The effect of catalyst ratio on catalytic performance in liquid phase dimethyl ether process
Conference
·
OSTI ID:324858
- Chinese Academy of Sciences, Taiyuan, Shanxi (China). Inst. of Coal Chemistry
In the liquid phase dimethyl ether (LPDME) process, two functionally different catalysts are slurried together in an inert liquid medium. Syngas reacts on the surface of the methanol catalyst and methanol is dehydrated on the surface of the dehydration catalyst dispersed in the liquid. The process is adaptable to carbon monoxide-rich syngas derived from second generation coal gasifiers. The effect of catalyst ratio on catalytic performances of the dual catalyst was studied in liquid phase dimethyl ether synthesis from syngas at 280 C, 4.0 MPa. CO conversion, H{sub 2} conversion and DME productivity increased with an increase of catalyst ratio initially, reached their maximum at a catalyst ratio of 4.0--5.0, and then decreased. Methanol productivity and methanol equivalent productivity had a similar trend to that of DME productivity. DME selectivity and hydrocarbon selectivity increased with an increase in catalyst ratio whereas methanol selectivity decreased with catalyst ratio.
- OSTI ID:
- 324858
- Report Number(s):
- CONF-970931--
- Country of Publication:
- United States
- Language:
- English
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