Abstract
A mixture of formalin and ethanol was passed at 240 to 320°C over various metal oxides supported on silica gel and metal phosphates using nitrogen as the carrier gas. The main products were acrolein, acetaldehyde, methanol, and carbon dioxide. The highest yields of acrolein were obtained with the nickel phosphate and silica-supported tungsten, zinc, nickel, and magnesium oxides. The yield of acrolein, on ethanol basis, reached 40 to 52 mol-% with a formaldehyde-to-ethanol molar ratio of 2. The effects of the reaction variables on acrolein formation were studied using a nickel phosphate catalyst with a phosphorus-to-nickel atomic ratio of 2/3. It was proposed that acrolein is formed by the aldol condensation of formaldehyde with acetaldehyde which is formed in the reaction of hydrogen transfer from ethanol to formaldehyde.
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.
