The effect of olefin addition to a stream dimethyl ether on the methanol homologation reaction is investigated using iron-substituted zeolites Fe-beta and Fe-ZSM-5. was plug-flow microreactors in temperature range 240–400 °C, at total pressure 0.239 MPa WHSV 6.12 (g DME/g cat -hr). For (Si/Fe= 9.2) catalysts, isobutene co-feeding almost doubles (DME) consumption rate shifts selectivity towards ...

Fe (2 wt%)-Cu (1.5 wt%)-ZSM-5 SCR catalyst contacted 1.5 wt% of Na and 1.8 K in order to simulate poisoning by species more specifically contained exhaust gases from diesel engines power plants. Poisoning agents do not cause loss surface area nor pore occlusion. XRD SEM results showed that alkali metals introduction did deteriorate the crystallinity morphology zeolite crystals. However, a signi...

A WO3/Fe-Cu-ZSM-5 catalyst was prepared using the solid state ion exchange method (SSIE) and its performance for Selective Catalytic Reduction of NO with NH3 (NH3-SCR NO) investigated. The study shows that tungsten addition can slightly improve high temperature catalytic activity Fe-Cu-ZSM-5. influence hydrothermal aging at 850 °C 5 h on structural textural properties also studied in this paper...

The selective oxidation of methane to methanol is a key challenge in catalysis. Iron and copper modified ZSM-5 catalysts are shown to be effective for this reaction using H2O2 as the oxidant under continuous flow operation. Co-impregnation of ZSM-5 with Fe and Cu by chemical vapour impregnation yielded catalysts that showed high selectivity to methanol (> 92% selectivity, 0.5 % conversion), as ...

Fe–Cu–ZSM-5 and Ce–Fe–Cu–ZSM-5 solids prepared using solid-state ion exchange method (SSIE) were tested in the NH3–SCR of NO reaction characterized N2 physisorption at 77 K, MAS 27Al magnetic resonance, X-ray diffraction, scanning electron microscopy, EPR spectroscopy transmission microscopy coupled to energy-dispersive order follow effect Ce addition on textural structural properties Fe–Cu–MFI...

In order to elucidate the effect of sodium on the activity of ZSM-5 supported metal oxides catalysts (ZnO-Al2O3/ZSM-5 and SnO-Al2O3/ZSM-5) for the transesterification of soybean oil with methanol, ZSM-5 supported metal oxides were prepared with and without sodium hydroxide by impregnation. The metal compositions of the ZSM-5 supported metal oxide catalysts and the metal concentrations dissolved...