Abstract
The catalytic reaction of benzaldehyde with n-heptaldehyde was studied at 100–175°C in a stirred batch autoclave reactor using mesoporous molecular sieve Al-MCM-41 supported MgO. Competitive reactions of cross- versus self-aldolization produce α-pentylcinnamaldehyde (α-PC) and 2-pentyl-2-nonenal, respectively. Both reactions exhibit similar activation energies. Increasing the deposited amount of MgO on Al-MCM-41 enhances the catalyst base amount but diminishes the surface area. The conversion of n-heptaldehyde increases with catalyst base amount, reaction temperature and reaction time, whereas the α-PC selectivity exhibits only small variation with reaction conditions. The catalytic activity of Al-MCM-41 is significantly enhanced by the deposition of MgO.
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Yu, JI., Shiau, S.Y. & Ko, AN. Al-MCM-41 Supported Magnesium Oxide as Catalyst for Synthesis of α-Pentylcinnamaldehyde. Catalysis Letters 77, 165–169 (2001). https://doi.org/10.1023/A:1012735011521
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DOI: https://doi.org/10.1023/A:1012735011521