2013•Huagong jinzhanRequires access
Catalyst for dehydration of methanol to dimethyl ether
Jingli Liu
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Abstract
Pseudo-boehmite was synthesized by neutralization of aluminium nitrate with ammonia water,and then used as the raw material to prepare the catalyst for dehydration of methanol to dimethyl ether.The precipitation pH,reaction temperature in the pseudo-boehmite synthesis process and calcination temperature in catalyst preparation that influenced the performance of catalyst in dehydration of methanol to dimethyl ether were investigated.The results indicated that at precipitation pH 8.0±0.2,reaction temperature 50～60 ℃,and calcination temperature 550～650 ℃,the catalyst had the best activity.Modifying the catalyst with SiO2,SO42,PO43 improved further catalytic activity.