Integrated process to selectively convert renewable isobutanol to p-xylene

The present invention is directed to a method for preparing renewable and relatively high purity p-xylene from biomass. For example, biomass treated to provide a fermentation feedstock is fermented with a microorganism capable of producing a Calcohol such as isobutanol, then sequentially dehydrating...

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Bibliographic Details
Main Authors HENTON, DAVID E, PETERS, MATTHEW W, JENNI, MADELINE, TAYLOR, JOSHUA D, MANZER, LEO E
Format Patent
LanguageEnglish
Published 26.04.2012
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The present invention is directed to a method for preparing renewable and relatively high purity p-xylene from biomass. For example, biomass treated to provide a fermentation feedstock is fermented with a microorganism capable of producing a Calcohol such as isobutanol, then sequentially dehydrating the isobutanol in the presence of a dehydration catalyst to provide a Calkene such as isobutylene, dimerizing the C alkene to a form one or more C alkenes such as 2,4,4-trimethylpentenes or 2,5-dimethylhexene, then dehydrocyclizing the C alkenes in the presence of a dehydrocyclization catalyst to selectively form renewable p-xylene in high overall yield. The p-xylene can then be oxidized to form terephthalic acid or terephthalate esters.
Bibliography:Application Number: AU20100303461