Characterization of Nanosized SrTiO3 Catalyst for Oxidative Coupling of Methane by in Situ ESR and TPSR

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (12): 1277-1282.

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Characterization of Nanosized SrTiO3 Catalyst for Oxidative Coupling of Methane by in Situ ESR and TPSR

MIAO Jianwen1,3*, SONG Guohua2, FAN Yining3, ZHOU Jing3

1 School of Chemistry and Chemical Engineering, Nantong University, Nantong 226001, Jiangsu, China; 2 School of Science, Nantong University, Nantong 226001, Jiangsu, China; 3 School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, Jiangsu, China

Received:2008-12-25 Online:2008-12-25 Published:2012-09-20

Abstract

Abstract: The catalytic performance of nanosized SrTiO3 (n(Sr)/n(Ti)=1.2) a nd conventional SrTiO3 (n(Sr)/n(Ti)=1.2) for OCM reaction was mea sured. The nanosized SrTiO3 catalyst exhibited better catalytic activity at l ow temperature (～650 ℃) than the conventional SrTiO3 catalyst with the sam e composition. The catalytic performance of the nanosized SrTiO3 catalyst was correlated to the higher concentration of F centers owing to low coordination nu mbers on the nanosized oxide particles.

Key words: methane, oxidative coupling, strontium titanate, nanocatalyst, electron spin resonance, F center, temperature-programmed surface reaction

MIAO Jianwen;*;SONG Guohua;FAN Yining;ZHOU Jing. Characterization of Nanosized SrTiO3 Catalyst for Oxidative Coupling of Methane by in Situ ESR and TPSR[J]. Chinese Journal of Catalysis, 2008, 29(12): 1277-1282.

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Characterization of Nanosized SrTiO3 Catalyst for Oxidative Coupling of Methane by in Situ ESR and TPSR

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