期刊
CHEMCATCHEM
卷 12, 期 8, 页码 2215-2220出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.202000036
关键词
CO2 hydrogenation; C-methylation; Aromatics; One-pot synthesis
A combined catalyst comprising TiO2-supported Re (Re(1)/TiO2; Re=1 wt%) and H-MOR (SiO2/Al2O3=90) was found to promote the methylation of benzene using CO2 and H-2. This catalytic system exhibited high performance with regard to the synthesis of methylated benzenes and gave high yields of total methylated products (up to 52 % benzene-based yield and 42 % CO2-based yield) under the reaction conditions employed in this study (p(CO2)=1 MPa; p(H2)=5 MPa; T=250 degrees C; t=20 h) in a batch reactor. Catalyst screening demonstrated that a combination of Re(1)/TiO2 and H-MOR (SiO2/Al2O3=90) exhibited superior performance compared to other combinations of supported metal catalysts and zeolites in terms of both yield and selectivity for methylated benzenes.
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