I NTERNATIONAL J OURNAL OF C HEMICAL R EACTOR E NGINEERING Volume 5 2007 Article A14 Determination of the Optimum Operating Conditions for Direct Synthesis of Dimethyl Ether from Syngas Gholam Reza Moradi ∗ Rohollah Ghanei † Fereydoon Yaripour ‡ * Razi University, moradi m@yahoo.com † Razi University, faraz93001@yahoo.com ‡ National Iranian Petrochemical Company, Petrochemical Research & Technology Company, Arak Center, Catalysis Research Group, P.O.Box 1493, Arak, Iran, f.yaripour@npc-rt.ir ISSN 1542-6580 Copyright c 2007 The Berkeley Electronic Press. All rights reserved.