Ethanol Steam Reforming on Ni Catalysts Supported by Ordered Mesoporous Materials
碩士 === 國防大學理工學院 === 化學工程碩士班 === 101 === Use of ordered mesoporous materials (OMMs) as supports for the supported Ni-based catalysts were investigated in the hydrogen production via stream reforming of ethanol (SRE). In order to study the supports effect, inorganic (SBA-15) and organic (CMK-3 and ord...
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ndltd-TW-101CCIT05000142015-10-13T22:07:37Z http://ndltd.ncl.edu.tw/handle/55101123553998318369 Ethanol Steam Reforming on Ni Catalysts Supported by Ordered Mesoporous Materials 中孔材料負載Ni觸媒應用於乙醇蒸氣重組產氫之研究 Kung,Hsuan-Ying 龔萱穎 碩士 國防大學理工學院 化學工程碩士班 101 Use of ordered mesoporous materials (OMMs) as supports for the supported Ni-based catalysts were investigated in the hydrogen production via stream reforming of ethanol (SRE). In order to study the supports effect, inorganic (SBA-15) and organic (CMK-3 and ordered mesoporous carbon, OMC) mesoporous materials were used. Supported catalysts were prepared by impregnation method from Ni(NO3)2•6H2O with SBA-15, CMK-3 and OMC, which denoted as Ni/SBA-15, Ni/CMK-3 and Ni/OMC, respectively. The structural order and textural properties of the Ni/OMM catalysts were studied by X-ray powder diffraction (XRD), nitrogen sorption (N2-BET) and transmission electron microscopy (TEM), which showed the Ni-based catalysts with hexagonally ordered mesoporous structure, small metal particle size, highly metal dispersion and high surface area. SRE was tested in a fixed-bed reactor under an H2O/EtOH molar ratio of 13 and 22,000 h-1 GHSV. High hydrogen selectivity and ethanol conversion were obtained with all Ni-based catalysts at high temperature. At 500 oC, the highest hydrogen yield up to 5.79 was obtained. Particularly, the Ni/CMK-3 catalyst was able to completely convert ethanol at 250 oC. The products of H2 (71 %), CO2 (19 %), CH4 (9 %) and negligible CO were produced at 450 oC. The coke deposition of spent Ni-based catalysts had also characterized by TEM, Raman spectroscopy, element analysis (EA). A lower amount of carbon nanotubes and carbon nanofibers were observed in Ni/CMK-3 catalyst. Moreover, the catalytic stability maintained over 400 h with high performance at 450 oC. The preliminary results indicated that the OMMs used could enhance the metal dispersion to inhibit sintering of metal at high reaction temperature. Wang,Chen-Bin 汪成斌 2013 學位論文 ; thesis 122 zh-TW |
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碩士 === 國防大學理工學院 === 化學工程碩士班 === 101 === Use of ordered mesoporous materials (OMMs) as supports for the supported Ni-based catalysts were investigated in the hydrogen production via stream reforming of ethanol (SRE). In order to study the supports effect, inorganic (SBA-15) and organic (CMK-3 and ordered mesoporous carbon, OMC) mesoporous materials were used. Supported catalysts were prepared by impregnation method from Ni(NO3)2•6H2O with SBA-15, CMK-3 and OMC, which denoted as Ni/SBA-15, Ni/CMK-3 and Ni/OMC, respectively. The structural order and textural properties of the Ni/OMM catalysts were studied by X-ray powder diffraction (XRD), nitrogen sorption (N2-BET) and transmission electron microscopy (TEM), which showed the Ni-based catalysts with hexagonally ordered mesoporous structure, small metal particle size, highly metal dispersion and high surface area.
SRE was tested in a fixed-bed reactor under an H2O/EtOH molar ratio of 13 and 22,000 h-1 GHSV. High hydrogen selectivity and ethanol conversion were obtained with all Ni-based catalysts at high temperature. At 500 oC, the highest hydrogen yield up to 5.79 was obtained. Particularly, the Ni/CMK-3 catalyst was able to completely convert ethanol at 250 oC. The products of H2 (71 %), CO2 (19 %), CH4 (9 %) and negligible CO were produced at 450 oC. The coke deposition of spent Ni-based catalysts had also characterized by TEM, Raman spectroscopy, element analysis (EA). A lower amount of carbon nanotubes and carbon nanofibers were observed in Ni/CMK-3 catalyst. Moreover, the catalytic stability maintained over 400 h with high performance at 450 oC. The preliminary results indicated that the OMMs used could enhance the metal dispersion to inhibit sintering of metal at high reaction temperature.
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author2 |
Wang,Chen-Bin |
author_facet |
Wang,Chen-Bin Kung,Hsuan-Ying 龔萱穎 |
author |
Kung,Hsuan-Ying 龔萱穎 |
spellingShingle |
Kung,Hsuan-Ying 龔萱穎 Ethanol Steam Reforming on Ni Catalysts Supported by Ordered Mesoporous Materials |
author_sort |
Kung,Hsuan-Ying |
title |
Ethanol Steam Reforming on Ni Catalysts Supported by Ordered Mesoporous Materials |
title_short |
Ethanol Steam Reforming on Ni Catalysts Supported by Ordered Mesoporous Materials |
title_full |
Ethanol Steam Reforming on Ni Catalysts Supported by Ordered Mesoporous Materials |
title_fullStr |
Ethanol Steam Reforming on Ni Catalysts Supported by Ordered Mesoporous Materials |
title_full_unstemmed |
Ethanol Steam Reforming on Ni Catalysts Supported by Ordered Mesoporous Materials |
title_sort |
ethanol steam reforming on ni catalysts supported by ordered mesoporous materials |
publishDate |
2013 |
url |
http://ndltd.ncl.edu.tw/handle/55101123553998318369 |
work_keys_str_mv |
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