School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang, 110870, China.
Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastów Ave. 42, Szczecin, 71-065, Poland.
Macromol Rapid Commun. 2024 Sep;45(18):e2400270. doi: 10.1002/marc.202400270. Epub 2024 Jul 29.
Microwave-assisted pyrolysis of PE to hydrogen and carbon material has great potential to solve the problem of waste PE induced white pollution and provide a promising way to produce hydrogen energy. To increase the hydrogen yield, a new microwave-assisted pyrolysis procedure should be developed. In the present study, a facile double-layer microwave-assisted pyrolysis (DLMP) method is developed to pyrolyze PE. Within this method, PE can be converted to hydrogen, multiwalled carbon nanotubes with extremely high efficiency compared with the traditional methods. A high hydrogen yield of 66.4 mmol g is achieved, which is ≈93% of the upper limit of the theoretical hydrogen yield generated from the PE pyrolysis process. The mechanism of high hydrogen yield during the microwave-assisted pyrolysis of PE using the DLMP method is also clarified in detail. The DLMP method paved the potential way for recycling plastic waste into high-value-added products.
微波辅助聚乙烯热解制氢和碳材料具有很大的潜力，可以解决废聚乙烯引起的白色污染问题，并为生产氢能提供有前途的途径。为了提高产氢率，需要开发新的微波辅助热解程序。在本研究中，开发了一种简便的双层微波辅助热解（DLMP）方法来热解聚乙烯。在该方法中，与传统方法相比，聚乙烯可以高效转化为氢气和多壁碳纳米管。获得了 66.4 mmol·g-1 的高产氢率，这接近聚乙烯热解过程中理论产氢率上限的 93%。还详细阐明了使用 DLMP 方法进行微波辅助聚乙烯热解时高产氢率的机理。DLMP 方法为将塑料废物回收成高附加值产品铺平了道路。
