In:
Chinese Journal of Chemical Physics, AIP Publishing, Vol. 26, No. 1 ( 2013-02-01), p. 77-82
Abstract:
Dimethyl ether carbonylation to methyl acetate was comparatively investigated over mordenite supported copper (Cu/HMOR) catalysts prepared by different methods including evaporation, urea hydrolysis, incipient wetness impregnation and ion-exchange. The results showed that Cu/HMOR prepared via iron-exchange method exhibited the highest catalytic activity due to the synergistic effect of active-site metal and acidic molecular sieve support. Conversion of 95.3% and methyl acetate selectivity of 94.9% were achieved under conditions of 210 °C, 1.5 MPa, and GSHV of 4883 h−1. The catalysts were characterized by nitrogen absorption, X-ray diffraction, NH3 temperature program desorption, and CO temperature program desorption techniques. It was found that Cu/HMOR prepared by ion-exchange method possessed high surface area, moderate strong acid centers, and CO adsorption centers, which improved catalytic performance for the reaction of CO insertion to dimethyl ether.
Type of Medium:
Online Resource
ISSN:
1674-0068
,
2327-2244
DOI:
10.1063/1674-0068/26/01/77-82
Language:
English
Publisher:
AIP Publishing
Publication Date:
2013
detail.hit.zdb_id:
2381472-X
SSG:
6,25
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