Chemistry Letters, Vol.33, No.5, 598-599, 2004
Superior dehydration of CH3OH over double layer bed of solid acid catalysts - A novel approach for dimethyl ether (DME) synthesis
A novel catalyst bed packed with two layers of gamma-Al2O3 and Na-H-ZSM-5 showed an outstanding CH3OH dehydration activity, total selectivity to DME and longer stability during the reaction time. The TPD of NH3 confirmed that appropriate amounts of Na-impregnation on H-ZSM-5 drastically reduced the strong acid-sites resulting in 100% selectivity to DME.