Quality Control of Basic copper carbonate. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Basic copper carbonate, is researched, Molecular CH2Cu2O5, CAS is 12069-69-1, about Catalytic Urea Synthesis from Ammonium Carbamate Using a Copper(II) Complex: A Combined Experimental and Theoretical Study. Author is Hanson, Danielle S.; Wang, Yigui; Zhou, Xinrui; Washburn, Erik; Ekmekci, Merve B.; Dennis, Donovan; Paripati, Amay; Xiao, Dequan; Zhou, Meng.
The synthesis of urea fertilizer is currently the largest CO2 conversion process by volume in the industry. In this process, ammonium carbamate is an intermediate en route to urea formation. We determined that the tetraammineaquacopper(II) sulfate complex, [Cu(NH3)4(OH2)]SO4, catalyzed the formation of urea from ammonium carbamate in an aqueous solution A urea yield of up to 18 ± 6% was obtained at 120°C after 15 h and in a high-pressure metal reactor. No significant urea formed without the catalyst. The urea product was characterized by Fourier transform IR (FT-IR), powder X-ray diffraction (PXRD), and quant. 1H{13C} NMR analyses. The [Cu(NH3)4(OH2)]SO4 catalyst was then recovered at the end of the reaction in a 29% recovery yield, as verified by FT-IR, PXRD, and quant. UV-vis spectroscopy. A precipitation method using CO2 was developed to recover and reuse 66 ± 3% of Cu(II). The catalysis mechanism was investigated by the d. functional theory at the B3LYP/6-31G** level with an SMD continuum solvent model. We determined that the [Cu(NH3)4]2+ complex is likely an effective catalyst structure. The study of the catalysis mechanism suggests that the coordinated carbamate with [Cu(NH3)4]2+ is likely the starting point of the catalyzed reaction, and carbamic acid can be involved as a transient intermediate that facilitates the removal of an OH group. Our work has paved the way for the rational design of catalysts for urea synthesis from the greenhouse gas CO2.
Although many compounds look similar to this compound(12069-69-1)Quality Control of Basic copper carbonate, numerous studies have shown that this compound(SMILES:O[Cu]OC(O[Cu]O)=O), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI