Gausas, Laurynas published the artcileEvaluation of Manganese Catalysts for the Hydrogenative Deconstruction of Commercial and End-of-Life Polyurethane Samples, Category: pyridine-derivatives, the publication is ChemSusChem (2022), 15(1), e202101705, database is CAplus and MEDLINE.
Polyurethane (PU) is a thermoset plastic that is found in everyday objects, such as mattresses and shoes, but also in more sophisticated materials, including windmills and airplanes, and as insulation materials in refrigerators and buildings. Because of extensive inter-cross linkages in PU, current recycling methods are somewhat lacking. In this work, the effective catalytic hydrogenation of PU materials is carried out by applying a catalyst based on the earth-abundant metal manganese, to give amine and polyol fractions, which represent the original monomeric composition In particular, Mn-PhMACHO is found to catalytically deconstruct flexible foam, molded foams, insulation, and end-of-life materials at 1 weight% catalyst loading by applying a reaction temperature of 180°C, 50 bar of H2, and 0.9 weight% of KOH in iso-Pr alc. The protocol is showcased in the catalytic deconstruction of 2 g of mattress foam using only 0.13 weight% catalyst, resulting in 90% weight recovery and a turnover number of 905.
ChemSusChem published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Category: pyridine-derivatives.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem