Deactivation of MgyAlOx mixed oxides during aldol condensation reactions of ketones

作者: V.K. Díez , C.R. Apesteguía , J.I. Di Cosimo

DOI: 10.1016/S0167-2991(01)80211-1

关键词: Carbon depositionCokeOrganic chemistryAcetoneAldol condensationChemistry

摘要: Abstract The deactivation of Mg-Al mixed oxides during the gas-phase self-condensation acetone was studied. Main aldol condensation reaction and secondary coke-forming reactions take place on both basic acidic sites. Although is caused by carbon deposition, it found that coke formed sites rather than responsible for activity lost.

参考文章(10)
Sigrid Lippert, Werner Baumann, Kurt Thomke, Secondary reactions of the base-catalyzed aldol condensation of acetone Journal of Molecular Catalysis. ,vol. 69, pp. 199- 214 ,(1991) , 10.1016/0304-5102(91)80145-S
J.I. Di Cosimo, V.K. Dı́ez, C.R. Apesteguı́a, Synthesis of α,β-unsaturated ketones over thermally activated Mg–Al hydrotalcites Applied Clay Science. ,vol. 13, pp. 433- 449 ,(1998) , 10.1016/S0169-1317(98)00037-4
J.I. Di Cosimo, C.R. Apesteguı&́a, M.J.L. Ginés, E. Iglesia, Structural requirements and reaction pathways in condensation reactions of alcohols on MgyAlOx catalysts Journal of Catalysis. ,vol. 190, pp. 261- 275 ,(2000) , 10.1006/JCAT.1999.2734
G.S. Salvapati, K.V. Ramanamurty, Mulpuri Janardanarao, Selective catalytic self-condensation of acetone Journal of Molecular Catalysis. ,vol. 54, pp. 9- 30 ,(1989) , 10.1016/0304-5102(89)80134-8
J.I. Di Cosimo, V.K. Díez, C.R. Apesteguía, Base catalysis for the synthesis of α,β-unsaturated ketones from the vapor-phase aldol condensation of acetone Applied Catalysis A-general. ,vol. 137, pp. 149- 166 ,(1996) , 10.1016/0926-860X(95)00289-8
Juana I Di Cosimo, Carlos R Apesteguı́a, Study of the catalyst deactivation in the base-catalyzed oligomerization of acetone Journal of Molecular Catalysis A-chemical. ,vol. 130, pp. 177- 185 ,(1998) , 10.1016/S1381-1169(97)00204-5