Zeolite/sintered metal fibers composites as effective structured catalysts
The catalytic filters of sintered metal fibers (SMF) coated by thin MFI-type zeolite (silicalite-1, ZSM-5) films have been synthesized and tested in the reactor with structured catalytic bed. The catalysts show multifunctional behavior, combining catalysis with heat exchange, mixing, and particulates removal. The reactors based on the zeolite/SMF composite elements have a three-level structure: (i) a micro-scale due to oriented submicron zeolite crystals; (ii) a meso-scale due to homogeneous porosity of metal fiber filters; (iii) a macro-scale due to the design characteristics of the catalyst packing. The catalytic bed of the FeZSM-5/SMFFecralloy was efficient and the one-step benzene hydroxylation to phenol with N2O at temperatures as low as 270 °C without loosing N2O via decomposition to nitrogen and oxygen (selectivity close to 100%). The catalyst was effective in the N2O decomposition at temperatures 400–500 °C.
Keywords: Metallic fibers Role: CAT (Catalyst use) ; USES (Uses) (iron alloy ; Bekipor ST 20AL3; zeolite/sintered metal fibers composites as effective structured catalysts); Zeolite ZSM-5 Role: CAT (Catalyst use) ; SPN (Synthetic preparation) ; PREP (Preparation) ; US ; silicalite ZSM5 zeolite catalyst hydroxylation benzene phenol manuf
[u'CAN 142:394102', u'45-4', u'Industrial Organic Chemicals, Leather, Fats, and Waxes', u'Laboratory of Chemical Reaction Engineering, LGRC-EPFL,Swiss Federal Institute of Technology,Lausanne,Switz.', u'Journal', u'0926-860X', u'written in English.', u'108-95-2P (Phenol) Role: IMF (Industrial manufacture), PREP (Preparation) (zeolite/sintered metal fibers composites as effective structured catalysts); 71-43-2 (Benzene); 78-10-4 (TEOS); 4499-86-9 (Tetrapropylammonium hydroxide) Role: RCT (Reactant), RACT (Reactant or reagent) (zeolite/sintered metal fibers composites as effective structured catalysts)']
Record created on 2006-04-18, modified on 2016-08-08