Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China.
Bioresour Technol. 2013 Feb;130:449-56. doi: 10.1016/j.biortech.2012.11.081. Epub 2012 Dec 5.
Thermogravimetric-Mass Spectroscopy (TG-MS) study on lignin decomposition under different (oxygen-containing) atmospheres was carried out to investigate thermal performance of lignin during pyrolysis, oxidative gasification, oxy/fuel combustion and CO(2) gasification. Only one significant mass loss stage was observed for lignin decomposition under helium (He), while another stage, representing char oxidation, appeared under oxygen and CO(2) conditions. No significant variation of the activation energy was presented for the first pyrolysis stage under different atmospheres (from 40.4 to 53.2kJ/mol). A much higher temperature was required for char oxidation under CO(2) than those under O(2) atmospheres, giving the activation energy of 541.9kJ/mol as compared to around 160kJ/mol for O(2)-containing atmospheres. The evolution profiles of CO and CO(2) under different atmospheres were in good accordance with the DTG curves regardless of atmospheres.
采用热重-质谱联用（TG-MS）技术研究了不同（含氧）气氛下木质素的热解行为，旨在探讨木质素在热解、氧化气化、富氧/燃料燃烧和 CO2 气化过程中的热性能。在氦气（He）气氛下，木质素的热解只观察到一个明显的质量损失阶段，而在氧气和 CO2 条件下则出现了另一个阶段，代表着炭的氧化。在不同气氛下（从 40.4 到 53.2kJ/mol），第一热解阶段的活化能没有明显变化。在 CO2 气氛下，炭的氧化需要更高的温度，其活化能为 541.9kJ/mol，而在含氧气氛下，其活化能约为 160kJ/mol。无论气氛如何，不同气氛下 CO 和 CO2 的演化谱与 DTG 曲线都非常吻合。
