, aldol condensation, C–C bond cleavage, and deoxygenation reactions. ABE and IBE mixtures conversion was also evaluated, achieving total olefin yields of ∼65 %. Isobutene and ethylene (∼91 %) were the main components of the olefin fraction, while pentenes, isohexenes, heptenes, and octenes were the remaining components. These results highlight the potential of Zn-Zr oxides to develop a sustainable production of olefins.
期刊介绍：
Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline.
Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.
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