Effect of pressure on direct synthesis of DME from syngas over metal-pillared ilerites and metal/metal-pillared ilerites |
| |
Authors: | Sung-Hwan Ahn Song-Hyoung Kim Kwang-Bo Jung Hyun-Sik Hahm |
| |
Affiliation: | (1) Department of Chemical Engineering, Myongji University, San 38-2, Namdong, Yongin, Gyeonggi-do, 449-728, Korea;(2) Department of Chemical Engineering, Han-Seo University, 360 Daegokri, Haemi-myun, Seosansi, 360-706, Korea |
| |
Abstract: | The effect of pressure on the direct synthesis of dimethyl ether (DME) from syngas over metal (Cu, Zn) pillared ilerites and metal (Cu, Zn) impregnated metal-pillared ilerites was explored. The prepared catalysts were characterized by XRD, BET, ICP-AES, SEM and FT-IR. The direct DME synthesis reaction was carried out in a differential fixed bed reactor with the prepared catalysts at various pressures (10, 20, 30 bar), 250°C and H2/CO ratio of 2. The Cu/Zn-pillared ilerite catalyst showed the highest catalytic activity among the prepared catalysts at 20 bar, in which CO conversion was about 62% and DME selectivity was about 89%. CO conversion increased with pressure, and DME selectivity increased with pressure in the range of 10–20 bar, and above the pressure slightly decreased with pressure. The optimum pressure for this reaction was 20 bar. |
| |
Keywords: | Metal-pillared Ilerite Dimethyl Ether (DME) Direct DME Synthesis Syngas |
本文献已被 SpringerLink 等数据库收录! |
|