Ma Qing, Gao Yongjun, Sun Bo, Du Jianlong, Zhang Hong, Ma Ding
Hebei Research Center of the Basic Discipline of Synthetic Chemistry, College of Chemistry and Materials Science, Hebei University, Baoding, China.
Beijing National Laboratory for Molecular Sciences, New Cornerstone Science Laboratory, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
Nat Commun. 2024 Sep 20;15(1):8243. doi: 10.1038/s41467-024-52515-y.
Both plastics and CO are waste carbon resources, and their accumulation in nature has led to severe environmental pollution. However, simultaneously converting plastic waste and CO into value-added chemicals remains a challenge. Here we demonstrate a catalytic reforming process that converts plastics and CO into syngas over an electrified FeCrAl heating wire. The temperature of the electrified heating wire can quickly exceed 800 °C, facilitating the decomposition of polyethylene into gaseous hydrocarbons. The high-temperature heating wire promote the CO deoxygenation, resulting in the generation of CO, as well as the dehydrogenation of gaseous hydrocarbons. Significantly, the additional O species from CO and the carbon species from hydrocarbons can react to form CO, maintaining the high catalytic activity of the electrified heating wire. This novel approach is of paramount to achieving a circular economy in addressing the ongoing environmental crisis caused by the accumulation of plastic waste and excessive CO emissions.
塑料和一氧化碳都是废弃的碳资源，它们在自然界中的积累已导致严重的环境污染。然而，同时将塑料废物和一氧化碳转化为增值化学品仍然是一项挑战。在此，我们展示了一种催化重整过程，该过程可在带电的铁铬铝加热丝上将塑料和一氧化碳转化为合成气。带电加热丝的温度可迅速超过800°C，促进聚乙烯分解为气态烃。高温加热丝促进一氧化碳脱氧，生成一氧化碳，同时气态烃发生脱氢反应。值得注意的是，一氧化碳中的额外氧物种与烃类中的碳物种可反应形成一氧化碳，从而维持带电加热丝的高催化活性。这种新方法对于实现循环经济以应对由塑料废物积累和过量一氧化碳排放造成的持续环境危机至关重要。
