Preparation and characterization of three pure magnesium vanadate phases as catalysts for selective oxidation of propane to propene
作者： Xingtao Gao , P. Ruiz , Qin Xin , Xiexian Guo , B. Delmon
DOI: 10.1007/BF00811367
关键词:
摘要: Three magnesium vanadate phases, i.e., MgV2O6 (metavanadate), α-Mg2V2O7 (pyrovana-date) and Mgs V2O8 (orthovanadate), have been successfully prepared with high purity by the citrate method at a relatively low temperature (550°C). FT-IR, LRS, XRD SEM techniques used to characterize these phases. The effect of calcination has also investigated. It was found that particle size morphology phase, which is function temperature, appear strong on infrared spectra. Furthermore, catalytic properties three phases were examined in oxidative dehydrogenation propane. propene selectivity follows order: > Mg3 Vg2O8 MgV2O6, consistent their redox properties. This fact suggests there some correlation between
springer.com
sci-hub.se 参考文章(11)
MA Chaar, D Patel, MC Kung, HH Kung, Selective oxidative dehydrogenation of butane over VMgO catalysts Journal of Catalysis. ,vol. 105, pp. 483- 498 ,(1987) , 10.1016/0021-9517(87)90076-5
R. Gopal, C. Calvo, Crystal structure of magnesium divanadate, Mg2V2O7 Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. ,vol. 30, pp. 2491- 2493 ,(1974) , 10.1107/S0567740874007400
M. Ocaña, V. Fornés, J.V.García Ramos, C.J. Serna, Factors affecting the infrared and Raman spectra of rutile powders Journal of Solid State Chemistry. ,vol. 75, pp. 364- 372 ,(1988) , 10.1016/0022-4596(88)90176-4
G.M. Clark, R. Morley, A study of the MgOV2O5 system Journal of Solid State Chemistry. ,vol. 16, pp. 429- 435 ,(1976) , 10.1016/0022-4596(76)90060-8
Franklin D. Hardcastle, Israel E. Wachs, Determination of vanadium-oxygen bond distances and bond orders by Raman spectroscopy The Journal of Physical Chemistry. ,vol. 95, pp. 5031- 5041 ,(1991) , 10.1021/J100166A025
Ph. Courty, H. Ajot, Ch. Marcilly, B. Delmon, Oxydes mixtes ou en solution solide sous forme très divisée obtenus par décomposition thermique de précurseurs amorphes Powder Technology. ,vol. 7, pp. 21- 38 ,(1973) , 10.1016/0032-5910(73)80005-1
D. Siew Hew Sam, V. Soenen, J.C. Volta, Oxidative dehydrogenation of propane over VMgO catalysts Journal of Catalysis. ,vol. 123, pp. 417- 435 ,(1990) , 10.1016/0021-9517(90)90139-B
Mayfair C. Kung, Harold H. Kung, The effect of potassium in the preparation of magnesium orthovanadate and pyrovanadate on the oxidative dehydrogenation of propane and butane Journal of Catalysis. ,vol. 134, pp. 668- 677 ,(1992) , 10.1016/0021-9517(92)90351-H
J. Hanuza, B. Jeżowska-Trzebiatowska, W. Oganowski, Structure of the active layer and catalytic mechanism of the V2O5/MgO catalysts in the oxidative dehydrogenation of ethylbenzene to styrene Journal of Molecular Catalysis. ,vol. 29, pp. 109- 143 ,(1985) , 10.1016/0304-5102(85)85135-X
H. H. Kung, D. Patel, M. A. Chaar, Selective oxidative dehydrogenation of propane over V-Mg-O catalysts Journal of Catalysis. ,vol. 109, pp. 463- 467 ,(1988)