Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts
The unpromoted and B-promoted 10%Ni/SBA-15 catalysts synthesized via sequential incipient wetness impregnation approach were assessed for combined steam and CO2 reforming of methane (CSCRM) at various reaction temperatures of 973–1073 K and stoichiometric feed composition. An expected and noteworthy...
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2018
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my.ump.umpir.203742018-07-31T07:01:24Z http://umpir.ump.edu.my/id/eprint/20374/ Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts Tan, Ji Siang Pham, Thong L. M. Cuong, Nguyen Van Phuong, Pham T. T. Phuc, Nguyen Huu Huy Truong, Quang Duc Vo, Dai-Viet N. TP Chemical technology The unpromoted and B-promoted 10%Ni/SBA-15 catalysts synthesized via sequential incipient wetness impregnation approach were assessed for combined steam and CO2 reforming of methane (CSCRM) at various reaction temperatures of 973–1073 K and stoichiometric feed composition. An expected and noteworthy drop in mean NiO crystallite size and BET surface area with boron promotion from 1% to 5%B loading could be due to the agglomeration of B2O3 particles and deboration reaction during calcination and hence blocking mesopores of SBA-15 support at elevated B composition. The complete NiO reduction to metallic Ni0 form was achieved during H2 activation and the reduction temperature of NiO phase was shifted towards higher temperature with B-addition owing to enhancing interaction between the acidic B2O3 and basic NiO phases. For all reaction temperature employed, 3%B appeared to be the optimal promoter loading in terms of reactant conversions and 3%B-10%Ni/SBA-15 catalyst revealed the greatest H2 yield (69.4%) at 1073 K. In addition, CH4 and CO2 conversions were enhanced about 23.2% and 32.4%, correspondingly with rising reaction temperature from 973 to 1073 K. Ratio of H2 to CO varied from 1.26 to 2.71 and the desired H2/CO ratio of about 2 favored for Fischer-Tropsch synthesis was achieved on 3%B-10%Ni/SBA-15 sample at 973 K. Boron promoter suppressed graphitic carbon formation and the amount of carbonaceous deposition was reduced about 4 times. Noticeably, 3%B-10%Ni/SBA-15 was also resilient to metallic Ni0 re-oxidation throughout CSCRM. Elsevier Ltd 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/20374/1/Combined%20steam%20and%20CO2%20reforming1.pdf Tan, Ji Siang and Pham, Thong L. M. and Cuong, Nguyen Van and Phuong, Pham T. T. and Phuc, Nguyen Huu Huy and Truong, Quang Duc and Vo, Dai-Viet N. (2018) Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts. Microporous and Mesoporous Materials, 262. pp. 122-132. ISSN 1387-1811. (Published) https://doi.org/10.1016/j.micromeso.2017.11.028 https://doi.org/10.1016/j.micromeso.2017.11.028 |
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TP Chemical technology Tan, Ji Siang Pham, Thong L. M. Cuong, Nguyen Van Phuong, Pham T. T. Phuc, Nguyen Huu Huy Truong, Quang Duc Vo, Dai-Viet N. Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts |
| description |
The unpromoted and B-promoted 10%Ni/SBA-15 catalysts synthesized via sequential incipient wetness impregnation approach were assessed for combined steam and CO2 reforming of methane (CSCRM) at various reaction temperatures of 973–1073 K and stoichiometric feed composition. An expected and noteworthy drop in mean NiO crystallite size and BET surface area with boron promotion from 1% to 5%B loading could be due to the agglomeration of B2O3 particles and deboration reaction during calcination and hence blocking mesopores of SBA-15 support at elevated B composition. The complete NiO reduction to metallic Ni0 form was achieved during H2 activation and the reduction temperature of NiO phase was shifted towards higher temperature with B-addition owing to enhancing interaction between the acidic B2O3 and basic NiO phases. For all reaction temperature employed, 3%B appeared to be the optimal promoter loading in terms of reactant conversions and 3%B-10%Ni/SBA-15 catalyst revealed the greatest H2 yield (69.4%) at 1073 K. In addition, CH4 and CO2 conversions were enhanced about 23.2% and 32.4%, correspondingly with rising reaction temperature from 973 to 1073 K. Ratio of H2 to CO varied from 1.26 to 2.71 and the desired H2/CO ratio of about 2 favored for Fischer-Tropsch synthesis was achieved on 3%B-10%Ni/SBA-15 sample at 973 K. Boron promoter suppressed graphitic carbon formation and the amount of carbonaceous deposition was reduced about 4 times. Noticeably, 3%B-10%Ni/SBA-15 was also resilient to metallic Ni0 re-oxidation throughout CSCRM. |
| format |
Article |
| author |
Tan, Ji Siang Pham, Thong L. M. Cuong, Nguyen Van Phuong, Pham T. T. Phuc, Nguyen Huu Huy Truong, Quang Duc Vo, Dai-Viet N. |
| author_facet |
Tan, Ji Siang Pham, Thong L. M. Cuong, Nguyen Van Phuong, Pham T. T. Phuc, Nguyen Huu Huy Truong, Quang Duc Vo, Dai-Viet N. |
| author_sort |
Tan, Ji Siang |
| title |
Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts |
| title_short |
Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts |
| title_full |
Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts |
| title_fullStr |
Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts |
| title_full_unstemmed |
Combined steam and CO2 reforming of methane for syngas production over carbon-resistant boron-promoted Ni/SBA-15 catalysts |
| title_sort |
combined steam and co2 reforming of methane for syngas production over carbon-resistant boron-promoted ni/sba-15 catalysts |
| publisher |
Elsevier Ltd |
| publishDate |
2018 |
| url |
http://umpir.ump.edu.my/id/eprint/20374/1/Combined%20steam%20and%20CO2%20reforming1.pdf http://umpir.ump.edu.my/id/eprint/20374/ https://doi.org/10.1016/j.micromeso.2017.11.028 https://doi.org/10.1016/j.micromeso.2017.11.028 |
| _version_ |
1822920015478784000 |
| score |
13.251813 |