Process for preparing dimethylether from methanol
AssigneeSK Corporation
InventorsKi-Won Jun, Hyun-Seog Roh, Kew-Ho Lee, Jae-Woo Kim
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Abstract
The present invention relates to a process for preparing dimethyl ether from methanol. More particularly, this invention relates to an improved process for preparing dimethyl ether with high yield useful as a clean fuel as well as a raw material in chemical industry performed via a catalytic system, wherein dehydration of methanol is first carried out by using a hydrophilic solid acid catalyst and then subsequent dehydration of methanol is carried out continuously by using a hydrophobic zeolite solid acid catalyst in the concurrent presence of unreacted methanol, dimethyl ether produced and water.
Claims5
A process for preparing dimethyl ether, which comprises the steps of:
- (a) dehydrating methanol by contacting said methanol with a hydrophilic solid acid catalyst;
- and (b) continuously dehydrating unreacted methanol by contacting with a zeolite, a hydrophobic solid acid catalyst, in a state where said unreacted methanol and products generated from said step (a) coexist.
Dependencies are inferred from the claim text.