Qing Ma,Yongjun Gao,Bo Sun,Jianlong Du,Hong Zhang,Ding Ma
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引用次数: 0
Abstract
Both plastics and CO2 are waste carbon resources, and their accumulation in nature has led to severe environmental pollution. However, simultaneously converting plastic waste and CO2 into value-added chemicals remains a challenge. Here we demonstrate a catalytic reforming process that converts plastics and CO2 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 CO2 deoxygenation, resulting in the generation of CO, as well as the dehydrogenation of gaseous hydrocarbons. Significantly, the additional O species from CO2 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 CO2 emissions.
塑料和二氧化碳都是废弃的碳资源,它们在自然界中的积累导致了严重的环境污染。然而,如何同时将废塑料和二氧化碳转化为高附加值化学品仍是一个挑战。在此,我们展示了一种催化重整工艺,该工艺通过电加热铁铬铝加热丝将塑料和二氧化碳转化为合成气。电加热丝的温度可迅速超过 800 °C,从而促进聚乙烯分解成气态碳氢化合物。高温加热丝促进 CO2 脱氧,从而产生 CO 以及气态碳氢化合物的脱氢。值得注意的是,二氧化碳中的额外 O 种和碳氢化合物中的碳种可以反应生成 CO,从而保持电加热丝的高催化活性。这种新颖的方法对于实现循环经济,解决塑料废弃物的积累和二氧化碳的过度排放所造成的持续环境危机至关重要。
期刊介绍:
Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.