Highly Selective Deoxydehydration of Tartaric Acid over Supported and Unsupported Rhenium Catalysts with Modified Acidities. Issue 19 (25th August 2016)

• Record Type: Journal Article
• Authors: Li, Xiukai; Zhang, Yugen
• Is Part Of: ChemSusChem. Volume 9:Issue 19(2016:Oct.)
• Page Start: 2774
• Page End: 2778
• Publication Date: 2016-08-25
• Subjects: biomass -- deoxydehydration -- heterogeneous catalysis -- rhenium -- tartaric acid; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201600865
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: The deoxydehydration (DODH) of sugar acids to industrially important carboxylic acids is a very attractive topic. Oxorhenium complexes are the most‐often employed DODH catalysts. Because of the acidity of the rhenium catalysts, the DODH products of sugar acids were usually in the form of mixture of free carboxylic acids and esters. Herein, we demonstrate strategies for the selective DODH of sugar acids to free carboxylic acids by tuning the Lewis acidity or the Brønsted acidity of the rhenium‐based catalysts. Starting from tartaric acid, up to 97 % yield of free maleic acid was achieved. Based on our strategies, functional polymer immobilized heterogeneous rhenium catalysts were also developed for the selective DODH conversion of sugar acids. Abstract : Sugar DODH‐y : By tuning the Lewis acidity or the Brønsted acidity of rhenium‐based catalysts, free maleic acid and muconic acid are synthesized selectively from the deoxydehydration (DODH) of tartaric acid and mucic acid. Functional polymer‐immobilized heterogeneous rhenium catalysts for the selective DODH conversion of sugar acids are also developed.