Dr. Satish Kabra

Independent consultant

This paper suggests a ‘Sustainability Assessment Tool’ that can be used in early design phases of production processes. “Green Chemistry” principles were considered as a baseline when proposing the sustainability indicators. European chemicals regulations and databases were also applied and used as a baseline in chemicals hazards assessment. The to...

The direct synthesis of dimethyl carbonate (DMC) from carbon dioxide and methanol is an atom economic, green and promising process. The present work focuses on this process using calcined hydrotalcite (CHT) supported on hexagonal mesoporous silica (HMS) as a catalyst and phosphonium based ionic liquid (IL) as promoter. Phosphonium based ionic liqui...

Phenolic ethers are useful commercial entities which have been traditionally produced via polluting routes that could be replaced by benign catalytic processes. In the current work, O-methylation of mono-, di- and tri-hydroxy benzenes (phenolics), namely, phenol, catechol and pyrogallol, has been studied with dimethyl carbonate (DMC) as the etherif...

The present work is concerned with direct hydrogenation of CO2 to formic acid which takes into account thermodynamic feasibility and experimental studies. Poly-urea encapsulated catalysts were explored and the effect of ionic liquids under supercritical conditions was examined. The monometallic and bimetallic catalysts were prepared, characterized,...

This paper suggested multicriteria based evaluation tool to assess the sustainability of three different reaction routes to dimethyl carbonate: direct synthesis from carbon dioxide and methanol, transesterification of methanol and propylene carbonate, and oxidative carbonylation of methanol. The first two routes are CO 2-based and in a research and...

The present work concentrates on direct hydrogenation of CO2 to formic acid, evaluated by thermodynamic and experimental studies. Poly-urea encapsulated catalysts were explored and the effect of ionic liquids under supercritical conditions was examined. The monometallic and bimetallic catalysts were prepared, characterized, screened for the hydroge...

The direct synthesis of dimethyl carbonate from carbon dioxide and methanol is an atom economic, green and promising process. The present work focuses on the same using calcined hydrotalcite supported on hexagonal mesoporous silica as a catalyst and phosphonium based ionic liquid as promoter. Ionic liquids are good solvents for many substances and...

A sustainable process was developed using supported calcined hydrotalcite catalyst and by avoiding use of harmful organic solvents in the presence of ionic liquid and supercritical CO2. Present work focuses on direct synthesis of dimethyl carbonate from carbon dioxide and methanol, using supported calcined hydrotalcite as catalyst with phosphonium...

Ionic liquids have a varieties of applications in chemical processes as solvents as well as catalysts. Dimethyl carbonate (DMC) is considered to be a green and sustainable reagent for many processes. In this work selective O-methylation of mono-, di- and tri-hydroxy benzenes has been studied with DMC as the alkylating agent and ionic liquids as cat...

Various heteropoly acids and their modified versions as catalysts were synthesized, studied and screened. The catalysts prepared by using supercritical CO2 as medium were superior. Cesium substituted dodecamolebdophosphoric acid supported on K-10 clay catalyst was found to be the best catalyst for esterification of salicylic acid with methanol. The...