Partial oxidation of propane over Ru promoted Ni/Mg(Al)O catalysts : Self-activation and prominent effect of reduction-oxidation treatment of the catalyst
作者： Dalin Li , Masato Shiraga , Ikuo Atake , Tetsuya Shishido , Yasunori Oumi
DOI: 10.1016/J.APCATA.2007.01.043
关键词:
摘要: Abstract Ru (0.1–0.5 wt%) loaded Ni/Mg(Al)O catalysts have been prepared by adopting the “memory effect,” i.e., reconstitution of Mg(Ni)–Al hydrotalcite from Mg(Ni, Al)O periclase after heat-treatment, and their catalytic activities tested in partial oxidation propane. The Ru–Ni0.5/Mg2.5(Al)O were dipping Mg2.5(Al,Ni0.5)O derived Mg2.5(Ni0.5)–Al an aqueous solution Ru(III) nitrate. took place effect” was simultaneously accompanied incorporation layer, leading to formation active Ni–Ru bimetal catalyst calcination followed reduction. Upon O2 purging at 700 °C during propane 600 °C, showed no deactivation, while Ni0.5/Mg2.5(Al)O totally deactivated Ni oxidation. Moreover, self-activated under reaction conditions without reduction pre-treatment with H2. activity enhanced increasing loading reduction–oxidation pretreatment. After treatment, two types peak observed TPR catalysts: 1st around 550 °C weakened, whereas 2nd 750 °C enhanced, loading. is assigned non-active Ni2+ ions having square-pyramidal coordination outermost layer Mg(Al)O structure, probably bimetallic species composed finely dispersed metal particles combined Ru.
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Tetsuya Shishido, Masanori Sukenobu, Hiroyuki Morioka, Rie Furukawa, Hiroshi Shirahase, Katsuomi Takehira, CO2 reforming of CH4 over Ni/Mg–Al oxide catalysts prepared by solid phase crystallization method from Mg–Al hydrotalcite-like precursors Catalysis Letters. ,vol. 73, pp. 21- 26 ,(2001) , 10.1023/A:1009066017469
Ahmet K Avcı, David L Trimm, A Erhan Aksoylu, Z İlsen Önsan, Ignition Characteristics of Pt, Ni and Pt-Ni Catalysts Used for Autothermal Fuel Processing Catalysis Letters. ,vol. 88, pp. 17- 22 ,(2003) , 10.1023/A:1023574530390
Jun Wang, Lin Dong, Yuhai Hu, Guishan Zheng, Zheng Hu, Yi Chen, Dispersion of NiO Supported on γ-Al2O3 and TiO2/γ-Al2O3 Supports Journal of Solid State Chemistry. ,vol. 157, pp. 274- 282 ,(2001) , 10.1006/JSSC.2000.9050
Ahmet K Avcı, David L Trimm, A Erhan Aksoylu, Z Ilsen Önsan, Hydrogen production by steam reforming of n-butane over supported Ni and Pt-Ni catalysts Applied Catalysis A-general. ,vol. 258, pp. 235- 240 ,(2004) , 10.1016/J.APCATA.2003.09.016
S. Ayabe, H. Omoto, T. Utaka, R. Kikuchi, K. Sasaki, Y. Teraoka, K. Eguchi, Catalytic autothermal reforming of methane and propane over supported metal catalysts Applied Catalysis A-general. ,vol. 241, pp. 261- 269 ,(2003) , 10.1016/S0926-860X(02)00471-4
A OLAFSEN, A SLAGTERN, I DAHL, U OLSBYE, Y SCHUURMAN, C MIRODATOS, Mechanistic features for propane reforming by carbon dioxide over a Ni/Mg(Al)O hydrotalcite-derived catalyst Journal of Catalysis. ,vol. 229, pp. 163- 175 ,(2005) , 10.1016/J.JCAT.2004.10.002
A.S. Bodke, S.S. Bharadwaj, L.D. Schmidt, The Effect of Ceramic Supports on Partial Oxidation of Hydrocarbons over Noble Metal Coated Monoliths Journal of Catalysis. ,vol. 179, pp. 138- 149 ,(1998) , 10.1006/JCAT.1998.2224
Masato Shiraga, Dalin Li, Ikuo Atake, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira, Partial oxidation of propane to synthesis gas over noble metals-promoted Ni/Mg(Al)O catalysts - High activity of Ru-Ni/Mg(Al)O catalyst Applied Catalysis A-general. ,vol. 318, pp. 143- 154 ,(2007) , 10.1016/J.APCATA.2006.10.049
Andrey I. Tsyganok, Mieko Inaba, Tatsuo Tsunoda, Kunio Uchida, Kunio Suzuki, Katsuomi Takehira, Takashi Hayakawa, Rational design of Mg–Al mixed oxide-supported bimetallic catalysts for dry reforming of methane Applied Catalysis A-general. ,vol. 292, pp. 328- 343 ,(2005) , 10.1016/J.APCATA.2005.06.007
Shenglin Liu, Longya Xu, Sujuan Xie, Qingxia Wang, Guoxing Xiong, Partial oxidation of propane to syngas over nickel supported catalysts modified by alkali metal oxides and rare-earth metal oxides Applied Catalysis A-general. ,vol. 211, pp. 145- 152 ,(2001) , 10.1016/S0926-860X(00)00865-6