The Effect of Preparation Method on Ni/Ce/Al Catalyst for High Temperature Water-Gas Shift Reaction
Апстракт
High temperature water gas shift (HT-WGS) is an important catalytic process connected with reforming process in hydrogen production. Ni/CeO2-Al2O3 (or Al2O3) catalysts were studied in this work on the effect of catalyst preparation method toward the physicochemical properties and the HT-WGS activity. Ni/CeO2-Al2O3 were prepared by sol-gel and impregnation methods whereas Ni/Al2O3 was prepared by impregnation method. The catalyst samples were characterized by XRD, H2-TPR and H2-TPD techniques. The catalytic activities of HT-WGS catalysts was demonstrated at 550°C, GHSV of 2x105 mLh-1gcat-1and steam-to-CO ratio of 3. Nickel was detected as a nickel aluminate phase in the calcined catalyst. Ni strongly interacted with support in the calcined catalyst prepared by sol-gel method. The strong metal-support interaction can be resisted by preparing catalyst via impregnation and CeO2 can promote the H2O dissociation in HT-WGS mechanism. The highest metal dispersion, largest metal surface area an...d greatest HT-WGS activity were consequently achieved by Ni/CeO2-Al2O3 prepared from impregnation method.
Кључне речи:
Catalyst Preparation / High Temperature Water-Gas Shift Reaction / Ni⁄CeO2-Al2O3Извор:
Key Engineering Materials, 2017, 757, 171-175
DOI: 10.4028/www.scientific.net/KEM.757.171
ISSN: 1013-9826
Scopus: 2-s2.0-85034025656
Институција/група
Inovacioni centarTY - JOUR AU - Sangsong, S. AU - Srimala, K. AU - Radonjić, Mia AU - Tungkamani, S. AU - Sornchamni, T. AU - Phongaksorn, M. PY - 2017 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6346 AB - High temperature water gas shift (HT-WGS) is an important catalytic process connected with reforming process in hydrogen production. Ni/CeO2-Al2O3 (or Al2O3) catalysts were studied in this work on the effect of catalyst preparation method toward the physicochemical properties and the HT-WGS activity. Ni/CeO2-Al2O3 were prepared by sol-gel and impregnation methods whereas Ni/Al2O3 was prepared by impregnation method. The catalyst samples were characterized by XRD, H2-TPR and H2-TPD techniques. The catalytic activities of HT-WGS catalysts was demonstrated at 550°C, GHSV of 2x105 mLh-1gcat-1and steam-to-CO ratio of 3. Nickel was detected as a nickel aluminate phase in the calcined catalyst. Ni strongly interacted with support in the calcined catalyst prepared by sol-gel method. The strong metal-support interaction can be resisted by preparing catalyst via impregnation and CeO2 can promote the H2O dissociation in HT-WGS mechanism. The highest metal dispersion, largest metal surface area and greatest HT-WGS activity were consequently achieved by Ni/CeO2-Al2O3 prepared from impregnation method. T2 - Key Engineering Materials T1 - The Effect of Preparation Method on Ni/Ce/Al Catalyst for High Temperature Water-Gas Shift Reaction EP - 175 SP - 171 VL - 757 DO - 10.4028/www.scientific.net/KEM.757.171 ER -
@article{ author = "Sangsong, S. and Srimala, K. and Radonjić, Mia and Tungkamani, S. and Sornchamni, T. and Phongaksorn, M.", year = "2017", abstract = "High temperature water gas shift (HT-WGS) is an important catalytic process connected with reforming process in hydrogen production. Ni/CeO2-Al2O3 (or Al2O3) catalysts were studied in this work on the effect of catalyst preparation method toward the physicochemical properties and the HT-WGS activity. Ni/CeO2-Al2O3 were prepared by sol-gel and impregnation methods whereas Ni/Al2O3 was prepared by impregnation method. The catalyst samples were characterized by XRD, H2-TPR and H2-TPD techniques. The catalytic activities of HT-WGS catalysts was demonstrated at 550°C, GHSV of 2x105 mLh-1gcat-1and steam-to-CO ratio of 3. Nickel was detected as a nickel aluminate phase in the calcined catalyst. Ni strongly interacted with support in the calcined catalyst prepared by sol-gel method. The strong metal-support interaction can be resisted by preparing catalyst via impregnation and CeO2 can promote the H2O dissociation in HT-WGS mechanism. The highest metal dispersion, largest metal surface area and greatest HT-WGS activity were consequently achieved by Ni/CeO2-Al2O3 prepared from impregnation method.", journal = "Key Engineering Materials", title = "The Effect of Preparation Method on Ni/Ce/Al Catalyst for High Temperature Water-Gas Shift Reaction", pages = "175-171", volume = "757", doi = "10.4028/www.scientific.net/KEM.757.171" }
Sangsong, S., Srimala, K., Radonjić, M., Tungkamani, S., Sornchamni, T.,& Phongaksorn, M.. (2017). The Effect of Preparation Method on Ni/Ce/Al Catalyst for High Temperature Water-Gas Shift Reaction. in Key Engineering Materials, 757, 171-175. https://doi.org/10.4028/www.scientific.net/KEM.757.171
Sangsong S, Srimala K, Radonjić M, Tungkamani S, Sornchamni T, Phongaksorn M. The Effect of Preparation Method on Ni/Ce/Al Catalyst for High Temperature Water-Gas Shift Reaction. in Key Engineering Materials. 2017;757:171-175. doi:10.4028/www.scientific.net/KEM.757.171 .
Sangsong, S., Srimala, K., Radonjić, Mia, Tungkamani, S., Sornchamni, T., Phongaksorn, M., "The Effect of Preparation Method on Ni/Ce/Al Catalyst for High Temperature Water-Gas Shift Reaction" in Key Engineering Materials, 757 (2017):171-175, https://doi.org/10.4028/www.scientific.net/KEM.757.171 . .