Steady State Isotopic Transient Kinetic Analysis of the acrolein oxidation on Mo–V–W-mixed oxide catalysts
作者： A. Drochner , P. Kampe , J. Kunert , J. Ott , H. Vogel
DOI: 10.1016/J.APCATA.2005.04.015
关键词:
摘要: Abstract Mixed oxide catalysts on the basis of molybdenum and vanadium are industrially important for partial oxidation acrolein to acrylic acid. For a better understanding oxygen pathways an optimised model catalyst with stoichiometric composition Mo 7.5 V 2.5 W 0.5 O x , so-called Steady State Isotopic Transient Kinetic Analysis (SSITKA) method was employed. After switching from 16 2 18 formation O-labelled observed. Acrolein exchanges its carbonyl solid catalyst. This exchange is also reflected in isotopic distribution products (acrylic acid combustion products). Subsequent desorption acrolein, as well further reaction products, can take place. Compared incorporation tracer into by-products much slower. might be indicator intermediate layer pathway. To obtain activation parameters SSITKA experiments were performed over temperature range between 322 391 °C. Based observations, macro kinetic adapted upon. The energy found approximately 30 kJ mol −1 .
tu-darmstadt.de
elsevier.com
sci-hub.se 参考文章(14)
H. Werner, O. Timpe, D. Herein, Y. Uchida, N. Pfänder, U. Wild, R. Schlögl, H. Hibst, Relevance of a glassy nanocrystalline state of Mo4VO14 for its action as selective oxidation catalyst Catalysis Letters. ,vol. 44, pp. 153- 163 ,(1997) , 10.1023/A:1018901830923
Kai Krauß, Alfons Drochner, Michael Fehlings, Jan Kunert, Herbert Vogel, Oxygen exchange at Mo/V mixed oxides: A transient and 18O isotope study under technical conditions Journal of Molecular Catalysis A-chemical. ,vol. 177, pp. 237- 245 ,(2002) , 10.1016/S1381-1169(01)00237-0
David Linke, Dorit Wolf, Manfred Baerns, Olaf Timpe, Robert Schlögl, Sabine Zeyβ, Uwe Dingerdissen, Catalytic partial oxidation of ethane to acetic acid over Mo1V0.25Nb0.12Pd0.0005Ox. I. Catalyst performance and reaction mechanism Journal of Catalysis. ,vol. 205, pp. 16- 31 ,(2002) , 10.1006/JCAT.2001.3367
Jan Kunert, Alfons Drochner, Jörg Ott, Herbert Vogel, Hartmut Fueß, Synthesis of Mo/V mixed oxide catalysts via crystallisation and spray drying—a novel approach for controlled preparation of acrolein to acrylic acid catalysts Applied Catalysis A-general. ,vol. 269, pp. 53- 61 ,(2004) , 10.1016/J.APCATA.2004.03.050
Andreas H Adams, Frank Haaß, Thorsten Buhrmester, Jan Kunert, Jörg Ott, Herbert Vogel, Hartmut Fuess, Structure and reaction studies on vanadium molybdenum mixed oxides Journal of Molecular Catalysis A: Chemical. ,vol. 216, pp. 67- 74 ,(2004) , 10.1016/J.MOLCATA.2004.02.005
Frank Haaß, Andreas H. Adams, Thorsten Buhrmester, Guido Schimanke, Manfred Martin, Hartmut Fuess, X-Ray absorption and X-ray diffraction studies on molybdenum doped vanadium pentoxide Physical Chemistry Chemical Physics. ,vol. 5, pp. 4317- 4324 ,(2003) , 10.1039/B307158H
P. Biloen, Transient kinetic methods Journal of Molecular Catalysis. ,vol. 21, pp. 17- 24 ,(1983) , 10.1016/0304-5102(93)80108-7
W UEDA, Catalytic properties of tricomponent metal oxides having the scheelite structure: II. Structural stability in the reduction-oxidation cycle Journal of Catalysis. ,vol. 101, pp. 369- 375 ,(1986) , 10.1016/0021-9517(86)90264-2
Wataru Ueda, Yoshihiko Moro-Oka, Tsuneo Ikawa, 18 O tracer study of the active species of oxygen on Bi2MoO6 catalyst Journal of the Chemical Society, Faraday Transactions. ,vol. 78, pp. 495- 500 ,(1982) , 10.1039/F19827800495
J. Happel, STUDY OF KINETIC STRUCTURE USING MARKED ATOMS Catalysis Reviews. ,vol. 6, pp. 221- 260 ,(1972) , 10.1080/01614947208078694