迈向循环经济：在Ru/Nb₂O₅催化剂上实现将芳香族塑料废料转化回芳烃
Towards the Circular Economy: Converting Aromatic Plastic Waste Back to Arenes over a Ru/Nb O Catalyst.
作者信息
Jing Yaxuan, Wang Yanqin, Furukawa Shinya, Xia Jie, Sun Chengyang, Hülsey Max J, Wang Haifeng, Guo Yong, Liu Xiaohui, Yan Ning
机构信息
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China.
Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
出版信息
Angew Chem Int Ed Engl. 2021 Mar 1;60(10):5527-5535. doi: 10.1002/anie.202011063. Epub 2021 Jan 18.
The upgrading of plastic waste is one of the grand challenges for the 21 century owing to its disruptive impact on the environment. Here, we show the first example of the upgrading of various aromatic plastic wastes with C-O and/or C-C linkages to arenes (75-85 % yield) via catalytic hydrogenolysis over a Ru/Nb O catalyst. This catalyst not only allows the selective conversion of single-component aromatic plastic, and more importantly, enables the simultaneous conversion of a mixture of aromatic plastic to arenes. The excellent performance is attributed to unique features including: (1) the small sized Ru clusters on Nb O , which prevent the adsorption of aromatic ring and its hydrogenation; (2) the strong oxygen affinity of NbO species for C-O bond activation and Brønsted acid sites for C-C bond activation. This study offers a catalytic path to integrate aromatic plastic waste back into the supply chain of plastic production under the context of circular economy.
由于塑料垃圾对环境具有破坏性影响，其升级利用是21世纪面临的重大挑战之一。在此，我们展示了首例通过在Ru/Nb₂O催化剂上进行催化氢解，将各种具有C-O和/或C-C键的芳香族塑料垃圾升级转化为芳烃（产率75-85%）。这种催化剂不仅能使单一组分的芳香族塑料选择性转化，更重要的是，能使芳香族塑料混合物同时转化为芳烃。其优异性能归因于以下独特特性：（1）Nb₂O上尺寸较小的Ru簇，可防止芳香环的吸附及其氢化；（2）NbO物种对C-O键活化具有较强的氧亲和力，以及对C-C键活化具有布朗斯特酸位点。本研究提供了一条催化途径，可在循环经济背景下将芳香族塑料垃圾重新纳入塑料生产供应链。
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