Article
Chemistry, Physical
Paolo Sonzini, Nicolas Berthet, Caterina Damiano, Veronique Dufaud, Emma Gallo
Summary: This study achieved the covalent immobilization of a free-base porphyrin on SBA-15 silica and utilized it for the catalytic cycloaddition of CO2 to three-membered rings. The catalytic system based on TPPH2@SBA-15/TBAX exhibited excellent activities in reactions with epoxides, N-alkyl, and N-aryl aziridines, resulting in cyclic carbonates and N-alkyl/aryl oxazolidinones, respectively. Notably, this is the first example of the heterogeneously catalyzed synthesis of N-aryl oxazolidinones from corresponding N-aryl aziridines. The methodology showed good scalability and recyclability, indicating its potential for practical applications.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Applied
Kuikui Zhang, Zhenbang Liu, Ning Liu
Summary: A three-component catalytic system was developed, involving benzimidazolium salts, CrCl2, and TBAB, with each component playing a distinct role in the catalytic process as clarified by control experiments and spectroscopic measurements. The terminal epoxides showed high reactivity in the catalytic system under mild conditions, while increasing the temperature, CO2 pressure, and/or prolonging the reaction time also enhanced catalytic activity for internal epoxides.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Qingshuo Li, Mengqing Li, Xinrui Zhao, Kexin Zhao, Hongxia Wang, Congzhen Qiao, Xiaohong Li, Zhijun Zhang, Haibo Chang, Tong Lin
Summary: This paper introduces a novel catalytic system using detonation nanodiamond (DND) and potassium iodide (KI) to efficiently catalyze the cycloaddition of CO2 with propylene oxide, forming propylene carbonate in mild solvent-free conditions. DND-KI shows superior catalytic activity and long service life, attributed to the special functional groups of DND and synergistic effect with KI during the reaction.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Physical
Yanqing Di, Yiheng Chen, Yang Cao, Xiaowei Cui, Yongliang Liu, Chunsheng Zhou, Youying Di
Summary: The combination of [Tb-2(CO2)(9)] units and [Tb-2(CO2)(6)(HCO2)(H2O)(2)]n chains under acidic solvothermal condition resulted in the formation of a highly robust microporous framework. This framework demonstrated high catalytic activity for the cycloaddition of CO2 with epoxides under mild solvent-free conditions.
Article
Biochemical Research Methods
Winyoo Sangthong, Jakkapan Sirijaraensre
Summary: In this study, density functional theory calculations were used to investigate the cycloaddition reaction of ethylene oxide (EO) with CO2 in the absence of a co-catalyst. The influence of exchanged metals on the adsorption of EO was found to be significant. The proposed reaction mechanism involves the concerted mechanism, with the metals initiating the EO ring opening and the formation of two new C-O bonds between the adsorbed EO and CO2. The Cu-FAU catalyst exhibited the lowest activation energy, which can be attributed to moderate adsorption of EO and larger electron transfer at the transition state.
JOURNAL OF MOLECULAR GRAPHICS & MODELLING
(2022)
Article
Chemistry, Multidisciplinary
Chinh Hoang Tran, Ha-Kyung Choi, Eun-Gyeong Lee, Byeong-Ryeol Moon, Wenliang Song, Il Kim
Summary: A series of Prussian blue analogs (PBAs) were investigated as heterogeneous catalysts for the fixation of carbon dioxide (CO2) to glycidol. Zn(II)-Co(III) PBA with a cubic crystal structure exhibited the highest catalytic activity, selectivity, and recyclability for the cycloaddition reaction. By using a Zn(II)-Co(III) double metal cyanide catalyst, branched polycarbonate polyols and linear polycarbonates with high carbonate content were produced via ring-opening copolymerization of CO2 and various epoxides. Mechanistic pathways were proposed combining experimental results with computational studies.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Engineering, Chemical
Zhengyan Qu, Minghui Zhou, Jiuxuan Zhang, Hong Jiang, Rizhi Chen
Summary: One-dimensional Co@carbon nanofibers catalysts synthesized from electrospinning ZIF-67-mixed nanofibers exhibit high catalytic activity and good recyclability for the CO2 cycloaddition with epichlorohydrin.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Energy & Fuels
Xiaofeng Zhang, Hengfei Zhang, Bo Qiu, Dandan Zhu, Sheng Zhang, Yunpeng Bian, Junhong Wang, Dajian Li, Shimin Wang, Wenpeng Mai, Jian Chen, Tao Li
Summary: This study presents a simple design approach to create efficient catalytic nanoreactors for the cycloaddition of CO2 to cyclic carbonates. The Al(III) porphyrin-based porous organic polymer catalyst demonstrated high efficiency even without solvent, surpassing most previously reported catalysts. The catalyst showed good stability for recyclability and achieved a high turnover frequency even with dilute CO2. This research provides a simple and efficient synthetic strategy for the cycloaddition of CO2, facilitating future industrial applications.
Review
Biochemistry & Molecular Biology
Dorota Manka, Agnieszka Siewniak
Summary: In recent years, there has been a focus in the chemical industry on designing or modifying chemical processes to meet the requirements of proecological sustainable development and green chemistry principles. The synthesis of cyclic carbonates from CO2 and epoxides is a clear example of this trend, offering improvements over existing methods and using renewable carbon dioxide as a raw material. However, the low reactivity of CO2 necessitates the use of catalysts, with recent interest in deep eutectic solvents as potential cheap and biodegradable catalysts for this process.
Article
Chemistry, Multidisciplinary
Frances N. Singer, Arron C. Deacy, Thomas M. McGuire, Charlotte K. Williams, Antoine Buchard
Summary: A catalyzed chemical recycling method for the widely investigated polymer poly(cyclohexene carbonate) is reported, which can convert it into useful monomers. The method exhibits high selectivity and activity, and achieves depolymerization through chain-end catalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Inorganic & Nuclear
Caterina Damiano, Paolo Sonzini, Matteo Cavalleri, Gabriele Manca, Emma Gallo
Summary: The direct insertion of CO2 into three-membered rings is a significant strategy for the synthesis of cyclic carbonates and oxazolidin-2-ones. The use of ruthenium porphyrin complexes and metal-free porphyrins has been investigated to promote this conversion.
INORGANICA CHIMICA ACTA
(2022)
Review
Chemistry, Multidisciplinary
Qi Wu, Manoj Pudukudy, Baiyu Y. Chen, Yunfei F. Zhi, Shaoyun Y. Shan
Summary: This article introduces the synthesis and utilization of bio-based carbonates, which are produced from the reaction of CO2 and bio-based compounds. These materials have high commercial value and provide a direction for the green utilization of CO2.
Article
Chemistry, Inorganic & Nuclear
Amir Said, Caiyun Liu, Chang Gao, Dexin Wang, Huihui Niu, Yanshu Liu, Guo Wang, Chen-Ho Tung, Yifeng Wang
Summary: A high-nuclearity titanium oxide cluster (TOC) with main-group element Pb2+ was synthesized and showed high catalytic activities for CO2 cycloaddition under visible-light irradiation. The cluster not only helps reduce greenhouse gas emissions, but also produces valuable industrial materials. The study demonstrates the potential of heterometal-decorated TOCs in cost-effective and efficient CO2 capture and storage.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Kai Chen, Rui Yan, Zhenjiang Li, Weizhou Huang, Luoyu Gao, Tong Duan, Haoying Tong, Yongqiang Li, Jie Sun, Kai Guo
Summary: Halogen bonding catalysis was introduced into [3+2] cycloaddition reactions of epoxides with CO2, isocyanates, and CS2. By synthesizing a series of halogen bond donors and optimizing the catalyst, high conversions were achieved under specific conditions, transforming epoxides into five-membered heterocycles with high yields and selectivity. H-1 NMR and C-13 NMR titrations confirmed the coordination of the halogen bond donor with the substrate, suggesting a possible mechanism involving halogen bonding activation of epoxides and subsequent ring-opening reactions.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Multidisciplinary
Luoyu Gao, Yi Zhou, Zhenjiang Li, Jun He, Yuanyuan Qu, Xin Zou, Bo Liu, Canliang Ma, Jie Sun, Kai Guo
Summary: By designing ion halide organocatalysts with weak C-H and N-H hydrogen bond donors, the cycloaddition of CO2 with epoxide reactions were successfully achieved with high yield and selectivity, demonstrating practical utility.
JOURNAL OF CO2 UTILIZATION
(2022)
