VARIATIONS ON PRINS-LIKE CHEMISTRY TO PRODUCE 2,5-DIMETHYLHEXADIENE FROM ISOBUTANOL
申请人:Taylor Thomas Jackson
公开号:US20120271082A1
公开(公告)日:2012-10-25
The method of the present invention provides a high yield pathway to 2,5-dimethylhexadiene from renewable isobutanol, which enables economic production of renewable p-xylene (and subsequently, terephthalic acid, a key monomer in the production of PET) from isobutanol. In addition, the present invention provides methods for producing 2,5-dimethylhexadiene from a variety of feed stocks that can act as “equivalents” of isobutylene and/or isobutyraldehyde including isobutanol, isobutylene oxide, and isobutyl ethers and acetals. Catalysts employed in the present methods that produce 2,5-dimethylhexadiene can also catalyze alcohol dehydration, alcohol oxidation, epoxide rearrangement, and ether and acetal cleavage.
本发明的方法提供了一种从可再生异丁醇到2,5-二甲基己二烯的高产率途径,从而实现了从异丁醇经济生产可再生对二甲苯(随后是对苯二甲酸,PET生产中的关键单体)的方法。此外,本发明提供了一种从各种可以充当异丁烯和/或异丁醛“等效物”的原料中生产2,5-二甲基己二烯的方法,包括异丁醇、异丁烯氧化物和异丁基醚和缩醛。本方法中使用的催化剂不仅可以产生2,5-二甲基己二烯,还可以催化醇脱水、醇氧化、环氧化物重排、醚和缩醛裂解。