Effect of treatment with tartaric acid on carbon as a catalyst in the absorption of NO into the hexamminecobalt(II) solution

Abstract

Tartaric acid solution is applied to change the surface characteristics of activated carbon to improve its catalytic capability in the regeneration of Co(NH3)62+ that is used to realize the simultaneous removal of NO and SO2. The experimental results show that the best treatment condition is impregnating the carbon samples in 1.5 mol l−1 tartaric acid solution for 18 h followed by being activated at 400°C for 4 h under nitrogen atmosphere. After being treated with tartaric acid solution, the surface area of activated carbon and the acidity on its surface increase. The experiments show that the modified carbon can obtain a much higher NO removal efficiency than the original carbon. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 333–341, 2018

Kinetic Modeling of Glucose Oxidation to Tartaric Acid over Monometallic Pt/TiO2 and Bimetallic AuPt/TiO2 Catalysts: Role of Bimetals on C–H and C–C Cleavages

“…20,21 However, biotransformation technologies still suffer from low productivity. 22,23 An alternative method involving direct synthesis of TA from glucose oxidation using bimetallic AuPt/TiO 2 catalysts has been reported recently. 24,25 This synthetic method provides a promising route for the production of various downstream polymers and pharmaceutical products.…”

“… , Traditionally, it was obtained as a crude solid byproduct from wine fermentation. , The productivity and quality were strongly influenced by the growth of grapes and climatic conditions . A chemical synthesis method using maleic anhydride has been found to significant discharge wastewater containing heavy metals. − Enzyme catalysis is another effect way to produce TA, owing to high substrate conversion and product purity. , Specifically, maleic acid is epoxidized to cis -epoxy succinic acid, after which utilizes relevant hydrolase produced by microorganisms to obtain TA. , However, biotransformation technologies still suffer from low productivity. , An alternative method involving direct synthesis of TA from glucose oxidation using bimetallic AuPt/TiO 2 catalysts has been reported recently. , This synthetic method provides a promising route for the production of various downstream polymers and pharmaceutical products. − …”