Synthesis of vanadium-containing Ti-MCM-41 silicates and their catalytic properties in propane dehydrogenation
Keywords:
MCM-41 mesoporous silicates, hydrothermal synthesis, vanadium, titanium, dehydrogenation, propane, propyleneAbstract
Ti-MCM-41 silicate with vanadium introduced in mesoporous structure has been obtained by hydrothermal template synthesis with participation of VOSO4 and pyrogenic titanoaerosil with 1.4 wt. % tetrahedrally coordinated titanium. By the X-ray diffraction, X-ray fluorescent spectroscopy, DR UV-vis analysis and adsorption of nitrogen it has been shown that even 0.3 wt. % V causes raising spatial order and hydrolytic stability of Ti-MCM-41. It has been found that additional supporting of VOx groups on a surface of the synthesized bimetallic silicate allowed to obtain the catalyst 5%VOx/V, Ti-MCM-41 which due to dehydrogenation of propane generated propylene with bigger selectivity and yield than those when VOx was supported on MCM-41 and Ti-MCM-41.References
1. Corma A. From microporous to mesoporous molecular sieve materials and their use in catalysis // Chem. Rev. – 1997. – V. 97. – P. 2373–2419.
2. Karakoulia S.A., Triantafyllidis K.S., Tsilomelekis G. et al. Propane oxidative dehydrogenation over vanadia catalysts supported on mesoporous silicas with varying pore structure and size // Catal. Today. – 2009. – V. 141. – P. 245–253.
3. Макарян И.А., Рудакова М.И., Савченко В.И. Промышленные процессы целевого каталитического дегидрирования пропана в пропилен // Альтернативная энергетика и экология. – 2010. – Т. 86, № 6. – С. 67–81.
4. Sokolov S., Stoyanova M., Rodemerck U. et al. Comparative study of propane dehydro-genation over V-, Cr-, and Pt-based catalysts: Time on-stream behavior and origins of deactivation // J. Catal. – 2012. – V. 293. – P. 67–75.
5. Халдеева О.А., Трухан Н.Н. Мезопористые титан-силикаты как катализаторы процессов жидкофазного селективного окисления органических соединений // Успехи химии. – 2005. – Т. 75, № 5. – С. 460–483.
6. Eimer G.A., Chanquia C.M., Sapag K., Herrero E.R. The role of different parameters of synthesis in the final structure of Ti-containing mesoporous materials // Micropor. Mesopor. Mater. – 2008. – V. 116. – P. 670–676.
7. Selvam P., Dapurkar S.E. The effect of vanadium sources on the synthesis and catalytic activity of VMCM-41 // J. Catal. – 2005. – V. 229. – P. 64–71.
8. Shylesh S., Singh A.P. Vanadium-containing ordered mesoporous silicates: Does the silica source really affect the catalytic activity, structural stability, and nature of vanadium sites in V-MCM-41? // J. Catal. – 2005. – V. 233. – P. 359–371.
9. Parvulescu V., Anastasescu C., Constantin C., Su B.L. Mono (V, Nb) or bimetallic (V–Ti, Nb–Ti) ions modified MCM-41 catalysts: synthesis, characterization and catalysis in oxidation of hydrocarbons (aromatics and alcohols) // Catal. Today. – 2003. – V. 78. – P. 477–485.
10. Pena M.L, Dejoz A., Fornes V. et al. V-containing MCM-41 and MCM-48 catalysts for the selective oxidation of propane in gas phase // Appl. Catal. A. – 2001. – V. 209. – P. 155–164.
11. Ovsitser O., Cherian M., Brückner A., Kondratenko E.V. Dynamics of redox behavior of nano-sized VOxspecies over Ti–Si-MCM-41 from time-resolved in situ UV/Vis analysis // J. Catal. – 2009. – V. 265. – P. 8–18.
12. Редькина А.В., Коновалова Н.Д., Хоменко К.Н., Оранская Е.И. Синтез из титанаэросила мезопористых систем TiO2-SiO2 с нанесен-ным V2O5, их физико-химические и каталитические свойства. II. Получение катализатора VxOy/Н-Ti-MCM-41 и его свойства в процессе дегидрирования пропа-на в пропилен // Катализ и нефтехимия. – 2012. – № 21. – С. 11–22.
13. Galacho C., Ribeiro Carrott M.M.L., Carrott P.J.M. Evaluation of the thermal and mechanical stability of Si-MCM-41 and Ti-MCM-41 synthesised at room temperature // Micropor. Mesopor. Mater. – 2008. – V. 108. – P. 283–293.
14. Laha S.C., Kumar R. Promoter-induced synthesis of MCM-41 type mesoporous materials including Ti- and V-MCM-41 and their catalytic properties in oxidation reactions // Micropor. Mesopor. Mater. – 2002. – V. 53. – P. 163–177.
15. Ferdov S., Lin Z., Sa Ferreira R.A. Incorpo-ration of mixed valence vanadium in the microporous titanosilicate AM-2 // Micropor. Mesopor. Mater. – 2006. – V. 96. – P. 363–368.
16. Bettahar M.M., Costentin G., Savary L., Lavalley J.C. On the partial oxidation of propane and propylene on mixed metal oxide catalysts // Appl. Catal. A. – 1996. – V. 145. – P. 1–48.
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