Reaction engineering investigations of the heterogeneously catalyzed partial oxidation of o-xylene in the explosion regime using a microfixed bed reactor
Reaction engineering investigations of the heterogeneously catalyzed partial oxidation of o-xylene in the explosion regime using a microfixed bed reactor
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使用微型固定床反应器爆炸状态下非均相催化邻二甲苯部分氧化的反应工程研究
DOI:
10.1016/j.ces.2011.10.072
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发表时间:
2012
影响因子:
4.7
通讯作者:
E. Klemm
中科院分区:
文献类型:
--
作者:
T. Lange;S. Heinrich;C. Liebner;H. Hieronymus;E. Klemm
The heterogeneously catalyzed selective gas phase oxidation of o-xylene was investigated, using a microstructured fixed bed reactor, inside of the explosion regime. The reaction was carried out with high amounts of o-xylene in air and stoichiometric with oxygen using a V2O5/TiO2-catalyst prepared through grafting. There were no significant losses in the selectivity to phthalic anhydride observable, during the measurements in the explosion regime, with feed compositions of up to 7vol% o-xylene. Also the space-time yield was up to 2.3 times higher in comparison to conventional reaction conditions. An increase of the selectivity to total oxidation products was observed at higher o-xylene concentrations between 10 and 25vol% o-xylene, which possibly was caused by the formation of a hotspot. The investigation of the used catalyst revealed a thermally induced deactivation due to phase transition of anatase into rutil and formation of crystalline vanadium oxide. Despite that expected hotspot at high o-xylene concentrations, there was no ignition or explosion of the gas mixture observable.
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DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
A. Kursawe;D. Hönicke
通讯作者:
D. Hönicke
DOI:
--
发表时间:
1994
期刊:
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G. Froment
DOI:
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1990
期刊:
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作者:
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影响因子:
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E. Klemm;Enrico Dietzsch;T. Schwarz;T. Kruppa;A. D. Oliveira;Frank Becker;G. Markowz;S. Schirrmeister;R. Schuette;K. J. Caspary;F. Schüth;D. Hönicke
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
C. Rodella;R. W. Franco;C. Magon;J. Donoso;L. Nunes;M. Saeki;M. Aegerter;A. O. Florentino
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A. O. Florentino