A thermal decomposition study of pine wood under ambient pressure using thermogravimetry combined with synchrotron vacuum ultraviolet photoionization mass spectrometry

作者：Zhou, Zhongyue^*; Jin, Hanfeng; Zhao, Long; Wang, Yizun; Wen, Wu; Yang, Jiuzhong; Li, Yuyang; Pan, Yang; Qi, Fei

来源：Proceedings of the Combustion Institute, 2017, 36(2): 2217-2224.

DOI：10.1016/j.proci.2016.06.081

• Pine wood
• Biomass
• Thermogravimetry
• VUV photoionization
• Mass spectrometry

As pyrolysis is the initial step involved in thermochemical processes of biomass, understanding of the pyrolytic behavior of biomass is crucial to biomass thermochemical conversions. This work presents a new facility for studying the pyrolysis behavior of solid fuels. The experimental setup contains a thermogravimetry system connected with a home-made reflectron time-of-flight mass spectrometer via a single-stage molecular beam sampling interface, and a tunable vacuum ultraviolet (VUV) light generated from synchrotron source is used for soft photoionization. Evolution of the gaseous products of pine wood pyrolysis was examined at a heating rate of 20 degrees C/min in a nitrogen environment at atmospheric pressure. Experiments were performed at the photon energies of 10.0, 10.5 and 11.0 eV, and mass spectra of gaseous products were recorded by the time-of-flight mass analyzer every five seconds. Species with the mass range of m/z 20-220 are presented and possible formation pathways of typical products are discussed.

• 出版日期2017
• 单位上海交通大学; 中国科学技术大学