Comparison of in-situ and ex-situ catalytic pyrolysis in a micro-reactor system.
Identifieur interne : 002316 ( Main/Exploration ); précédent : 002315; suivant : 002317Comparison of in-situ and ex-situ catalytic pyrolysis in a micro-reactor system.
Auteurs : Kaige Wang [États-Unis] ; Patrick A. Johnston [États-Unis] ; Robert C. Brown [États-Unis]Source :
- Bioresource technology [ 1873-2976 ] ; 2014.
Descripteurs français
- KwdFr :
- MESH :
- composition chimique : Populus, Zéolites.
- synthèse chimique : Alcènes, Chauffage.
- Analyse de panne d'appareillage, Bioréacteurs, Catalyse, Conception d'appareillage, Miniaturisation, Température élevée.
English descriptors
- KwdEn :
- MESH :
- chemical , chemical synthesis : Alkenes.
- chemistry : Populus, Zeolites.
- instrumentation : Heating.
- Bioreactors, Catalysis, Equipment Design, Equipment Failure Analysis, Hot Temperature, Miniaturization.
Abstract
In this study, we compared ex-situ catalytic pyrolysis (CP) and in-situ CP of hybrid poplar in a micro-reactor system. When both pyrolysis and catalysis were performed at 700 °C, the carbon yield of olefins was greater for ex-situ CP than for in-situ CP (17.4% vs. 5.4%). On the other hand, in-situ CP produced more aromatic hydrocarbons than ex-situ CP (26.1% vs. 18.9%). The remarkably high yield of olefins from ex-situ CP indicates the potential of exploiting the process to preferentially produce olefins as a primary product from biomass, with aromatics being the secondary products. The carbon yield of carbonaceous residues from ex-situ CP was 18.6% compared to 31.3% for in-situ CP. Substantial carbon was deposited as char during ex-situ CP, which could be easily recovered as by-product, simplifying catalyst regeneration. The effects of catalyst loading, pyrolysis temperature and catalysis temperature on product distributions for ex-situ CP were also investigated. Our results showed that catalyst temperature strongly affected product distribution. While high catalyst temperature enhanced both olefin and aromatic production, yield of olefin increased to a greater extent than did aromatics. Neither pyrolysis temperature nor catalyst loadings had significant effect on product distribution for ex-situ CP.
DOI: 10.1016/j.biortech.2014.09.097
PubMed: 25299488
Affiliations:
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Johnston</name><affiliation wicri:level="4"><nlm:affiliation>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, United States.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011</wicri:regionArea><placeName><region type="state">Iowa</region><settlement type="city">Ames (Iowa)</settlement></placeName><orgName type="university">Université d'État de l'Iowa</orgName></affiliation></author><author><name sortKey="Brown, Robert C" sort="Brown, Robert C" uniqKey="Brown R" first="Robert C" last="Brown">Robert C. Brown</name><affiliation wicri:level="4"><nlm:affiliation>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, United States; Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, United States. 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Johnston</name><affiliation wicri:level="4"><nlm:affiliation>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, United States.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011</wicri:regionArea><placeName><region type="state">Iowa</region><settlement type="city">Ames (Iowa)</settlement></placeName><orgName type="university">Université d'État de l'Iowa</orgName></affiliation></author><author><name sortKey="Brown, Robert C" sort="Brown, Robert C" uniqKey="Brown R" first="Robert C" last="Brown">Robert C. Brown</name><affiliation wicri:level="4"><nlm:affiliation>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, United States; Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, United States. Electronic address: rcbrown3@iastate.edu.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, United States; Department of Mechanical Engineering, Iowa State University, Ames, IA 50011</wicri:regionArea><placeName><region type="state">Iowa</region><settlement type="city">Ames (Iowa)</settlement></placeName><orgName type="university">Université d'État de l'Iowa</orgName></affiliation></author></analytic><series><title level="j">Bioresource technology</title><idno type="eISSN">1873-2976</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alkenes (chemical synthesis)</term><term>Bioreactors (MeSH)</term><term>Catalysis (MeSH)</term><term>Equipment Design (MeSH)</term><term>Equipment Failure Analysis (MeSH)</term><term>Heating (instrumentation)</term><term>Hot Temperature (MeSH)</term><term>Miniaturization (MeSH)</term><term>Populus (chemistry)</term><term>Zeolites (chemistry)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Alcènes (synthèse chimique)</term><term>Analyse de panne d'appareillage (MeSH)</term><term>Bioréacteurs (MeSH)</term><term>Catalyse (MeSH)</term><term>Chauffage (instrumentation)</term><term>Conception d'appareillage (MeSH)</term><term>Miniaturisation (MeSH)</term><term>Populus (composition chimique)</term><term>Température élevée (MeSH)</term><term>Zéolites (composition chimique)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemical synthesis" xml:lang="en"><term>Alkenes</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Populus</term><term>Zeolites</term></keywords><keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Populus</term><term>Zéolites</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Heating</term></keywords><keywords scheme="MESH" qualifier="synthèse chimique" xml:lang="fr"><term>Alcènes</term><term>Chauffage</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Bioreactors</term><term>Catalysis</term><term>Equipment Design</term><term>Equipment Failure Analysis</term><term>Hot Temperature</term><term>Miniaturization</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Analyse de panne d'appareillage</term><term>Bioréacteurs</term><term>Catalyse</term><term>Conception d'appareillage</term><term>Miniaturisation</term><term>Température élevée</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this study, we compared ex-situ catalytic pyrolysis (CP) and in-situ CP of hybrid poplar in a micro-reactor system. When both pyrolysis and catalysis were performed at 700 °C, the carbon yield of olefins was greater for ex-situ CP than for in-situ CP (17.4% vs. 5.4%). On the other hand, in-situ CP produced more aromatic hydrocarbons than ex-situ CP (26.1% vs. 18.9%). The remarkably high yield of olefins from ex-situ CP indicates the potential of exploiting the process to preferentially produce olefins as a primary product from biomass, with aromatics being the secondary products. The carbon yield of carbonaceous residues from ex-situ CP was 18.6% compared to 31.3% for in-situ CP. Substantial carbon was deposited as char during ex-situ CP, which could be easily recovered as by-product, simplifying catalyst regeneration. The effects of catalyst loading, pyrolysis temperature and catalysis temperature on product distributions for ex-situ CP were also investigated. Our results showed that catalyst temperature strongly affected product distribution. While high catalyst temperature enhanced both olefin and aromatic production, yield of olefin increased to a greater extent than did aromatics. Neither pyrolysis temperature nor catalyst loadings had significant effect on product distribution for ex-situ CP.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25299488</PMID><DateCompleted><Year>2015</Year><Month>07</Month><Day>30</Day></DateCompleted><DateRevised><Year>2017</Year><Month>09</Month><Day>19</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-2976</ISSN><JournalIssue CitedMedium="Internet"><Volume>173</Volume><PubDate><Year>2014</Year><Month>Dec</Month></PubDate></JournalIssue><Title>Bioresource technology</Title><ISOAbbreviation>Bioresour Technol</ISOAbbreviation></Journal><ArticleTitle>Comparison of in-situ and ex-situ catalytic pyrolysis in a micro-reactor system.</ArticleTitle><Pagination><MedlinePgn>124-131</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0960-8524(14)01356-X</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.biortech.2014.09.097</ELocationID><Abstract><AbstractText>In this study, we compared ex-situ catalytic pyrolysis (CP) and in-situ CP of hybrid poplar in a micro-reactor system. When both pyrolysis and catalysis were performed at 700 °C, the carbon yield of olefins was greater for ex-situ CP than for in-situ CP (17.4% vs. 5.4%). On the other hand, in-situ CP produced more aromatic hydrocarbons than ex-situ CP (26.1% vs. 18.9%). The remarkably high yield of olefins from ex-situ CP indicates the potential of exploiting the process to preferentially produce olefins as a primary product from biomass, with aromatics being the secondary products. The carbon yield of carbonaceous residues from ex-situ CP was 18.6% compared to 31.3% for in-situ CP. Substantial carbon was deposited as char during ex-situ CP, which could be easily recovered as by-product, simplifying catalyst regeneration. The effects of catalyst loading, pyrolysis temperature and catalysis temperature on product distributions for ex-situ CP were also investigated. Our results showed that catalyst temperature strongly affected product distribution. While high catalyst temperature enhanced both olefin and aromatic production, yield of olefin increased to a greater extent than did aromatics. Neither pyrolysis temperature nor catalyst loadings had significant effect on product distribution for ex-situ CP.</AbstractText><CopyrightInformation>Copyright © 2014 Elsevier Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Wang</LastName><ForeName>Kaige</ForeName><Initials>K</Initials><AffiliationInfo><Affiliation>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, United States; Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, United States.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Johnston</LastName><ForeName>Patrick A</ForeName><Initials>PA</Initials><AffiliationInfo><Affiliation>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, United States.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Brown</LastName><ForeName>Robert C</ForeName><Initials>RC</Initials><AffiliationInfo><Affiliation>Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, United States; Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, United States. Electronic address: rcbrown3@iastate.edu.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>09</Month><Day>28</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Bioresour Technol</MedlineTA><NlmUniqueID>9889523</NlmUniqueID><ISSNLinking>0960-8524</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000475">Alkenes</NameOfSubstance></Chemical><Chemical><RegistryNumber>1318-02-1</RegistryNumber><NameOfSubstance UI="D017641">Zeolites</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000475" MajorTopicYN="N">Alkenes</DescriptorName><QualifierName UI="Q000138" MajorTopicYN="Y">chemical synthesis</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D019149" MajorTopicYN="N">Bioreactors</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002384" MajorTopicYN="N">Catalysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D004867" MajorTopicYN="N">Equipment Design</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D019544" MajorTopicYN="N">Equipment Failure Analysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006361" MajorTopicYN="N">Heating</DescriptorName><QualifierName UI="Q000295" MajorTopicYN="Y">instrumentation</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006358" MajorTopicYN="N">Hot Temperature</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008904" MajorTopicYN="N">Miniaturization</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D017641" MajorTopicYN="N">Zeolites</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Aromatics</Keyword><Keyword MajorTopicYN="N">Catalytic pyrolysis</Keyword><Keyword MajorTopicYN="N">Ex-situ</Keyword><Keyword MajorTopicYN="N">In-situ</Keyword><Keyword MajorTopicYN="N">Olefins</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2014</Year><Month>08</Month><Day>11</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2014</Year><Month>09</Month><Day>16</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2014</Year><Month>09</Month><Day>18</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>10</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>10</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2015</Year><Month>8</Month><Day>1</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">25299488</ArticleId><ArticleId IdType="pii">S0960-8524(14)01356-X</ArticleId><ArticleId IdType="doi">10.1016/j.biortech.2014.09.097</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Iowa</li></region><settlement><li>Ames (Iowa)</li></settlement><orgName><li>Université d'État de l'Iowa</li></orgName></list><tree><country name="États-Unis"><region name="Iowa"><name sortKey="Wang, Kaige" sort="Wang, Kaige" uniqKey="Wang K" first="Kaige" last="Wang">Kaige Wang</name></region><name sortKey="Brown, Robert C" sort="Brown, Robert C" uniqKey="Brown R" first="Robert C" last="Brown">Robert C. Brown</name><name sortKey="Johnston, Patrick A" sort="Johnston, Patrick A" uniqKey="Johnston P" first="Patrick A" last="Johnston">Patrick A. Johnston</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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