Iannone, Francesco et al. published their research in Journal of Molecular Catalysis A: Chemical in 2017 | CAS: 2387-23-7

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Computed Properties of C13H24N2O

Ionic liquids/ZnO nanoparticles as recyclable catalyst for polycarbonate depolymerization was written by Iannone, Francesco;Casiello, Michele;Monopoli, Antonio;Cotugno, Pietro;Sportelli, Maria Chiara;Picca, Rosaria Anna;Cioffi, Nicola;Dell’Anna, Maria M.;Nacci, Angelo. And the article was included in Journal of Molecular Catalysis A: Chemical in 2017.Computed Properties of C13H24N2O This article mentions the following:

A useful protocol for waste bis-phenol A-polycarbonates (BPA-PC) chem. recycling is proposed based on a bifunctional acid/basic catalyst composed by nanostructured zinc oxide and tetrabutylammonium chloride (ZnO-NPs/NBu4Cl) in quality of Lewis acid and base, resp. Retro-polymerization reaction proved to be of general application for several nucleophiles, including water, alcs., amines, polyols, aminols and polyamines, leading to the complete recovery of BPA monomer and enabling the PC polymer to function as a green carbonylating agent (green phosgene alternative) for preparing carbonates, urethanes and ureas. A complete depolymerization can be obtained in seven hours at 100 °C and ZnO nanocatalyst can be recycled several times without sensible loss of activity. Remarkably, when polycarbonate is reacted with glycerol, it is possible to realize in a single process the conversion of two industrial wastes (BPA-PC and glycerol) into two valuable chems. like BPA monomer and glycerol carbonate (the latter being a useful industrial solvent and fuel additive). In the experiment, the researchers used many compounds, for example, 1,3-Dicyclohexylurea (cas: 2387-23-7Computed Properties of C13H24N2O).

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Computed Properties of C13H24N2O

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics