Reactive atmosphere significantly affects pyrolysis of biomass, as the gases such as NH₃ involves in the reaction network in pyrolysis. In this study, instead of feeding reactive gas, the impacts of co-feeding ethanol or glycol on the pyrolysis of cellulose were investigated at varied pyrolysis temperatures (400 and 600 °C). The results showed that the co-feeding of the alcohols affected yields of bio-char and tar, evolution of light organics and heavy organics, elemental composition, formation of fused ring structures, crystallinity, thermal stability, distribution of functionalities in the bio-char. The co-feeding of both glycol and ethanol enhanced the formation of the heavy components with the π-conjugated ring structures and affected the production of the light organics such as furfural and glycolaldehyde. Glycol or its derivatives cross-polymerized with the organics in bio-char, increasing bio-char yield and made the bio-char more oxygen-rich. Ethanol, however, showed the converse effects. Co-feeding of the alcohols promoted crystallinity but showed distinct effects on thermal stability of the bio-char at the varied pyrolysis temperatures. Both pyrolysis temperature and structures of the alcohols determined their extents of involvement in the pyrolysis of cellulose.

反应性气氛显着影响生物质的热解，因为诸如NH ₃的气体参与热解反应网络。在这项研究中，代替进料反应性气体，在不同的热解温度（400和600°C）下，研究了共进料乙醇或乙二醇对纤维素热解的影响。结果表明，醇的共同进料会影响生物炭和焦油的产率，轻有机物和重有机物的演变，元素组成，稠环结构的形成，结晶度，热稳定性，生物炭中功能的分布。乙二醇和乙醇的共同进料促进了具有π共轭环结构的重组分的形成，并影响了诸如糠醛和乙醇醛等轻质有机物的生产。乙二醇或其衍生物与生物炭中的有机物发生交联，提高生物炭产量，并使生物炭更富氧。但是，乙醇显示出相反的效果。醇的共同进料促进了结晶度，但是在不同的热解温度下对生物炭的热稳定性显示出明显的影响。醇的热解温度和结构决定了它们参与纤维素热解的程度。