Abstract
The vapor phase aldol condensation of formaldehyde with acetaldehyde has been investigated over montmorillonite-rich (Mt-rich) materials exchanged with Na +, Cs +, Mg 2+, Ni 2+, La 3+ or UO 2 2+ cations. The main products are acrolein (via cross-condensation), and crotonaldehyde (via self-condensation), indicating that aldol processes effectively take place over such catalysts. The results showed that ion-exchange induces different catalytic activities depending on the nature of the cation introduced and the reaction temperature. Both the acid and base properties exert strong effects upon the total conversion of acetaldehyde and the acrolein:crotonaldehyde ratio. It was also found that cross-condensation takes place exclusively over weakly acidic sites. The highest cross-selectivities were obtained over Na, Cs and Mg-containing catalysts.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
