| 摘要 |
5 Abstract INTEGRA TED PROCESS TO SELECTIVELY CONVERT RENEWABLE ISOBUT ANOL 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 C4 alcohol such as isobutanol, then sequentially dehydrating the isobutanol in the presence of a dehydration 10 catalyst to provide a C4 alkene such as isobutyl ene, dimerizing the C4 alkene to a form one or more C alkenes such as 2,4,4-trimethylpentenes or 2,5-dimethylhexene, then g dehydrocyclizing the Cg 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. 15 Figure for publication: None 51 |
