Show simple item record

dc.contributor.authorPirmoradi, Maryam
dc.date.accessioned2016-11-23T05:30:21Z
dc.date.available2016-11-23T05:30:21Z
dc.date.issued2016-05
dc.identifier.otherpirmoradi_maryam_201605_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/pirmoradi_maryam_201605_ms
dc.identifier.urihttp://hdl.handle.net/10724/36306
dc.description.abstractMethacrylic acid was synthesized from the bio-based substrates citric acid, itaconic acid, and 2-hydroxyisobutyric acid. Hydrotalcite, a solid base catalyst, was employed to form methacrylic acid through decarboxylation of itaconic acid and citric acid. The effect of varying temperatures, catalyst mass, residence times and substrate concentrations on methacrylic acid concentration and yield was determined. Comparing yields of methacrylic acid in each series of reactions resulted in finding an optimum substrate to catalyst mass ratio where methacrylic acid yield reaches to its highest value (9.6 g-substrate/g-catalyst and 22.7% yield for citric acid, 6.4 g/g and 22.9% yield for itaconic acid). Catalyst reusability experiments resulted higher methacrylic acid yields. Methacrylic acid was also formed from 2-hydroxyisobutyric acid in a single-step dehydration reaction. Among these three substrates, the highest yield of methacrylic acid (71.48 %) was achieved at 275 °C and a 1 minute residence time using 2-hydroxyisobutyric acid and subcritical water.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectMethacrylic Acid
dc.subjectBase Catalysis
dc.subjectDecarboxylation
dc.subjectBio-based
dc.titleBio/catalytic synthesis of methacrylic acid
dc.typeThesis
dc.description.degreeMS
dc.description.departmentBiological and Agricultural Engineering
dc.description.majorBiochemical Engineering
dc.description.advisorJames Kastner
dc.description.committeeJames Kastner
dc.description.committeeWilliam Kisaalita
dc.description.committeeMark Eiteman


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record