Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta scientiarum. Technology (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/60830 |
Resumo: | Hydrogen gas is an ideal fuel due to its higher calorific value among fuels and minimal environmental impact on their energy applications. However, the high cost around high reactivity, explosion risks and extremely low energy density, make it unfeasible to be used as fuel in large quantities scale. There are some possibilities to circumvent these limitations, including obtaining and converting energy through fuel cells, which is very promising. Research in this field has been summarized in recent decades, motivated by the environmental problems faced due to the dependence on non-renewable energy matrices. From this, this study aimed to improve the steam methanol reforming using CuO/ZnO/Al2O3 catalyst. The catalyst was characterized by atomic absorption spectroscopy, N2 physisorption and XRD. Catalytic tests were carried out in a laboratory scale fixed bed reactor at 300°C, atmospheric pressure and in differential conditions (methanol conversion < 10%); a previous run for catalyst synthesis validation in relation to the results obtained in the literature for the same conditions was evaluated. Subsequently, it was found that the thermal degradation of methanol at 300°C without the presence of the catalyst was negligible, and then operational conditions were established to obtain methanol conversions lower than 10%. Then, the initial deactivation of the catalyst over 31h. Also identifying the stability after 7 h in reaction with average conversion into 9.7% of methanol, showing high stability, in addition to good reproducibility on the part of synthesis in optimal composition. Then, experiments were carried out for the molar ratios 2:1 and 4:1 with methanol conversions of 15.5% and 6.6%, respectively. Note that performing the average of the 4:1 and 2:1 methanol conversion in 14.6% obtained at indicating that the upper boundary molar ratios (4:1) compensates for the conversion reduction in 2:1, achieving a result superior to the reference 3:1. |
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Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst fuel cells; heterogeneous catalysis; CuO/ZnO/Al2O3 catalyst in composition optimized; fixed bed reactor.fuel cells; heterogeneous catalysis; CuO/ZnO/Al2O3 catalyst in composition optimized; fixed bed reactor.Hydrogen gas is an ideal fuel due to its higher calorific value among fuels and minimal environmental impact on their energy applications. However, the high cost around high reactivity, explosion risks and extremely low energy density, make it unfeasible to be used as fuel in large quantities scale. There are some possibilities to circumvent these limitations, including obtaining and converting energy through fuel cells, which is very promising. Research in this field has been summarized in recent decades, motivated by the environmental problems faced due to the dependence on non-renewable energy matrices. From this, this study aimed to improve the steam methanol reforming using CuO/ZnO/Al2O3 catalyst. The catalyst was characterized by atomic absorption spectroscopy, N2 physisorption and XRD. Catalytic tests were carried out in a laboratory scale fixed bed reactor at 300°C, atmospheric pressure and in differential conditions (methanol conversion < 10%); a previous run for catalyst synthesis validation in relation to the results obtained in the literature for the same conditions was evaluated. Subsequently, it was found that the thermal degradation of methanol at 300°C without the presence of the catalyst was negligible, and then operational conditions were established to obtain methanol conversions lower than 10%. Then, the initial deactivation of the catalyst over 31h. Also identifying the stability after 7 h in reaction with average conversion into 9.7% of methanol, showing high stability, in addition to good reproducibility on the part of synthesis in optimal composition. Then, experiments were carried out for the molar ratios 2:1 and 4:1 with methanol conversions of 15.5% and 6.6%, respectively. Note that performing the average of the 4:1 and 2:1 methanol conversion in 14.6% obtained at indicating that the upper boundary molar ratios (4:1) compensates for the conversion reduction in 2:1, achieving a result superior to the reference 3:1.Hydrogen gas is an ideal fuel due to its higher calorific value among fuels and minimal environmental impact on their energy applications. However, the high cost around high reactivity, explosion risks and extremely low energy density, make it unfeasible to be used as fuel in large quantities scale. There are some possibilities to circumvent these limitations, including obtaining and converting energy through fuel cells, which is very promising. Research in this field has been summarized in recent decades, motivated by the environmental problems faced due to the dependence on non-renewable energy matrices. From this, this study aimed to improve the steam methanol reforming using CuO/ZnO/Al2O3 catalyst. The catalyst was characterized by atomic absorption spectroscopy, N2 physisorption and XRD. Catalytic tests were carried out in a laboratory scale fixed bed reactor at 300°C, atmospheric pressure and in differential conditions (methanol conversion < 10%); a previous run for catalyst synthesis validation in relation to the results obtained in the literature for the same conditions was evaluated. Subsequently, it was found that the thermal degradation of methanol at 300°C without the presence of the catalyst was negligible, and then operational conditions were established to obtain methanol conversions lower than 10%. Then, the initial deactivation of the catalyst over 31h. Also identifying the stability after 7 h in reaction with average conversion into 9.7% of methanol, showing high stability, in addition to good reproducibility on the part of synthesis in optimal composition. Then, experiments were carried out for the molar ratios 2:1 and 4:1 with methanol conversions of 15.5% and 6.6%, respectively. Note that performing the average of the 4:1 and 2:1 methanol conversion in 14.6% obtained at indicating that the upper boundary molar ratios (4:1) compensates for the conversion reduction in 2:1, achieving a result superior to the reference 3:1.Universidade Estadual De Maringá2023-04-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/6083010.4025/actascitechnol.v45i1.60830Acta Scientiarum. Technology; Vol 45 (2023): Publicação contínua; e60830Acta Scientiarum. Technology; v. 45 (2023): Publicação contínua; e608301806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/60830/751375155826Copyright (c) 2023 Acta Scientiarum. Technologyhttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccess Oliveira, Leonardo Silva Prado deBarreto, Rafael Dei Tos Silva, Fernando Alves da Jorge, Luiz Mário de Matos2023-05-25T13:57:14Zoai:periodicos.uem.br/ojs:article/60830Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2023-05-25T13:57:14Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst |
title |
Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst |
spellingShingle |
Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst Oliveira, Leonardo Silva Prado de fuel cells; heterogeneous catalysis; CuO/ZnO/Al2O3 catalyst in composition optimized; fixed bed reactor. fuel cells; heterogeneous catalysis; CuO/ZnO/Al2O3 catalyst in composition optimized; fixed bed reactor. |
title_short |
Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst |
title_full |
Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst |
title_fullStr |
Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst |
title_full_unstemmed |
Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst |
title_sort |
Evaluation of feeding molar rate in mini fixed bed reactor for methanol steam reforming with pre-optimized composition of CuO/ZnO/Al2O3 catalyst |
author |
Oliveira, Leonardo Silva Prado de |
author_facet |
Oliveira, Leonardo Silva Prado de Barreto, Rafael Dei Tos Silva, Fernando Alves da Jorge, Luiz Mário de Matos |
author_role |
author |
author2 |
Barreto, Rafael Dei Tos Silva, Fernando Alves da Jorge, Luiz Mário de Matos |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Leonardo Silva Prado de Barreto, Rafael Dei Tos Silva, Fernando Alves da Jorge, Luiz Mário de Matos |
dc.subject.por.fl_str_mv |
fuel cells; heterogeneous catalysis; CuO/ZnO/Al2O3 catalyst in composition optimized; fixed bed reactor. fuel cells; heterogeneous catalysis; CuO/ZnO/Al2O3 catalyst in composition optimized; fixed bed reactor. |
topic |
fuel cells; heterogeneous catalysis; CuO/ZnO/Al2O3 catalyst in composition optimized; fixed bed reactor. fuel cells; heterogeneous catalysis; CuO/ZnO/Al2O3 catalyst in composition optimized; fixed bed reactor. |
description |
Hydrogen gas is an ideal fuel due to its higher calorific value among fuels and minimal environmental impact on their energy applications. However, the high cost around high reactivity, explosion risks and extremely low energy density, make it unfeasible to be used as fuel in large quantities scale. There are some possibilities to circumvent these limitations, including obtaining and converting energy through fuel cells, which is very promising. Research in this field has been summarized in recent decades, motivated by the environmental problems faced due to the dependence on non-renewable energy matrices. From this, this study aimed to improve the steam methanol reforming using CuO/ZnO/Al2O3 catalyst. The catalyst was characterized by atomic absorption spectroscopy, N2 physisorption and XRD. Catalytic tests were carried out in a laboratory scale fixed bed reactor at 300°C, atmospheric pressure and in differential conditions (methanol conversion < 10%); a previous run for catalyst synthesis validation in relation to the results obtained in the literature for the same conditions was evaluated. Subsequently, it was found that the thermal degradation of methanol at 300°C without the presence of the catalyst was negligible, and then operational conditions were established to obtain methanol conversions lower than 10%. Then, the initial deactivation of the catalyst over 31h. Also identifying the stability after 7 h in reaction with average conversion into 9.7% of methanol, showing high stability, in addition to good reproducibility on the part of synthesis in optimal composition. Then, experiments were carried out for the molar ratios 2:1 and 4:1 with methanol conversions of 15.5% and 6.6%, respectively. Note that performing the average of the 4:1 and 2:1 methanol conversion in 14.6% obtained at indicating that the upper boundary molar ratios (4:1) compensates for the conversion reduction in 2:1, achieving a result superior to the reference 3:1. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-04-28 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/60830 10.4025/actascitechnol.v45i1.60830 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/60830 |
identifier_str_mv |
10.4025/actascitechnol.v45i1.60830 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/60830/751375155826 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2023 Acta Scientiarum. Technology http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2023 Acta Scientiarum. Technology http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Technology; Vol 45 (2023): Publicação contínua; e60830 Acta Scientiarum. Technology; v. 45 (2023): Publicação contínua; e60830 1806-2563 1807-8664 reponame:Acta scientiarum. Technology (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta scientiarum. Technology (Online) |
collection |
Acta scientiarum. Technology (Online) |
repository.name.fl_str_mv |
Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actatech@uem.br |
_version_ |
1799315338076094464 |