Zhang Zedong, Wang Jia, Ge Xiaohu, Wang Shule, Li Ang, Li Runze, Shen Ji, Liang Xiao, Gan Tao, Han Xiaodong, Zheng Xusheng, Duan Xuezhi, Wang Dingsheng, Jiang Jianchun, Li Yadong
Department of Chemistry, Tsinghua University, Beijing 100084, China.
Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China.
J Am Chem Soc. 2023 Oct 18;145(41):22836-22844. doi: 10.1021/jacs.3c09338. Epub 2023 Oct 5.
Mixed plastic waste treatment has long been a significant challenge due to complex composition and sorting costs. In this study, we have achieved a breakthrough in converting mixed plastic wastes into a single chemical product using our innovative single-atom catalysts for the first time. The single-atom Ru catalyst can convert ∼90% of real mixed plastic wastes into methane products (selectivity >99%). The unique electronic structure of Ru sites regulates the adsorption energy of mixed plastic intermediates, leading to rapid decomposition of mixed plastics and superior cycle stability compared to traditional nanocatalysts. The global warming potential of the entire process was evaluated. Our proposed carbon-reducing process utilizing single-atom catalysts launches a new era of mixed plastic waste valorization.
由于混合塑料废物成分复杂且分类成本高，其处理长期以来一直是一项重大挑战。在本研究中，我们首次使用创新的单原子催化剂，在将混合塑料废物转化为单一化学产品方面取得了突破。单原子钌催化剂可将约90%的实际混合塑料废物转化为甲烷产品（选择性>99%）。钌位点独特的电子结构调节了混合塑料中间体的吸附能，导致混合塑料快速分解，与传统纳米催化剂相比具有卓越的循环稳定性。评估了整个过程的全球变暖潜能值。我们提出的利用单原子催化剂的碳减排工艺开启了混合塑料废物增值利用的新时代。
