Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/237229 |
Resumo: | The addition of gallium or zinc to ZSM-5 increases the aromatic selectivity and decreases the olefin selectivity for furan conversion. Both the benzene and naphthalenes selectivities increase with small amounts of gallium or zinc addition. At 5 wt% metal loading this effect is more pronounced with zinc promoted ZSM-5 having about 25% higher benzene selectivity than the gallium promoted ZSM-5. Additionally, the decarbonylation and methane formation reactions were both increased by adding zinc or gallium to the catalyst. As zinc or gallium loading is increased, the amount of Brønsted acid sites decrease, while the quantity of Lewis acid sites increase. This effect was more pronounced with zinc, as a result of its greater effectiveness to exchange with protons at the Brønsted acid sites. The aromatic yield appears to correlate with this increase in Lewis acidity. The addition of zinc to ZSM-5 also altered the reaction chemistry occurring during the hydrolysis of furan, lowering propylene and increasing methane yields as zinc loading increased. |
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Espindola, Juliana da SilveiraGilbert, Christopher J.Pérez Lopez, Oscar WilliamTrierweiler, Jorge OtávioHuber, George Willis2022-04-14T04:41:46Z20200378-3820http://hdl.handle.net/10183/237229001113312The addition of gallium or zinc to ZSM-5 increases the aromatic selectivity and decreases the olefin selectivity for furan conversion. Both the benzene and naphthalenes selectivities increase with small amounts of gallium or zinc addition. At 5 wt% metal loading this effect is more pronounced with zinc promoted ZSM-5 having about 25% higher benzene selectivity than the gallium promoted ZSM-5. Additionally, the decarbonylation and methane formation reactions were both increased by adding zinc or gallium to the catalyst. As zinc or gallium loading is increased, the amount of Brønsted acid sites decrease, while the quantity of Lewis acid sites increase. This effect was more pronounced with zinc, as a result of its greater effectiveness to exchange with protons at the Brønsted acid sites. The aromatic yield appears to correlate with this increase in Lewis acidity. The addition of zinc to ZSM-5 also altered the reaction chemistry occurring during the hydrolysis of furan, lowering propylene and increasing methane yields as zinc loading increased.application/pdfengFuel processing technology [recurso eletrônico]. Amsterdam. Vol. 201 (May 2020), 106319, [11] p.CatalisadoresPiróliseGálioZincoFuran conversionZincGalliumZSM-5AcidityConversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sitesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001113312.pdf.txt001113312.pdf.txtExtracted Texttext/plain64288http://www.lume.ufrgs.br/bitstream/10183/237229/2/001113312.pdf.txtc1deee1cf1a02103e8d311d043bb910fMD52ORIGINAL001113312.pdfTexto completo (inglês)application/pdf1456872http://www.lume.ufrgs.br/bitstream/10183/237229/1/001113312.pdffcbe77dfff3f82647a8a020a71d5da55MD5110183/2372292022-04-20 04:46:49.729115oai:www.lume.ufrgs.br:10183/237229Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-04-20T07:46:49Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites |
title |
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites |
spellingShingle |
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites Espindola, Juliana da Silveira Catalisadores Pirólise Gálio Zinco Furan conversion Zinc Gallium ZSM-5 Acidity |
title_short |
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites |
title_full |
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites |
title_fullStr |
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites |
title_full_unstemmed |
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites |
title_sort |
Conversion of furan over gallium and zinc promoted ZSM-5 : the effect of metal and acid sites |
author |
Espindola, Juliana da Silveira |
author_facet |
Espindola, Juliana da Silveira Gilbert, Christopher J. Pérez Lopez, Oscar William Trierweiler, Jorge Otávio Huber, George Willis |
author_role |
author |
author2 |
Gilbert, Christopher J. Pérez Lopez, Oscar William Trierweiler, Jorge Otávio Huber, George Willis |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Espindola, Juliana da Silveira Gilbert, Christopher J. Pérez Lopez, Oscar William Trierweiler, Jorge Otávio Huber, George Willis |
dc.subject.por.fl_str_mv |
Catalisadores Pirólise Gálio Zinco |
topic |
Catalisadores Pirólise Gálio Zinco Furan conversion Zinc Gallium ZSM-5 Acidity |
dc.subject.eng.fl_str_mv |
Furan conversion Zinc Gallium ZSM-5 Acidity |
description |
The addition of gallium or zinc to ZSM-5 increases the aromatic selectivity and decreases the olefin selectivity for furan conversion. Both the benzene and naphthalenes selectivities increase with small amounts of gallium or zinc addition. At 5 wt% metal loading this effect is more pronounced with zinc promoted ZSM-5 having about 25% higher benzene selectivity than the gallium promoted ZSM-5. Additionally, the decarbonylation and methane formation reactions were both increased by adding zinc or gallium to the catalyst. As zinc or gallium loading is increased, the amount of Brønsted acid sites decrease, while the quantity of Lewis acid sites increase. This effect was more pronounced with zinc, as a result of its greater effectiveness to exchange with protons at the Brønsted acid sites. The aromatic yield appears to correlate with this increase in Lewis acidity. The addition of zinc to ZSM-5 also altered the reaction chemistry occurring during the hydrolysis of furan, lowering propylene and increasing methane yields as zinc loading increased. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020 |
dc.date.accessioned.fl_str_mv |
2022-04-14T04:41:46Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/237229 |
dc.identifier.issn.pt_BR.fl_str_mv |
0378-3820 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001113312 |
identifier_str_mv |
0378-3820 001113312 |
url |
http://hdl.handle.net/10183/237229 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Fuel processing technology [recurso eletrônico]. Amsterdam. Vol. 201 (May 2020), 106319, [11] p. |
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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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