Preparation and characterization of La1−xKxFeO3 (x = 0–1) by self-propagating high-temperature synthesis for use as soot combustion catalyst
作者： Keita Taniguchi , Noriyuki Okinaka , Tomohiro Akiyama
DOI: 10.1016/J.JALLCOM.2010.04.147
关键词:
摘要: Abstract This paper proposes La1−xKxFeO3 prepared by self-propagating high-temperature synthesis (SHS) as an alternative to platinum catalysts for promoting diesel soot combustion. The catalytic property of eleven products SHSed with different substitution ratios potassium (x = 0–1) was experimentally evaluated using a thermobalance. In the mass loss curves product, T50 defined temperature at which weight reference decreases half its initial weight. BET specific surface area depended on x strongly. All showed good oxidation activity. Despite having smallest (0.11 m2/g) among obtained products, La0.9K0.1FeO3 (x = 0.1) found be best catalyst lowest (442 °C). decreased increasing x > 0.2. x = 0.6 and 0.8 were second-best in terms their T50. Moreover, average apparent activation energy calculated Friedman method TG much 61 kJ/mol lower than that Pt/Al2O3 catalyst. conclusion, potassium-substituted can used
elsevier.com
sci-hub.se 参考文章(21)
Hongmei An, Caitlin Kilroy, Paul J. McGinn, Combinatorial synthesis and characterization of alkali metal doped oxides for diesel soot combustion Catalysis Today. ,vol. 98, pp. 423- 429 ,(2004) , 10.1016/J.CATTOD.2004.08.006
Yanping Wang, Junwu Zhu, Lili Zhang, Xujie Yang, Lude Lu, Xin Wang, Preparation and characterization of perovskite LaFeO3 nanocrystals Materials Letters. ,vol. 60, pp. 1767- 1770 ,(2006) , 10.1016/J.MATLET.2005.12.015
Yasutake Teraoka, Koji Nakano, Wenfeng Shangguan, Shuichi Kagawa, Simultaneous catalytic removal of nitrogen oxides and diesel soot particulate over perovskite-related oxides. Catalysis Today. ,vol. 27, pp. 107- 113 ,(1996) , 10.1016/0920-5861(95)00177-8
Nunzio Russo, Stefania Furfori, Debora Fino, Guido Saracco, Vito Specchia, Lanthanum cobaltite catalysts for diesel soot combustion Applied Catalysis B-environmental. ,vol. 83, pp. 85- 95 ,(2008) , 10.1016/J.APCATB.2008.02.006
John PA Neeft, T Xander Nijhuis, Erik Smakman, Michiel Makkee, Jacob A Moulijn, Kinetics of the oxidation of diesel soot Fuel. ,vol. 76, pp. 1129- 1136 ,(1997) , 10.1016/S0016-2361(97)00119-1
Luca Marchetti, Lucio Forni, Catalytic combustion of methane over perovskites Applied Catalysis B-environmental. ,vol. 15, pp. 179- 187 ,(1998) , 10.1016/S0926-3373(97)00045-3
V KROGER, U LASSI, K KYNKAANNIEMI, A SUOPANKI, R KEISKI, Methodology development for laboratory-scale exhaust gas catalyst studies on phosphorus poisoning Chemical Engineering Journal. ,vol. 120, pp. 113- 118 ,(2006) , 10.1016/J.CEJ.2006.03.012
Songling Huang, Xugao Cui, Dunhui Wang, Zhida Han, Youwei Du, Magnetic entropy change and magnetotransport in Gd doped La–Sr–Mn–O perovskite Journal of Alloys and Compounds. ,vol. 398, pp. 184- 187 ,(2005) , 10.1016/J.JALLCOM.2005.02.005
Arvind Varma, Jean-Pascal Lebrat, Combustion synthesis of advanced materials Chemical Engineering Science. ,vol. 47, pp. 2179- 2194 ,(1992) , 10.1016/0009-2509(92)87034-N
Tomohiro Akiyama, Yoshihisa Hirai, Nobuyuki Ishikawa, Combustion Synthesis of Aluminum Nitride From Dross Materials Transactions. ,vol. 42, pp. 460- 463 ,(2001) , 10.2320/MATERTRANS.42.460