Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/92571
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Applied Biology and Chemical Technology | - |
dc.creator | Lau, PC | - |
dc.creator | Kwong, TL | - |
dc.creator | Yung, KF | - |
dc.date.accessioned | 2022-04-26T06:45:36Z | - |
dc.date.available | 2022-04-26T06:45:36Z | - |
dc.identifier.issn | 0960-1481 | - |
dc.identifier.uri | http://hdl.handle.net/10397/92571 | - |
dc.language.iso | en | en_US |
dc.publisher | Pergamon Press | en_US |
dc.subject | Bio-lubricants | en_US |
dc.subject | Biodiesel | en_US |
dc.subject | Kinetic study | en_US |
dc.subject | Manganese glycerolate | en_US |
dc.subject | Mechanistic study | en_US |
dc.subject | Simultaneous esterification and transesterification | en_US |
dc.title | Manganese glycerolate catalyzed simultaneous esterification and transesterification: the kinetic and mechanistic study, and application in biodiesel and bio-lubricants synthesis | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 549 | - |
dc.identifier.epage | 558 | - |
dc.identifier.volume | 189 | - |
dc.identifier.doi | 10.1016/j.renene.2022.02.127 | - |
dcterms.abstract | Several characterizations (BET, BJH, XPS, and elemental analysis) were employed further to examine the manganese glycerolate. The elemental analysis proved that the ratio of manganese-to-glycerol is 3:4. The MnGly catalyst is formed as a mixed-valence compound in an Mn2+ to Mn3+ ratio of 1:2 that aligned the results of the surface ratio of Mn2+ to Mn3+ from XPS analysis. This compound provides a total of eight positive charges to compensate for the eight negative charges generated from the hydroxyl group (-OH) in four glycerol ligands. The activation energy (112.7 kJ mol−1) suggests that the reaction undergoes surface-mediated catalysis. The XPS analysis and kinetic study prove the co-existence of divalent and trivalent manganese in MnGly catalyst, demonstrating a flexible coordination geometry between tetrahedral and octahedral. It facilitates the coordination of two methanol to Mn2+ center with an octahedral geometry as the first step of the mechanism for biodiesel synthesis. The yield could achieve more than 99% in 1.5 h under the optimized reaction conditions. The ANOVA revealed that reaction temperature is the most significant factor affecting the production of FAME, with a contribution of 82.84%. This catalytic system also demonstrated high compatibility with higher alcohols for exploring bio-lubricants. | - |
dcterms.accessRights | embargoed access | en_US |
dcterms.bibliographicCitation | Renewable energy, Apr. 2022, v. 189, p. 549-558 | - |
dcterms.isPartOf | Renewable energy | - |
dcterms.issued | 2022-04 | - |
dc.identifier.scopus | 2-s2.0-85126511497 | - |
dc.identifier.eissn | 1879-0682 | - |
dc.description.validate | 202204 bcrc | - |
dc.description.oa | Not applicable | en_US |
dc.identifier.FolderNumber | a1271 | en_US |
dc.identifier.SubFormID | 44418 | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | PolyU 153053/17P, PolyU P0032339 | en_US |
dc.description.pubStatus | Published | en_US |
dc.date.embargo | 2024-04-30 | en_US |
Appears in Collections: | Journal/Magazine Article |
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