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Acidic catalysts for the dehydration of glycerol Activity and deactivation外文翻译.pdf

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Journal of Molecular Catalysis A: Chemical 309 (2009) 71–78 Contents lists available at ScienceDirect Journal of Molecular Catalysis A: Chemical j o u rn al h omepage: w w w. elsev /locate/molc ata Acidic catalysts for the dehydration of glycerol: Activity and deactivation Wladimir Suprun ∗ , Michal Lutecki, Thomas Haber, Helmut Papp Institute of Industrial Chemistry, University of Leipzig, Linnéstraße 3, D-04103 Leipzig, Germany a r t i c l e i n f o a b s t r a c t Article history: Al O and TiO supports modiﬁed by impregnation with PO -ions and SAPO-11 and SAPO-34 samples 2 3 2 4 Received 30 March 2009 were synthesized and characterized by physico-chemical methods. The acidic properties of these catalysts Received in revised form 22 April 2009 were determined by ammonia TPD. The gas-phase dehydration of glycerol in presence of water was Accepted 23 April 2009 ◦ investigated at 280 C. Glycerol conversion and acrolein selectivity depended on the total acidity and on Available online 3 May 2009 the textural properties. Additionally, the formation of by-products during the dehydration of glycerol and the conversion of 1-hydroxyacetone and 3-hydroxypropionaldehyde catalysts was studied. The SAPO Keywords: