生物质热解过程中含氮模型化合物研究进展

由于生物质成分的复杂性,直接热解生物质很难获得其氮转化机理,利用含氮模型化合物热解成为近年来研究生物质NO_x生成机理的主要方式。首先总结了燃料氮在生物质中的赋存形态及其常用的模型化合物,综述了蛋白质、环二肽、氨基酸等模型化合物热解的一般机理,并对影响模型化合物热解路径的化学成分、热解温度、升温速率、含氧量等因素做了分析。目前,通过模型化合物热解研究,研究人员可以得到生物质中燃料氮的转化机理,但有些机理还存在一些争议,结合计算化学理论分析可能获得更清晰的NO_x生成机理。

The mechanism of nitrogen conversion during the pyrolysis of biomass:a review of model compounds study

Due to the complexity of biomass composition,it is difficult to obtain nitrogen transform mechanism by direct pyrolysis of biomass,and nitrogen-containing model compounds were often used to research the generation mechanism of NO x in recent years.The occurrence patterns of fuel nitrogen in biomass and its commonly used model compounds were summarized,and the general mechanism of pyrolysis of model compounds such as protein,cyclic dipeptide and amino acid was reviewed.The chemical composition,pyrolysis temperature,heating rate,oxygen content and other factors influencing the pyrolysis path of the model compound were analyzed.At present,The mechanism of nitrogen conversion during pyrolysis of biomass still exist a lot of controversy,and more accurate reaction mechanism will be confirmed by experiments coupled with theoretical studies of quantum chemical computation.