Abstract
Investigations were undertaken on the ethynylation of formaldehyde over a Cu 2C 2/MgSiO 4 catalyst in a slurry reactor to study the reaction kineics. The result show that this catalyst is highly selective to the main product 1,4-butynediol. It was found that the reaction rate is first order with respect to catalyst loading and zeroeth order in acetylene partial pressure at above 1.0 kg/cm 2. The activation energy was found to be 51.88 kJ/mol ensuring that the rate controlling step is a surface reaction. We chose to use a mechanistic model to explain our experimental data. We postulated a reaction mechanism in which reactants are adsorbed on different active sites respectively. According to this, the following rate expression of Langmuir-Hinshelwood type were obtained for the ethynylation of formaldehyde at 363 K: ▪ We also found that the ethynylation reaction can be expressed with a simple empirical power law model with a reaction order of 0.59 with respect 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.
