Zr–La–Promoted Zeolites for Obtaining Synthetic Fuel — Dimethyl Ether
P. G. MUSICH1, L. N. KURINA1 and A. V. VOSMERIKOV2
1Tomsk State University, Prospekt Lenina 36, Tomsk 634050 (Russia)
2Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademicheskiy 4, Tomsk 634021 (Russia)
Keywords: zeolite, ZSM–5, catalysts, modification, synthesis gas, dimethyl ether
Abstract
Catalysts containing lanthanum and zirconium oxides were prepared on the basis of zeolite of ZSM–5 type using different preparation procedures. The effect of promoting additive and the method of zeolite modification on their catalytic and physicochemical properties in the process of obtaining dimethyl ether from synthesis gas was studied. It is demonstrated that the introduction of the modifying agent by impregnation causes an increase in the yield of target product in comparison with non–modified sample by a factor of 1.7 and 1.8 for zirconium– and lanthanum–containing catalysts, respectively. The optimal conditions of the process were determined.
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