from first principles PP-I-1

PP-III-34Studies of the Thermal Decomposition of Methanol Adsorbed by ZeoliteBased Catalyst Using TG/DSC and GC/MS AnalysisGuliyev B.B., Ismailov E.H., Ibrahimov H.J., Babayeva F.A., Rustamov M.I.ANAS Institute of Petrochemical Processes named after Yu.G.Mamedaliyev,30, Khojaly, Baku, AZ1025, Azerbaijanbquliyev@gmail.comToday catalytic conversion of methanol to hydrocarbons (MTH) is very attractive processand zeolite based systems are extensively used as catalysts for this process [1-4]. The presentpaper aims are TG/DSC and GC/MS study of thermal decomposition features of methanoladsorbed by ZSM-5 based catalyst. The used catalyst (2-6 wt.%)Co-(2-6wt.%Ln)/ZSM-5 isprepared by impergnation technique and characterised by the Horiba Scientific XGT-7000X-ray fluorescence (XRF) microscope. The zeolites thermal behavior is studied bythermogravimetric (TG) and differential scanning calorimetry (DSC) methods at temperatureinterval of 20-500°C with heating rate of 20 o C/min in the corundum crucible usingSimultaneous TG-DTA/DSC Apparatus “STA 449 F3 Jupiter”. Gaseous products areanalyzed by on-line gas chromatography-mass spectroscopy (Thermo Scientific ISQ SingleQuadrupole GC-MS) using a capillary column (15m x 0.25mm) and DynaMax XR detectionsystem in the 30-500 u mass range.The TG/DSC-GC/MS analysis results suppose thermal stability of catalyst up to 500°C andobtaining gasoline range hydrocarbons (hexane, benzene, toluene, xylene) from the methanoladsorbed over ZSM-5 based catalyst. Ethane, propane, butane and pentane are also detected.The conversion of methanol to aromatic hydrocarbons increases as the Ln loading increases.The formation of Ln-Co structures as active sites necessary for formation of aromatichydrocarbons and mechanism of the reaction are discussed.References:[1].F.A. Babayeva, B.B. Guliyev, E.F. Babayeva, S.I. Abasov, H.D. Ibrahimov Processes ofpetrochemistry and oil‐refining, №3 (2011) 176.[2]. H. A. Zaidi and K. K. Pant. Ind. Eng. Chem. Res. 47 (2008) 2970.[3]. Freeman D.,Wells R.P.K., Hutchings G.J. J. Catal., 205 (2002) 358.[4]. Piriev N.N., Akhmedova R.G., Babayeva F.A. et al. Processes of petrochemistry and oil-refining,№1 (2010) 102.186