Dimethyl carbonate (DMC) is considered as an environmentally benign chemical due to negligible ecotoxicity, low bioaccumulation, and low persistence. However, the traditional process of DMC synthesis via phosgene and methanol is limited in industry owing to the toxic raw material involved. Thus, environmentally friendly phosgene-free processes for DMC production have been proposed and developed...

A novel process path is proposed to produce glycolic acid (GA) from CO2 as the feedstock, including capture, power-to-hydrogen, hydrogenation methanol, methanol oxidation formaldehyde, and formaldehyde carbonylation units. The bottlenecks are discussed perspectives of carbon utilization, emissions, total site energy integration, techno-economic analysis. utilization ratio 82.5%, capture unit ha...

this study was conducted to evaluate the cytoprotection of various extracts and bioactive compounds found in pistacia vera againts cytotoxicity, ros formation, lipid peroxidation, protein carbonylation , mitochondrial and lysosomal membrane damages in cell toxicity models of diabetes related carbonyl (glyoxal) and oxidative stress (hydroperoxide). methanol, water and ethyl acetate were used to ...

Acetic acid is an essential chemical used in the production of many products. Using methanol as bio-building block, acetic produced may be incorporated bio-based This study deals with enhancing efficiency separations a process using homogeneous catalyst, which most applied today industrially. Several configurations for downstream processing by distillation are investigated effective combination...

The mechanism of dimethyl carbonate (DMC) synthesis from oxidative carbonylation of methanol over Cu-exchanged Y zeolite has been investigated using in situ infrared spectroscopy and mass spectrometry under transient-response conditions. The formation of DMC is initiated by reaction of molecularly adsorbed methanol with oxygen to form either monoor di-methoxide species bound to Cu+ cations. Rea...

A theoretical analysis of the mechanism of dimethyl carbonate (DMC) synthesis via oxidative carbonylation of methanol on Cu-exchanged Y zeolite, Cu-Y, was explored using density functional theory. These calculations show that methanol adsorbs in the presence of oxygen to form coadsorbed methoxide and hydroxide species and dimethoxide species on extraframework Cu+ cations. DMC can form by CO add...

Introduction Carbonylation of aryl olefins and alcohols is one of the promising and environmentally benign routes [1] to aryl-propionic acids (e.g. Ibuprofen, Naproxen), important as non-steroidal anti-inflammatory agents. This reaction is considered as the best example of application of catalysis to develop “greener” routes for pharmaceuticals, replacing stoichiometric synthetic routes, as est...

The synthesis of tetranuclear gold complexes, a structurally unprecedented octanuclear complex with a planar [Au(I) 8 ] core, and pentanuclear [Au(I) 4 M(I) ] (M=Cu, Ag) complexes is presented. The linear [Au(I) 4 ] complex undergoes C-H functionalization of carbonyl compounds under mild reaction conditions. In addition, [Au(I) 4 Ag(I) ] catalyzes the carbonylation of primary amines to form ure...