HYDROLYTIC OXIDATION OF CELLOBIOSE IN THE PRESENCE OF A Pt-CONTAINING POLYMERIC CATALYST

В данной работе приводятся результаты исследования процесса гидролитического окисления целлобиозы (4-(β-глюкозидо)-глюкозы) в присутствии гетерогенного Pt-содержащего катализатора на основе мезопористой матрицы сверхсшитого полистирола (СПС). Исследования процессов гидролитического окисления дисахаридов являются первым шагом к разработке технологий прямой конверсии растительных полисахаридов, в первую очередь, целлюлозы, в альдоновые и альдаровые кислоты, широко использующиеся в химическом синтезе и различных областях промышленности. This work presents the results of a study of the process of hydrolytic oxidation of cellobiose (4- (β-glycoside) -glucose) in the presence of a heterogeneous Pt-containing catalyst based on a mesoporous matrix of hypercrosslinked polystyrene (HPS). Studies of the processes of hydrolytic oxidation of disaccharides are the first step towards the development of technologies for the direct conversion of plant polysaccharides, primarily cellulose, into aldonic and aldaric acids, which are widely used in chemical synthesis and various industries.

A unique pathway to platform chemicals: aldaric acids as stable intermediates for the synthesis of furandicarboxylic acid esters

A novel method for the efficient production of furandicarboxylic acid from sugar diacids by acid-catalysed dehydration.

Production of Hexaric Acids from Biomass

Sugar acids obtained by aldohexose oxidation of both the terminal aldehyde group and the hydroxy group at the other end to carboxyl groups are called hexaric acids (i.e., six-carbon aldaric acids). Because hexaric acids have four secondary hydroxy groups that are stereochemically diverse and two carboxyl groups, various applications of these acids have been studied. Conventionally, hexaric acids have been produced mainly by nitric acid oxidation of aldohexose, but full-scale commercialization has not been realized; there are many problems regarding yield, safety, environmental burden, etc. In recent years, therefore, improvements in hexaric acid production by nitric acid oxidation have been made, while new production methods, including biocatalytic methods, are actively being studied. In this paper, we summarize these production methods in addition to research on the application of hexaric acids.

Selective oxidation of uronic acids into aldaric acids over gold catalyst

Uronic acids available from hemicelluloses were oxidized into aldaric acids, valuable building block chemicals. Au/Al2O3 oxidized glucuronic and galacturonic acids quantitatively to the corresponding glucaric and galactaric acids at mild conditions.