Jun Zhao , Jianye Gao , Duanda Wang , Yong Chen , Lei Zhang , Wangjing Ma , Sui Zhao
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引用次数: 0
Abstract
The value-added utilization of plastic waste is a powerful way to effectively manage plastic waste and achieve a circular economy. However, high-performance catalysis often requires suitable substrate catalysts or complex processes, while low-energy consumption plastic upcycling technology is also urgently needed. In this study, various cheap and self-dispersing highly active iron-cobalt–nickel-monometallic and bimetallic functional catalysts were synthesized through a simple and fast one-step method for catalytic upcycling of plastic into hydrogen and carbon nanotubes. Results indicated that Ni1Fe3Ox, Ni1Co3Ox and Ni3Co2Ox are the most efficient catalysts, realizing hydrogen yield as high as 60.2 mmol g-1 plastic, 63.2 mmol g-1 plastic, 63.5 mmol g-1 plastic and high selectivity of 79.4 vol%, 81.4 vol% and 83.7 vol%, respectively, for microwave-intensified catalytic dehydrogenation of LDPE, the hydrogen yield of which is almost 2–3 times that of traditional thermal catalysis. More importantly, a high hydrogen yield of 44.1 mmol g-1 plastic is also achieved when the feedstock is extended to the landfill mixed plastics waste. These results demonstrate that the synergies of self-dispersing bimetallic catalysts are promising for plastic waste upcycled via microwave-intensified catalysis.
期刊介绍:
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.