89489-56-5Relevant articles and documents
Electrosynthesis of cyclic carbonates from CO2 and epoxides on a reusable copper nanoparticle cathode
Wu, Laxia,Yang, Hengpan,Wang, Huan,Lu, Jiaxing
, p. 23189 - 23192 (2015)
A highly stable and reusable Cu NP cathode was prepared by a simple method and used for the electrosynthesis of cyclic carbonates by electroreduction of CO2 in the presence of epoxides under mild conditions. No added metal catalyst is required and the yields vary from moderate to very good. Furthermore, the activity of the cathode was shown to depend on the size of the Cu NPs.
Synthetic, spectral, structural and catalytic activity of infinite 3-D and 2-D copper(ii) coordination polymers for substrate size-dependent catalysis for CO2 conversion
Bhaskaran,Trivedi, Manoj,Yadav, Anita K.,Singh, Gurmeet,Kumar, Abhinav,Kumar, Girijesh,Husain, Ahmad,Rath, Nigam P.
, p. 10078 - 10088 (2019)
Two copper(ii) coordination polymers, viz. [Cu2(OAc)4(μ4-hmt)0.5]n (1) and [Cu{C6H4(COO-)2}2]n·2C9H14N3 (2), have been synthesized solvothermally and characterized. The solid-state structure reveals that 1 is an infinite three-dimensional (3D) motif with fused hexagonal rings consisting of Cu(ii) and hmt in a μ4-bridging mode, while 2 is an infinite two dimensional (2D) motif containing Pht-2 in a μ1-bridging mode. CP 1 has a two-fold interpenetrated diamondoid network composed of 4-connected sqc6 topology with the point symbol of {66}, while 2 has a Shubnikov tetragonal plane network possessing a 4-connected node with an sql topology with a point symbol of {44·.62}-VS [4·4·4·4·?·?]. Both CPs 1 and 2 serve as efficient catalysts for CO2-based chemical fixation. Moreover, 1 demonstrates one of the highest reported catalytic activity values (%yield) among Cu-based MOFs for the chemical fixation of CO2 with epoxides. 1 shows high efficiency for CO2 cycloaddition with small epoxides but its catalytic activity decreases sharply with the increase in the size of epoxide substrates. The catalytic results suggested that the copper(ii) motif-catalyzed CO2 cycloaddition of small substrates had been carried out within the framework, while large substrates could not enter into the framework for catalytic reactions. The high efficiency and size-dependent selectivity toward small epoxides on catalytic CO2 cycloaddition make 1 a promising heterogeneous catalyst for carbon fixation and it can be used as a recoverable stable heterogeneous catalyst without any loss of performance. The solvent-free synthesis of the cyclic carbonate from CO2 and an epoxide was monitored by in situ FT-IR spectroscopy and an exposed Lewis-acid metal site catalysis mechanism was proposed.
Docking Site Modulation of Isostructural Covalent Organic Frameworks for CO2 Fixation
Chen, Long,Li, Yusen,Xing, Guolong,Yang, Fan,Zhang, Ting,Zhao, Ziqiang
supporting information, (2020/03/23)
Three isostructural covalent organic frameworks (COFs) with either methoxyl, hydroxyl, or both groups on the channel wall, are synthesized and served as metal-free heterogeneous catalysts for chemical fixation of CO2. Among them, the COF decora
Thermodynamic favorable CO2 conversion via vicinal diols and propargylic alcohols: A metal-free catalytic method
Han, Li-Hua,Li, Jing-Yuan,Song, Qing-Wen,Zhang, Kan,Zhang, Qian-Xia,Sun, Xiao-Fang,Liu, Ping
supporting information, p. 341 - 344 (2019/07/04)
Organocatalysis represents a promising field in chemical fixation of CO2. Herein, a facile metal-free strategy was reported for the one-pot preparation of cyclic carbonates and α-hydroxy ketones from vicinal diols, propargylic alcohols and CO2. Wide scope of vicinal diols and propargylic alcohols was demonstrated to be efficient under the DBU-catalyzed conditions. A plausible mechanism was proposed, which included detailed main and side reactions under the metal-free conditions.
