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Efficient conversion of ethanol to 1-butanol and C(5)–C(9) alcohols over calcium carbide

Production of 1-butanol or alcohols with 4–9 carbon atoms (C(4)–C(9) alcohols) from widely available bio-ethanol has attracted much interest in recent years in academia and industry of renewable chemicals and liquid fuels. This work discloses for the first time that calcium carbide (CaC(2)) has a su...

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Autores principales: Wang, Dong, Liu, Zhenyu, Liu, Qingya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9065079/
https://www.ncbi.nlm.nih.gov/pubmed/35516851
http://dx.doi.org/10.1039/c9ra02568e
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author Wang, Dong
Liu, Zhenyu
Liu, Qingya
author_facet Wang, Dong
Liu, Zhenyu
Liu, Qingya
author_sort Wang, Dong
collection PubMed
description Production of 1-butanol or alcohols with 4–9 carbon atoms (C(4)–C(9) alcohols) from widely available bio-ethanol has attracted much interest in recent years in academia and industry of renewable chemicals and liquid fuels. This work discloses for the first time that calcium carbide (CaC(2)) has a superior catalytic activity in condensation of ethanol to C(4)–C(9) alcohols at 275–300 °C. The 1-butanol yield reached up to 24.5% with ethanol conversion of 62.4% at the optimized conditions. The by-products are mainly alcohols with 5–9 carbons besides 2-butanol, and the total yield of all the alcohols reached up to 56.3%. The reaction route was investigated through controlled experiments and quantitative analysis of the products. Results indicated that two reaction routes, aldol-condensation and self-condensation, took place simultaneously. The aldol-condensation route involves coupling of ethanol with acetaldehyde (formed from ethanol dehydrogenation) to form 2-butenol, which is subsequently hydrogenated to 1-butanol. The alkynyl moiety in CaC(2) plays an important role in the catalytic pathways of both routes and affords the good activity of CaC(2). CaC(2) is converted to acetylene [C(2)H(2)] and calcium hydroxide [Ca(OH)(2)] simultaneously by the H(2)O that was generated from the condensation of alcohols.
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spelling pubmed-90650792022-05-04 Efficient conversion of ethanol to 1-butanol and C(5)–C(9) alcohols over calcium carbide Wang, Dong Liu, Zhenyu Liu, Qingya RSC Adv Chemistry Production of 1-butanol or alcohols with 4–9 carbon atoms (C(4)–C(9) alcohols) from widely available bio-ethanol has attracted much interest in recent years in academia and industry of renewable chemicals and liquid fuels. This work discloses for the first time that calcium carbide (CaC(2)) has a superior catalytic activity in condensation of ethanol to C(4)–C(9) alcohols at 275–300 °C. The 1-butanol yield reached up to 24.5% with ethanol conversion of 62.4% at the optimized conditions. The by-products are mainly alcohols with 5–9 carbons besides 2-butanol, and the total yield of all the alcohols reached up to 56.3%. The reaction route was investigated through controlled experiments and quantitative analysis of the products. Results indicated that two reaction routes, aldol-condensation and self-condensation, took place simultaneously. The aldol-condensation route involves coupling of ethanol with acetaldehyde (formed from ethanol dehydrogenation) to form 2-butenol, which is subsequently hydrogenated to 1-butanol. The alkynyl moiety in CaC(2) plays an important role in the catalytic pathways of both routes and affords the good activity of CaC(2). CaC(2) is converted to acetylene [C(2)H(2)] and calcium hydroxide [Ca(OH)(2)] simultaneously by the H(2)O that was generated from the condensation of alcohols. The Royal Society of Chemistry 2019-06-17 /pmc/articles/PMC9065079/ /pubmed/35516851 http://dx.doi.org/10.1039/c9ra02568e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wang, Dong
Liu, Zhenyu
Liu, Qingya
Efficient conversion of ethanol to 1-butanol and C(5)–C(9) alcohols over calcium carbide
title Efficient conversion of ethanol to 1-butanol and C(5)–C(9) alcohols over calcium carbide
title_full Efficient conversion of ethanol to 1-butanol and C(5)–C(9) alcohols over calcium carbide
title_fullStr Efficient conversion of ethanol to 1-butanol and C(5)–C(9) alcohols over calcium carbide
title_full_unstemmed Efficient conversion of ethanol to 1-butanol and C(5)–C(9) alcohols over calcium carbide
title_short Efficient conversion of ethanol to 1-butanol and C(5)–C(9) alcohols over calcium carbide
title_sort efficient conversion of ethanol to 1-butanol and c(5)–c(9) alcohols over calcium carbide
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9065079/
https://www.ncbi.nlm.nih.gov/pubmed/35516851
http://dx.doi.org/10.1039/c9ra02568e
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