申请人:LOCKHEED MARTIN ADVANCED ENERGY STORAGE, LLC
公开号:US20180105544A1
公开(公告)日:2018-04-19
Flow batteries incorporating an active material with one or more catecholate ligands can have a number of desirable operating features. Commercial syntheses of catechol produce significant quantities of hydroquinone as a byproduct, which presently has limited value in the battery industry and can represent a significant waste disposal issue at industrial production scales. Using a concerted, high-yield process, low-value hydroquinone can be transformed into high-value 1,2,4-trihydroxybenzene, which can be a desirable ligand for active materials of relevance in the flow battery industry. Methods for forming 1,2,4-trihydroxybenzene can include: oxidizing hydroquinone in a first reaction to form p-benzoquinone, converting the p-benzoquinone in a second reaction to form 1,2,4-triacetoxybenzene, deacetylating the 1,2,4-triacetoxybenzene in a third reaction to form 1,2,4-trihydroxybenzene, and isolating the 1,2,4-trihydroxybenzene after performing the first reaction, the second reaction and the third reaction consecutively.
含有一个或多个邻苯二酚配体的流动电池可以具有许多理想的运行特性。邻苯二酚的商业合成会产生大量的对苯二酚作为副产品,目前在电池行业中对其价值有限,同时在工业生产规模下可能代表着一个重要的废物处理问题。通过一个协同、高产率的过程,低价值的对苯二酚可以转化为高价值的1,2,4-三羟基苯,这可以成为流动电池行业中相关活性材料的理想配体。形成1,2,4-三羟基苯的方法可以包括:在第一反应中氧化对苯二酚以形成对苯醌,将对苯醌在第二反应中转化为1,2,4-三乙酰氧基苯,将1,2,4-三乙酰氧基苯在第三反应中去乙酰化以形成1,2,4-三羟基苯,并在依次进行第一反应、第二反应和第三反应后分离出1,2,4-三羟基苯。