Transesterification of Sunflower Oil on Single Step Sol-Gel Made Al2o3 Supported Cao Catalysts: Effect of Basic Strength and Basicity on Turnover Frequency
| dc.contributor.author | Umdu, Emin Selahattin | |
| dc.contributor.author | Şeker, Erol | |
| dc.coverage.doi | 10.1016/j.biortech.2011.11.135 | |
| dc.date.accessioned | 2017-02-09T10:41:16Z | |
| dc.date.available | 2017-02-09T10:41:16Z | |
| dc.date.issued | 2012 | |
| dc.description.abstract | The activities of single step sol-gel made calcium oxide on alumina catalysts were studied as a function of CaO loading, methanol/oil molar ratio and the amount of the catalyst in the transesterification of sunflower oil at 50°C. Also, the turnover frequency (TOF) of the catalysts was calculated to better understand the relationship between the basicity/basic strength and the catalytic activity. From volcano curve (TOF vs. basic strength), it was found that under 50°C and methanol/oil molar ratio of 9, 60% CaO/Al 2O 3 had the highest turnover frequency, 0.028s -1, whereas 85% CaO/Al 2O 3 showed the highest biodiesel yield, ∼96.6%, but TOF obtained on it was 0.012s -1. It seemed that 60% CaO catalyst had the proper basic strength to obtain the highest TOF. © 2011 Elsevier Ltd. | en_US |
| dc.description.sponsorship | Izmir Institute of Technology project (2008IYTE16) | en_US |
| dc.identifier.citation | Umdu, E. S., and Şeker, E. (2012). Transesterification of sunflower oil on single step sol-gel made Al2O3 supported CaO catalysts: Effect of basic strength and basicity on turnover frequency. Bioresource Technology, 106, 178-181. doi:10.1016/j.biortech.2011.11.135 | en_US |
| dc.identifier.doi | 10.1016/j.biortech.2011.11.135 | |
| dc.identifier.doi | 10.1016/j.biortech.2011.11.135 | en_US |
| dc.identifier.issn | 0960-8524 | |
| dc.identifier.scopus | 2-s2.0-84855351614 | |
| dc.identifier.uri | http://doi.org/10.1016/j.biortech.2011.11.135 | |
| dc.identifier.uri | https://hdl.handle.net/11147/4819 | |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier Ltd. | en_US |
| dc.relation.ispartof | Bioresource Technology | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.subject | Calcium oxide | en_US |
| dc.subject | Alumina | en_US |
| dc.subject | Sol-Gel | en_US |
| dc.subject | Sunflower transesterification | en_US |
| dc.subject | Turnover frequency | en_US |
| dc.subject | Catalyst activity | en_US |
| dc.title | Transesterification of Sunflower Oil on Single Step Sol-Gel Made Al2o3 Supported Cao Catalysts: Effect of Basic Strength and Basicity on Turnover Frequency | en_US |
| dc.type | Article | en_US |
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| gdc.author.institutional | Umdu, Emin Selahattin | |
| gdc.author.institutional | Şeker, Erol | |
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| gdc.description.department | İzmir Institute of Technology. Chemical Engineering | en_US |
| gdc.description.endpage | 181 | en_US |
| gdc.description.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
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| gdc.description.startpage | 178 | en_US |
| gdc.description.volume | 106 | en_US |
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| gdc.identifier.pmid | 22197075 | |
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| gdc.oaire.keywords | Sol-Gel | |
| gdc.oaire.keywords | Turnover frequency | |
| gdc.oaire.keywords | Time Factors | |
| gdc.oaire.keywords | Esterification | |
| gdc.oaire.keywords | Alumina | |
| gdc.oaire.keywords | Temperature | |
| gdc.oaire.keywords | Calcium oxide | |
| gdc.oaire.keywords | Oxides | |
| gdc.oaire.keywords | Sunflower transesterification | |
| gdc.oaire.keywords | Calcium Compounds | |
| gdc.oaire.keywords | Catalysis | |
| gdc.oaire.keywords | Biofuels | |
| gdc.oaire.keywords | Catalyst activity | |
| gdc.oaire.keywords | Aluminum Oxide | |
| gdc.oaire.keywords | Plant Oils | |
| gdc.oaire.keywords | Sunflower Oil | |
| gdc.oaire.keywords | Gels | |
| gdc.oaire.keywords | Porosity | |
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