6482-34-4Relevant articles and documents
METHOD FOR PRODUCING CARBONATE ESTERS, AND CATALYTIC STRUCTURE FOR PRODUCING CARBONATE ESTERS
-
Paragraph 0148-0149; 0179-0180, (2021/09/17)
Provided are a method for producing carbonate esters, and a catalytic structure for producing carbonate esters, whereby solid catalyst powder formation and detachment are suppressed and superior carbonate ester reaction efficiency is yielded when a catalytic structure constituted by a sufficient quantity of a cerium-oxide-containing solid catalyst supported on a substrate is used. The method for producing carbonate esters includes reacting a monohydric alcohol and carbon dioxide in the presence of a catalytic structure and a hydrating agent. The catalytic structure includes a substrate and a catalytic layer that is formed on at least a portion of the surface of the substrate and contains a solid catalyst and an inorganic binder. The solid catalyst contains cerium oxide. The supported quantity of the solid catalyst is 15 g/m2 to 200 g/m2, inclusive. The inorganic binder contains silica and/or alumina.
Phosgene-free synthesis of symmetric bis(polyfluoroalkyl) carbonates
Semenova, Anna M.,Ezhikova, Marina A.,Kodess, Mikhail I.,Zapevalov, Aleksandr Ya.,Pestov, Aleksandr V.
, p. 257 - 258 (2021/05/04)
A phosgene-free synthesis of symmetric bis(polyfluoroalkyl) carbonates involves the transesterification of diphenyl carbonate with polyfluoroalkanols promoted by stoichiometric amounts of titanium(iv) alkoxides.
Transfer hydrogenation of cyclic carbonates and polycarbonate to methanol and diols by iron pincer catalysts
Liu, Xin,De Vries, Johannes G.,Werner, Thomas
, p. 5248 - 5255 (2019/10/11)
Herein, we report the first example on the use of an earth-abundant metal complex as the catalyst for the transfer hydrogenation of cyclic carbonates to methanol and diols. The advantage of this method is the use of isopropanol as the hydrogen source, thus avoiding the handling of flammable hydrogen under high pressure. The reaction offers an indirect route for the reduction of CO2 to methanol. In addition, poly(propylene carbonate) was converted to methanol and propylene glycol. This methodology can be considered as an attractive opportunity for the chemical recycling of polycarbonates.