Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel
Untreated waste cooking oil (WCO) with significant levels of water and fatty acids (FFAs) was deoxygenated over Co3O4–La2O3/ACnano catalysts under an inert flow of N2 in a micro-batch closed system for the production of green diesel. The primary reaction mechanism was found to be the decarbonylation...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Royal Society of Chemistry
2020
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/88754/ http://psasir.upm.edu.my/id/eprint/88754/1/DIESEL.pdf |
| _version_ | 1848860688789798912 |
|---|---|
| author | Alsultan, Abdulkareem Ghassan Mijan, Nurul Asikin Alsultan, Mustafa G. Lee, Hwei Voon Wilson, Karen Yap, Taufiq Yun Hin |
| author_facet | Alsultan, Abdulkareem Ghassan Mijan, Nurul Asikin Alsultan, Mustafa G. Lee, Hwei Voon Wilson, Karen Yap, Taufiq Yun Hin |
| author_sort | Alsultan, Abdulkareem Ghassan |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Untreated waste cooking oil (WCO) with significant levels of water and fatty acids (FFAs) was deoxygenated over Co3O4–La2O3/ACnano catalysts under an inert flow of N2 in a micro-batch closed system for the production of green diesel. The primary reaction mechanism was found to be the decarbonylation/decarboxylation (deCOx) pathway in the Co3O4–La2O3/ACnano-catalyzed reaction. The effect of cobalt doping, catalyst loading, different deoxygenation (DO) systems, temperature and time were investigated. The results indicated that among the various cobalt doping levels (between 5 and 25 wt%), the maximum catalytic activity was exhibited with the Co : La ratio of 20 : 20 wt/wt% DO under N2 flow, which yielded 58% hydrocarbons with majority diesel-range (n-(C15 + C17)) selectivity (∼63%), using 3 wt% catalyst loading at a temperature of 350 °C within 180 min. Interestingly, 1 wt% of catalyst in the micro-batch closed system yielded 96% hydrocarbons with 93% n-(C15 + C17) selectivity within 60 min at 330 °C, 38.4 wt% FFA and 5% water content. An examination of the WCO under a series of FFA (0–20%) and water contents (0.5–20 wt%) indicated an enhanced yield of green diesel, and increased involvement of the deCOx mechanism. A high water content was found to increase the decomposition of triglycerides into FFAs and promote the DO reaction. The present work demonstrates that WCO with significant levels of water and FFAs generated by the food industry can provide an economical and naturally replenished raw material for the production of diesel. |
| first_indexed | 2025-11-15T12:49:13Z |
| format | Article |
| id | upm-88754 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:49:13Z |
| publishDate | 2020 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-887542021-10-06T08:46:36Z http://psasir.upm.edu.my/id/eprint/88754/ Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel Alsultan, Abdulkareem Ghassan Mijan, Nurul Asikin Alsultan, Mustafa G. Lee, Hwei Voon Wilson, Karen Yap, Taufiq Yun Hin Untreated waste cooking oil (WCO) with significant levels of water and fatty acids (FFAs) was deoxygenated over Co3O4–La2O3/ACnano catalysts under an inert flow of N2 in a micro-batch closed system for the production of green diesel. The primary reaction mechanism was found to be the decarbonylation/decarboxylation (deCOx) pathway in the Co3O4–La2O3/ACnano-catalyzed reaction. The effect of cobalt doping, catalyst loading, different deoxygenation (DO) systems, temperature and time were investigated. The results indicated that among the various cobalt doping levels (between 5 and 25 wt%), the maximum catalytic activity was exhibited with the Co : La ratio of 20 : 20 wt/wt% DO under N2 flow, which yielded 58% hydrocarbons with majority diesel-range (n-(C15 + C17)) selectivity (∼63%), using 3 wt% catalyst loading at a temperature of 350 °C within 180 min. Interestingly, 1 wt% of catalyst in the micro-batch closed system yielded 96% hydrocarbons with 93% n-(C15 + C17) selectivity within 60 min at 330 °C, 38.4 wt% FFA and 5% water content. An examination of the WCO under a series of FFA (0–20%) and water contents (0.5–20 wt%) indicated an enhanced yield of green diesel, and increased involvement of the deCOx mechanism. A high water content was found to increase the decomposition of triglycerides into FFAs and promote the DO reaction. The present work demonstrates that WCO with significant levels of water and FFAs generated by the food industry can provide an economical and naturally replenished raw material for the production of diesel. Royal Society of Chemistry 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/88754/1/DIESEL.pdf Alsultan, Abdulkareem Ghassan and Mijan, Nurul Asikin and Alsultan, Mustafa G. and Lee, Hwei Voon and Wilson, Karen and Yap, Taufiq Yun Hin (2020) Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel. RSC Advances, 10 (9). 4996 - 5009. ISSN 2046-2069 https://pubs.rsc.org/en/content/articlelanding/2020/ra/c9ra09516k 10.1039/c9ra09516k |
| spellingShingle | Alsultan, Abdulkareem Ghassan Mijan, Nurul Asikin Alsultan, Mustafa G. Lee, Hwei Voon Wilson, Karen Yap, Taufiq Yun Hin Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel |
| title | Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel |
| title_full | Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel |
| title_fullStr | Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel |
| title_full_unstemmed | Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel |
| title_short | Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel |
| title_sort | efficient deoxygenation of waste cooking oil over co3o4–la2o3-doped activated carbon for the production of diesel-like fuel |
| url | http://psasir.upm.edu.my/id/eprint/88754/ http://psasir.upm.edu.my/id/eprint/88754/ http://psasir.upm.edu.my/id/eprint/88754/ http://psasir.upm.edu.my/id/eprint/88754/1/DIESEL.pdf |