| 초록 |
Dimethyl ether (DME) can be utilized to produce methyl acetate (MA) by carbonylation of DME, which can be transformed to ethanol or acetic acid through a subsequent hydrogenation or hydration reaction. To insert the carbon monoxide into the DME, zeolite can be used as a heterogeneous catalyst since its acidic sites can efficiently form methoxy and acetyl intermediates from the adsorbed DME and CO molecules. Nowadays, the seed-derived ferrierite (FER) was investigated to observe the effects of crystallinity and acidic natures to catalytic activity and stability. Seed-mediated synthesis of FER was applied using an as-synthesized FER as a seeding material to tune the crystallinity of the final FER zeolite at different seed concentration. A pristine FER and seed-mediated FER were tested for DME carbonylation, and the FER seed contents were optimized to find out the best catalyst by showing a higher stability originated from a less deposition of coke precursors during DME carbonylation. |
