| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 봄 (04/25 ~ 04/27, 제주 ICC) |
| 권호 |
18권 1호, p.1160 |
| 발표분야 |
촉매 |
| 제목 |
Dimethyl ether synthesis on bifunctional Cu-ZnO/Al2O3 catalysts: Effects of acidic site and copper surface area to catalytic performance |
| 초록 |
The dimethyl ether (DME) synthesis on the bifunctional Cu-ZnO/Al2O3 has been investigated to elucidate the effects of acidic site density with metallic copper surface area for catalytic performance. The direct synthesis DME from syngas is generally required two active sites such as hydrogenation of CO on metallic copper sites and dehydration of methanol on acidic sites. The bifunctional catalyst, Cu-ZnO/Al2O3, could be designed to have these two active sites by controlling preparation conditions. The catalysts were prepared by co-precipitation method in the slurry of acid catalyst of Al2O3 by varying weight ratio of CuO-ZnO/Al2O3. The catalytic activity for DME synthesis is well correlated with copper surface area and acidic site density, and product distribution of methanol and DME is strongly affected to the amount of acidic sites which was controlled by changing the CuO-ZnO/Al2O3 weight ratio. The catalytic activity was further explained by carrying out NH3-TPD analysis and copper surface area measurement using N2O titration method. |
| 저자 |
정지우1, 이발상2, 구현모1, 이영준1, 배종욱1, 박명준2
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| 소속 |
1성균관대, 2아주대 |
| 키워드 |
Cu-ZnO/Al2O3; bifunctional catalyst; syngas; acidic site; copper surface area
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| E-Mail |
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| 원문파일 |
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