| Abstract |
The production of dimethyl ether (DME), renewable fuel, using dehydration of methanol over Co supported on kaolinite
catalysts was investigated. In this study, kaolinite was modified by impregnation of the various percentage of Co (5%Co/KN,
10%Co/KN, and 15%Co/KN) to improve the activity of the catalyst. The prepared catalysts were characterized by nitrogen
gas adsorption using the Brunauer–Emmett–Teller (BET) method, and the X-ray diffractometer (XRD). The thermogravimetric
analysis (TGA) was used to analyze of coke formation on spent catalysts. The catalytic performances of catalysts were tested in
a fixed-bed reactor at atmospheric pressure at the temperature range of 250–350 ◦C with a fixed weight hourly space velocity
(WHSV) of 2.054 h−1. It was found that 5%Co/kaolinite showed the highest methanol conversion of 81.7% among the Co/KN
catalysts; however, the DME selectivity was less than 80%. The presence of Co gave the less formation of coke on used
catalysts indicating that the Co/KN catalyst had more stable than unmodified kaolinite. The 15%Co/KN is an active, selective,
and durable catalyst for DME production at the temperature of 300 ◦C. |
Publication
Journal Publication
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