Towards the Circular Economy: Converting Aromatic Plastic Waste Back to Arenes over a Ru/Nb2O5 Catalyst
Towards the Circular Economy: Converting Aromatic Plastic Waste Back to Arenes over a Ru/Nb2O5 Catalyst
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迈向循环经济：通过 Ru/Nb2O5 催化剂将芳香塑料废物转化回芳烃
DOI：
10.1002/ange.202011063
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发表时间：
2021
影响因子：
--
通讯作者：
Yan Ning
中科院分区：
文献类型：
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作者：
Jing Yaxuan;Wang Yanqin;Furukawa Shinya;Xia Jie;Sun Chengyang;Hulsey Max J.;Wang Haifeng;Guo Yong;Liu Xiaohui;Yan Ning
由于塑料废物对环境的破坏性影响，其升级是21世纪的重大挑战之一。在这里，我们展示了通过Ru/ nb2o5催化剂催化氢解将具有C−O和/或C−C键的各种芳香塑料废物升级为芳烃（收率为75 - 85%）的第一个例子。这种催化剂不仅允许单组分芳香族塑料的选择性转化，更重要的是，可以同时将芳香族塑料的混合物转化为芳烃。这种优异的性能归功于其独特的特点：(1)Nb2O5上的小尺寸Ru团簇，阻止了芳环的吸附和氢化；(2) nbox对C−O键激活和Brønsted酸位点对C−C键激活具有较强的氧亲和力。本研究为循环经济背景下芳香族塑料废弃物重回塑料生产供应链提供了催化途径。
The upgrading of plastic waste is one of the grand challenges for the 21stcentury 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/Nb2O5catalyst. 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 Nb2O5, which prevent the adsorption of aromatic ring and its hydrogenation; (2) the strong oxygen affinity of NbOxspecies 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.