Abstract
Methylation of carboxylic acids in supercritical carbon dioxide modified with methanol was studied using a flow-through system with and without catalyst. Results without catalyst revealed the reactivity of the fluid itself, although the complete conversion was difficult. Using strong cation-exchanger with H form as catalyst allowed the complete conversion under milder conditions. Parameters, such as temperature, pressure and methanol concentration, were optimized taking account of the rapidity. Applicability of this method combined with solid-phase extraction was demonstrated for the analysis of phenoxyacetic acids in water.
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.
