Chemoselective crotonaldehyde hydrogen transfer reduction over pure and supported metal nitrates
作者： Juan F. Miñambres , Alberto Marinas , José M. Marinas , Francisco J. Urbano
DOI: 10.1016/J.JCAT.2012.08.013
关键词:
摘要: Abstract A series of catalysts based on calcined aluminium, gallium, indium and zirconyl nitrates was synthesised. Gallium nitrate were also supported (impregnation method) over ZrO 2 TiO . The whole set characterised tested for the gas-phase chemoselective reduction crotonaldehyde by hydrogen transfer from 2-propanol (Meerwein–Ponndorf–Verley process, MPV). Catalyst characterisation revealed that consisted metal oxides with residual as evidenced FT-Raman XPS measurements. Those systems showed high-strength acid sites (as determined pyridine TPD). relationship between high strength Bronsted plus Lewis acidity yield to 2-butenol found all systems, being solid leading better catalytic results. Pyridine poisoning experiments confirmed role strong in MPV crotonaldehyde. However, presented a severe deactivation process seemed consist both irreversible reversible processes since reactivation cycles only led partially recovered activity. adsorption polymeric species formed accounts process.
els-cdn.com参考文章(36)
J.C. van der Waal, E.J. Creyghton, P.J. Kunkeler, K. Tan, H. van Bekkum, Beta–type zeolites as selective and regenerable catalysts in the Meerwein–Ponndorf–Verley reduction of carbonyl compounds Topics in Catalysis. ,vol. 4, pp. 261- 268 ,(1997) , 10.1023/A:1019160827175
Johannes Panten, Horst Surburg, Common Fragrance and Flavor Materials: Preparation, Properties and Uses ,(1997)
Yongzhong Zhu, Shuhua Liu, Stephan Jaenicke, Gaikhuan Chuah, Zirconia catalysts in Meerwein-Ponndorf-Verley reduction of citral Catalysis Today. ,vol. 97, pp. 249- 255 ,(2004) , 10.1016/J.CATTOD.2004.07.002
Calvin H Bartholomew, Mechanisms of catalyst deactivation Applied Catalysis A-general. ,vol. 212, pp. 17- 60 ,(2001) , 10.1016/S0926-860X(00)00843-7
Marı́a A Aramendı́a, Victoriano Borau, César Jiménez, José M Marinas, José R Ruiz, Francisco J Urbano, None, Influence of the preparation method on the structural and surface properties of various magnesium oxides and their catalytic activity in the Meerwein–Ponndorf–Verley reaction Applied Catalysis A-general. ,vol. 244, pp. 207- 215 ,(2003) , 10.1016/S0926-860X(02)00213-2
Manishwar Singh, Nanjia Zhou, Dilip K. Paul, Kenneth J. Klabunde, IR spectral evidence of aldol condensation : Acetaldehyde adsorption over TiO2 surface Journal of Catalysis. ,vol. 260, pp. 371- 379 ,(2008) , 10.1016/J.JCAT.2008.07.020
S.H. Liu, S. Jaenicke, G.K. Chuah, Hydrous Zirconia as a Selective Catalyst for the Meerwein–Ponndorf–Verley Reduction of Cinnamaldehyde Journal of Catalysis. ,vol. 206, pp. 321- 330 ,(2002) , 10.1006/JCAT.2001.3480
J Lopez, J Sanchez Valente, J-M Clacens, F Figueras, None, Hydrogen Transfer Reduction of 4-tert-Butylcyclohexanone and Aldol Condensation of Benzaldehyde with Acetophenone on Basic Solids Journal of Catalysis. ,vol. 208, pp. 30- 37 ,(2002) , 10.1006/JCAT.2002.3563
Francisco J. Urbano, María A. Aramendía, Alberto Marinas, José M. Marinas, An insight into the Meerwein–Ponndorf–Verley reduction of α,β-unsaturated carbonyl compounds: Tuning the acid–base properties of modified zirconia catalysts Journal of Catalysis. ,vol. 268, pp. 79- 88 ,(2009) , 10.1016/J.JCAT.2009.09.005
Stephen Brunauer, P. H. Emmett, Edward Teller, Adsorption of Gases in Multimolecular Layers Journal of the American Chemical Society. ,vol. 60, pp. 309- 319 ,(1938) , 10.1021/JA01269A023