Han Zhang, Wenwen Zhang, Fusheng Liu, Zheng-Hong Luo, Kunqi Gao, Mengshuai Liu
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Unveiling the integrated function of metallo-/ionic-covalent organic polymers for boosting atmospheric CO2 conversion
Multifunctional metallo-/ionic-covalent organic polymers (TCTB@Zn-iCOPs) were constructed through one-pot multicomponent reaction in a deep eutectic solvent at room temperature. The structures of various TCTB@Zn-iCOPs were characterized, demonstrating their successful integration of multiple sites and excellent structural stability. Then TCTB@Zn-iCOPs were employed to transform atmospheric CO2 into cyclic carbonates. The results showed that satisfactory product yields were obtained under mild and additive-free conditions, with a high TOF value of 101 h−1; furthermore, the optimized TCTB@Zn-iCOP2 exhibited excellent versatility in catalyzing the cycloaddition reactions between various substituted epoxides and CO2, and its activity did not significantly decrease after being reused for five times. Compared with previously reported nonmetallic iCOPs, the TCTB@Zn-iCOP2 shows significantly improved activity and stability. Finally, DFT calculations were conducted along with a comparison of energy barriers for possible reaction paths, gaining an in-depth understanding of the synergistic catalytic mechanism involving multiple sites.
期刊介绍：
The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering.
The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field.
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Soft Materials: Synthesis, Processing and Products
Thermodynamics and Molecular-Scale Phenomena
Transport Phenomena and Fluid Mechanics.
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