Chlorocuprate(I) ionic liquid as an efficient and stable Cu-based catalyst for hydrochlorination of acetylene was written by Ren, Yanfei;Wu, Botao;Wang, Fumin;Li, Hang;Lv, Guojun;Sun, Mingshuai;Zhang, Xubin. And the article was included in Catalysis Science & Technology in 2019.Application In Synthesis of Pyridinehydrochloride This article mentions the following:
The gas-liquid reaction process for acetylene hydrochlorination, especially using ionic liquids (ILs) as homogeneous reaction media, has gained much attention because it can effectively avoid the deactivation caused by hot spots and carbon deposition. However, the relatively low activity and high price of the currently used ILs limit their practical applications. Herein, we synthesize a series of chlorocuprate(I) ILs to explore an efficient and stable Cu-based catalyst for acetylene hydrochlorination. The N-methylpyrrolidonium hydrochloride-0.60CuCl ([Hnmpo]Cl-0.60CuCl) IL exhibits the best catalytic performance, showing an acetylene conversion of 86% over 150 h under the conditions of 180°C and 50 h-1 GHSV. In addition, the [Hnmpo]Cl-0.60CuCl IL has the capacity to effectively activate HCl, which is directly observed by in situ FTIR. By combining the exptl. results and theor. calculations, we propose the reaction mechanism and find that the catalytic performance of chlorocuprate(I) ILs is pos. correlated with the adsorption of HCl. The strong interaction with HCl is identified as the key characteristic of the [Hnmpo]Cl-CuCl IL, which endows it with excellent catalytic performance. Briefly, this study shows that the cost-effective [Hnmpo]Cl-CuCl IL can be a viable alternative to the com. heterogeneous HgCl2/AC catalyst for acetylene hydrochlorination. In the experiment, the researchers used many compounds, for example, Pyridinehydrochloride (cas: 628-13-7Application In Synthesis of Pyridinehydrochloride).
Pyridinehydrochloride (cas: 628-13-7) belongs to pyridine derivatives. In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Application In Synthesis of Pyridinehydrochloride