TY - JOUR
T1 - Catalytic steam reforming of propane over Ni/LaAlO 3 catalysts
T2 - Influence of preparation methods and OSC on activity and stability
AU - Harshini, D.
AU - Yoon, Chang Won
AU - Han, Jonghee
AU - Yoon, Sung Pil
AU - Nam, Suk Woo
AU - Lim, Tae Hoon
N1 - Funding Information:
Acknowledgments This study was supported financially by the Seoul R&D program. Part of this research was also supported by the Global Research Laboratory Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology of Korea.
PY - 2012/2
Y1 - 2012/2
N2 - To develop an efficient catalyst for steam reforming of propane, Ni/LaAlO 3 catalysts were prepared by deposition precipitation, impregnation, and solvo-thermal methods, and characterized by XRD, BET, H 2-TPR, elemental analyses, and TEM. Ni/Al 2O 3 and Ni/CeO 2 catalysts were also synthesized by the solvo-thermal method for comparison. The Ni/LaAlO 3 catalysts exhibited better catalytic performance than both Ni/Al 2O 3 and Ni/CeO 2 catalysts, and activities with Ni/LaAlO 3 were found to be dependent upon the preparation methods. In particular, the Ni/LaAlO 3 catalyst synthesized by the solvo-thermal method exhibited the highest activity presumably because tetrahydrofuran helps distribute generated Ni nanoparticles onto the catalyst surface in a uniform fashion. In addition, the solvo-thermally prepared Ni/LaAlO 3 catalyst was found to be highly stable, with its activity being maintained at least during 100 h. The observed high stability is attributed to the excellent oxygen storage capacity of LaAlO 3, which was first determined by thermogravimetric methods as well as by soot oxidations in the presence of Al 2O 3, CeO 2, and LaAlO 3. Compared to the Ni/Al 2O 3 and Ni/CeO 2 catalysts, Ni/LaAlO 3 exhibited suppressed carbon formation even at lower S/C ratios due to the superior oxygen transport ability of the LaAlO 3 support. Graphical Abstract: [Figure not available: see fulltext.]
AB - To develop an efficient catalyst for steam reforming of propane, Ni/LaAlO 3 catalysts were prepared by deposition precipitation, impregnation, and solvo-thermal methods, and characterized by XRD, BET, H 2-TPR, elemental analyses, and TEM. Ni/Al 2O 3 and Ni/CeO 2 catalysts were also synthesized by the solvo-thermal method for comparison. The Ni/LaAlO 3 catalysts exhibited better catalytic performance than both Ni/Al 2O 3 and Ni/CeO 2 catalysts, and activities with Ni/LaAlO 3 were found to be dependent upon the preparation methods. In particular, the Ni/LaAlO 3 catalyst synthesized by the solvo-thermal method exhibited the highest activity presumably because tetrahydrofuran helps distribute generated Ni nanoparticles onto the catalyst surface in a uniform fashion. In addition, the solvo-thermally prepared Ni/LaAlO 3 catalyst was found to be highly stable, with its activity being maintained at least during 100 h. The observed high stability is attributed to the excellent oxygen storage capacity of LaAlO 3, which was first determined by thermogravimetric methods as well as by soot oxidations in the presence of Al 2O 3, CeO 2, and LaAlO 3. Compared to the Ni/Al 2O 3 and Ni/CeO 2 catalysts, Ni/LaAlO 3 exhibited suppressed carbon formation even at lower S/C ratios due to the superior oxygen transport ability of the LaAlO 3 support. Graphical Abstract: [Figure not available: see fulltext.]
KW - Ni/LaAlO catalysts
KW - Oxygen storage capacity
KW - Solvo-thermal method
KW - Soot oxidation
KW - Steam reforming of propane
UR - http://www.scopus.com/inward/record.url?scp=84856595514&partnerID=8YFLogxK
U2 - 10.1007/s10562-011-0746-4
DO - 10.1007/s10562-011-0746-4
M3 - Article
AN - SCOPUS:84856595514
SN - 1011-372X
VL - 142
SP - 205
EP - 212
JO - Catalysis Letters
JF - Catalysis Letters
IS - 2
ER -