334
J.-B. Koo et al. / Journal of Catalysis 276 (2010) 327–334
Table 4
be controlled directly during the preparation. From the quantita-
Self-condensation of acetophenone over mesoporous ZSM-5.
tive FTIR analysis of pyridine and DTBPy adsorption, it was ob-
served that external acid sites could be varied by amount of
carbon template used in the microwave-irradiated synthesis. The
MW-40 having 100% Brønsted acid–covered mesopores could cat-
alyze the condensation reaction of 20,40-dimethoxyacetophenone
with 4-methoxybenzaldehyde effectively.
Sample
Conversion (%)
Selectivity (%)
trans-Dypnone
Othersa
C-10% ZSM-5 MW
C-20% ZSM-5 MW
C-30% ZSM-5 MW
C-40% ZSM-5 MW
C-10% ZSM-5 HT
C-20% ZSM-5 HT
C-30% ZSM-5 HT
C-40% ZSM-5 HT
19.5
35.4
40.6
42.1
0.3
2.3
2.9
6.8
83.0
84.1
84.2
84.4
98.7
90.8
71.1
77.6
17
15.9
15.8
15.6
1.3
9.2
28.9
22.4
Acknowledgments
Authors thank financial support of Nano Center for Fine Chem-
ical Fusion Technology from Industry and Energy ministry of Com-
Reaction condition: 100 mg catalyst was activated @ 100 °C for 2 h, temperature
160 °C, reaction time 5 h, acetophenone 40 mmol.
ˇ
merce of Korea. M.B. and J.C. thank the Academy of Sciences of the
a
Czech Republic for the financial support (M200400901).
Others: cis-dypnone and ketens.
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