One-step production of renewable adipic acid esters from mucic acid over an Ir–ReO_x/C catalyst with low Ir loading

Abstract

The production of adipic acid, a large-volume platform chemical, from biomass represents a petroleum-free route to manufacturing nylon and other polymers more sustainably. In this study, a one-step conversion of...

Molybdenum Catalysts based on Salan Ligands for the Deoxydehydration Reaction

“…First demonstrated in 1996 by Cook and Andrews 5 with an oxo-rhenium catalyst (Cp*ReO3) and triphenylphosphine (PPh3) reductant, a variety of different variations of homogenous [6][7][8][9][10][11][12] and supported [13][14][15][16] rhenium (Re) catalysts have since then been explored and reported. The high cost of rhenium compounds has more recently driven research in the direction of non-precious metal catalysts based on vanadium (V) and molybdenum (Mo) in effecting the reaction.…”

The oxidation of d‐galactose into mucic acid (galactaric acid): experimental and computational insights towards a bio‐based platform chemical

“…[19] Both D-glucaric acid and mesogalactaric acids are valuable starting materials for the synthesis of 2,5-furan dicarboxylic acid and its derivatives, [5,20,21] as biobased replacement for terephthalic acid in polyesters, or adipic acid for polyamide synthesis. [22,23] Nitric acid based oxidations are industrially relevant for the production of organic acids, such as adipic acid, glyoxylic acid and fine chemicals, due to low cost and readiness of reagents, despite the production of greenhouse gasses N x O y as byproducts. [24] Rather than quitting nitric acid oxidation, processes for limiting the industrial emission of nitrogen oxides in the environment are under study.…”

“…D‐Glucaric acid and its C‐4 epimer meso ‐galactaric acid (or mucic acid, Figure 1) are by far the most popular in the industrial framework, despite their production is still on a limited scale [19] . Both D‐glucaric acid and meso ‐galactaric acids are valuable starting materials for the synthesis of 2,5‐furan dicarboxylic acid and its derivatives, [5,20,21] as bio‐based replacement for terephthalic acid in polyesters, or adipic acid for polyamide synthesis [22,23] …”

Molybdenum catalysts based on salan ligands for the deoxydehydration reaction

“…First demonstrated in 1996 by Cook and Andrews 5 with an oxo-rhenium catalyst (Cp*ReO 3 ) and triphenylphosphine (PPh 3 ) reductant, a variety of different variations of homogenous [6][7][8][9][10][11][12] and supported [13][14][15][16] rhenium (Re) catalysts have since then been explored and reported. The high cost of rhenium compounds has more recently driven research in the direction of non-precious metal catalysts based on vanadium (V) and molybdenum (Mo) in effecting the reaction.…”