Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3
Crude glycerol, a by-product of biodiesel production, has drawn considerable attention to the importance of glycerol valorization through dry reforming reaction to obtain syngas. The selection of suitable catalysts is significantly important to enhance the catalytic activity in glycerol dry reformin...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022
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| Online Access: | http://umpir.ump.edu.my/id/eprint/33286/1/Publication%201.pdf |
| _version_ | 1825814180961189888 |
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| author | Nurul Asmawati, Roslan Sumaiya, Zainal Abidin Uyi Osazuwa, Osarieme Sim, Yee Chin Taufiq-Yap, Y.H |
| author_facet | Nurul Asmawati, Roslan Sumaiya, Zainal Abidin Uyi Osazuwa, Osarieme Sim, Yee Chin Taufiq-Yap, Y.H |
| author_sort | Nurul Asmawati, Roslan |
| collection | UMP |
| description | Crude glycerol, a by-product of biodiesel production, has drawn considerable attention to the importance of glycerol valorization through dry reforming reaction to obtain syngas. The selection of suitable catalysts is significantly important to enhance the catalytic activity in glycerol dry reforming (GDR) reactions. Hence, Ru with different loadings (i.e. 1%, 2%, 3%, 4%, 5%) doped in 15% Ni-extracted Al2O3(EA) was evaluated as catalyst via GDR process in this study. The catalyst prepared by ultrasonic-impregnation assisted technique was subjected to 8 h of CO2 reforming of glycerol. The reactant conversions and products yield was in the order of 3% Ru-15%Ni/EA > 5%Ru-15%Ni/EA > 4%Ru-15%Ni/EA > 2%Ru-15%Ni/EA > 1%Ru-15%Ni/EA > 15%Ni/EA, while the quantity of carbon deposited was in the order 15%Ni/EA > 1%Ru-15%Ni/EA > 2%Ru-15%Ni/EA >4%Ru-15%Ni/EA > 5%Ru-15%Ni/EA > 3%Ru-15%Ni/EA. 3%Ru-15%Ni/EA attained the greatest glycerol conversions of 90%, H2 yield of 80% and CO yield of 72% with the lowest carbon deposition of 7.38%. The dispersion of Ni particles on EA support evidently improved after the promotion step with Ru, which minimized the agglomeration of Ni and smaller crystallite size. In addition, the introduction of Ru increased the oxygen storage capacity which significantly reduced the formation of carbon during the reaction. GDR’s optimal reaction temperature obtained over 3%Ru-15%Ni/EA catalysts was at 1073 K (i.e. 93% glycerol conversion; 87% H2 yield; 79% CO yield). Over a 72 h time on stream at 1073 K, 3%Ru-15%Ni/EA catalyst had superior catalytic activity and stability. Overall, 3%Ru-15%Ni/EA catalyst was more coke-resistant than other promoted catalysts due to its accessible structure, higher oxygen storage capacity, moderate basicity, uniformly dispersed Ni phase and stronger Ru/Ni-EA interaction. |
| first_indexed | 2024-03-06T12:55:02Z |
| format | Article |
| id | UMPir33286 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:55:02Z |
| publishDate | 2022 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | UMPir332862022-11-10T03:27:01Z http://umpir.ump.edu.my/id/eprint/33286/ Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3 Nurul Asmawati, Roslan Sumaiya, Zainal Abidin Uyi Osazuwa, Osarieme Sim, Yee Chin Taufiq-Yap, Y.H TP Chemical technology Crude glycerol, a by-product of biodiesel production, has drawn considerable attention to the importance of glycerol valorization through dry reforming reaction to obtain syngas. The selection of suitable catalysts is significantly important to enhance the catalytic activity in glycerol dry reforming (GDR) reactions. Hence, Ru with different loadings (i.e. 1%, 2%, 3%, 4%, 5%) doped in 15% Ni-extracted Al2O3(EA) was evaluated as catalyst via GDR process in this study. The catalyst prepared by ultrasonic-impregnation assisted technique was subjected to 8 h of CO2 reforming of glycerol. The reactant conversions and products yield was in the order of 3% Ru-15%Ni/EA > 5%Ru-15%Ni/EA > 4%Ru-15%Ni/EA > 2%Ru-15%Ni/EA > 1%Ru-15%Ni/EA > 15%Ni/EA, while the quantity of carbon deposited was in the order 15%Ni/EA > 1%Ru-15%Ni/EA > 2%Ru-15%Ni/EA >4%Ru-15%Ni/EA > 5%Ru-15%Ni/EA > 3%Ru-15%Ni/EA. 3%Ru-15%Ni/EA attained the greatest glycerol conversions of 90%, H2 yield of 80% and CO yield of 72% with the lowest carbon deposition of 7.38%. The dispersion of Ni particles on EA support evidently improved after the promotion step with Ru, which minimized the agglomeration of Ni and smaller crystallite size. In addition, the introduction of Ru increased the oxygen storage capacity which significantly reduced the formation of carbon during the reaction. GDR’s optimal reaction temperature obtained over 3%Ru-15%Ni/EA catalysts was at 1073 K (i.e. 93% glycerol conversion; 87% H2 yield; 79% CO yield). Over a 72 h time on stream at 1073 K, 3%Ru-15%Ni/EA catalyst had superior catalytic activity and stability. Overall, 3%Ru-15%Ni/EA catalyst was more coke-resistant than other promoted catalysts due to its accessible structure, higher oxygen storage capacity, moderate basicity, uniformly dispersed Ni phase and stronger Ru/Ni-EA interaction. Elsevier 2022 Article NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/33286/1/Publication%201.pdf Nurul Asmawati, Roslan and Sumaiya, Zainal Abidin and Uyi Osazuwa, Osarieme and Sim, Yee Chin and Taufiq-Yap, Y.H (2022) Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3. Fuel, 314 (123050). pp. 1-14. ISSN 0016-2361. (Published) http://www.elsevier.com/locate/fuel https://doi.org/10.1016/j.fuel.2021.123050 |
| spellingShingle | TP Chemical technology Nurul Asmawati, Roslan Sumaiya, Zainal Abidin Uyi Osazuwa, Osarieme Sim, Yee Chin Taufiq-Yap, Y.H Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3 |
| title | Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3 |
| title_full | Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3 |
| title_fullStr | Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3 |
| title_full_unstemmed | Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3 |
| title_short | Enhanced syngas production from glycerol dry reforming over Ru promoted -Ni catalyst supported on extracted Al2O3 |
| title_sort | enhanced syngas production from glycerol dry reforming over ru promoted ni catalyst supported on extracted al2o3 |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/33286/1/Publication%201.pdf |
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