A study of the catalytic hydroconversion of biocarboxylic acids to bioalcohols using octanoic acid as model reactant
Identifieur interne : 002077 ( Main/Repository ); précédent : 002076; suivant : 002078A study of the catalytic hydroconversion of biocarboxylic acids to bioalcohols using octanoic acid as model reactant
Auteurs : RBID : Pascal:12-0412838Descripteurs français
- Pascal (Inist)
- Réaction catalytique, Acide octanoïque, Modèle, Alumine, Catalyseur sur support, Catalyse hétérogène, Alliage, Destruction, Zéolite, Octane, Aldéhyde, Alcool, Aluminosilicate, Support, Lit fixe, Réacteur, Hydrogénation, Déshydratation, Sélectivité, Réduction chimique, Conversion, Indium, Additif, Cuivre.
- Wicri :
- concept : Alliage, Alcool, Déshydratation, Cuivre.
English descriptors
- KwdEn :
Abstract
The catalytic hydrodeoxygenation (HDO) of octanoic acid (C7COOH) to octene and octane was found to proceed in consecutive reaction through octyl aldehyde and octyl alcohol intermediates. Aluminosilicate and γ-alumina supported Cu and Cu,In catalysts were applied in a fixed bed flow-through reactor at 21 bar total pressure in the temperature range of 330-380 C. The feed was 7.1% C7COOH/84.3% H2/He. The WHSV of the acid was 1.82 h-1. The results suggested that at lower temperatures the rate of acid hydrogenation/dehydration determined the rate of the consecutive hydroconversion process and alcohol selectivity. The reduction of aldehyde was facile, thus, the aldehyde selectivity was low under most conditions. At lower temperatures and conversions the acid coverage was high hindering the catalytic dehydration of the product alcohol. At higher temperatures and acid conversions the alcohol dehydration activity of the catalyst determined the alcohol selectivity. The indium additive was found to increase the HDO activity and the alcohol selectivity of the copper catalysts significantly. The favorable effects of indium were attributed to the formation of new catalytically active Cu2In alloy phase.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">A study of the catalytic hydroconversion of biocarboxylic acids to bioalcohols using octanoic acid as model reactant</title><author><name sortKey="Harnos, Szabolcs" uniqKey="Harnos S">Szabolcs Harnos</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Materials and Environmental Chemistry, Research Center for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri u. 59-67</s1><s2>1025 Budapest</s2><s3>HUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Hongrie</country><placeName><settlement type="city">Budapest</settlement><region nuts="2">Hongrie centrale</region></placeName></affiliation></author><author><name sortKey="Onyestyak, Gy Rgy" uniqKey="Onyestyak G">Gy Rgy Onyestyak</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Materials and Environmental Chemistry, Research Center for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri u. 59-67</s1><s2>1025 Budapest</s2><s3>HUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Hongrie</country><placeName><settlement type="city">Budapest</settlement><region nuts="2">Hongrie centrale</region></placeName></affiliation></author><author><name sortKey="Valyon, J Zsef" uniqKey="Valyon J">J Zsef Valyon</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Materials and Environmental Chemistry, Research Center for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri u. 59-67</s1><s2>1025 Budapest</s2><s3>HUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Hongrie</country><placeName><settlement type="city">Budapest</settlement><region nuts="2">Hongrie centrale</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="inist">12-0412838</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 12-0412838 INIST</idno><idno type="RBID">Pascal:12-0412838</idno><idno type="wicri:Area/Main/Corpus">001694</idno><idno type="wicri:Area/Main/Repository">002077</idno></publicationStmt><seriesStmt><idno type="ISSN">0926-860X</idno><title level="j" type="abbreviated">Appl. catal., A Gen. : (Print)</title><title level="j" type="main">Applied catalysis. A, General : (Print)</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Additive</term><term>Alcohol</term><term>Aldehyde</term><term>Alloys</term><term>Alumina</term><term>Aluminosilicates</term><term>Catalytic reaction</term><term>Chemical reduction</term><term>Conversion</term><term>Copper</term><term>Dehydration</term><term>Destruction</term><term>Fixed bed</term><term>Heterogeneous catalysis</term><term>Hydrogenation</term><term>Indium</term><term>Models</term><term>Octane</term><term>Octanoic acid</term><term>Reactor</term><term>Selectivity</term><term>Support</term><term>Supported catalyst</term><term>Zeolite</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Réaction catalytique</term><term>Acide octanoïque</term><term>Modèle</term><term>Alumine</term><term>Catalyseur sur support</term><term>Catalyse hétérogène</term><term>Alliage</term><term>Destruction</term><term>Zéolite</term><term>Octane</term><term>Aldéhyde</term><term>Alcool</term><term>Aluminosilicate</term><term>Support</term><term>Lit fixe</term><term>Réacteur</term><term>Hydrogénation</term><term>Déshydratation</term><term>Sélectivité</term><term>Réduction chimique</term><term>Conversion</term><term>Indium</term><term>Additif</term><term>Cuivre</term></keywords><keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Alliage</term><term>Alcool</term><term>Déshydratation</term><term>Cuivre</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The catalytic hydrodeoxygenation (HDO) of octanoic acid (C<sub>7</sub>COOH) to octene and octane was found to proceed in consecutive reaction through octyl aldehyde and octyl alcohol intermediates. Aluminosilicate and γ-alumina supported Cu and Cu,In catalysts were applied in a fixed bed flow-through reactor at 21 bar total pressure in the temperature range of 330-380 C. The feed was 7.1% C<sub>7</sub>COOH/84.3% H<sub>2</sub>/He. The WHSV of the acid was 1.82 h<sup>-1</sup>. The results suggested that at lower temperatures the rate of acid hydrogenation/dehydration determined the rate of the consecutive hydroconversion process and alcohol selectivity. The reduction of aldehyde was facile, thus, the aldehyde selectivity was low under most conditions. At lower temperatures and conversions the acid coverage was high hindering the catalytic dehydration of the product alcohol. At higher temperatures and acid conversions the alcohol dehydration activity of the catalyst determined the alcohol selectivity. The indium additive was found to increase the HDO activity and the alcohol selectivity of the copper catalysts significantly. The favorable effects of indium were attributed to the formation of new catalytically active Cu<sub>2</sub>In alloy phase.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0926-860X</s0></fA01><fA03 i2="1"><s0>Appl. catal., A Gen. : (Print)</s0></fA03><fA05><s2>439-40</s2></fA05><fA08 i1="01" i2="1" l="ENG"><s1>A study of the catalytic hydroconversion of biocarboxylic acids to bioalcohols using octanoic acid as model reactant</s1></fA08><fA11 i1="01" i2="1"><s1>HARNOS (Szabolcs)</s1></fA11><fA11 i1="02" i2="1"><s1>ONYESTYAK (György)</s1></fA11><fA11 i1="03" i2="1"><s1>VALYON (József)</s1></fA11><fA14 i1="01"><s1>Institute of Materials and Environmental Chemistry, Research Center for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri u. 59-67</s1><s2>1025 Budapest</s2><s3>HUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></fA14><fA20><s1>31-40</s1></fA20><fA21><s1>2012</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>18840A</s2><s5>354000504478390050</s5></fA43><fA44><s0>0000</s0><s1>© 2012 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>27 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>12-0412838</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Applied catalysis. A, General : (Print)</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>The catalytic hydrodeoxygenation (HDO) of octanoic acid (C<sub>7</sub>COOH) to octene and octane was found to proceed in consecutive reaction through octyl aldehyde and octyl alcohol intermediates. Aluminosilicate and γ-alumina supported Cu and Cu,In catalysts were applied in a fixed bed flow-through reactor at 21 bar total pressure in the temperature range of 330-380 C. The feed was 7.1% C<sub>7</sub>COOH/84.3% H<sub>2</sub>/He. The WHSV of the acid was 1.82 h<sup>-1</sup>. The results suggested that at lower temperatures the rate of acid hydrogenation/dehydration determined the rate of the consecutive hydroconversion process and alcohol selectivity. The reduction of aldehyde was facile, thus, the aldehyde selectivity was low under most conditions. At lower temperatures and conversions the acid coverage was high hindering the catalytic dehydration of the product alcohol. At higher temperatures and acid conversions the alcohol dehydration activity of the catalyst determined the alcohol selectivity. The indium additive was found to increase the HDO activity and the alcohol selectivity of the copper catalysts significantly. 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