林产化学与工业Issue(2)：23-28,6.DOI:10.3969/j.issn.0253-2417.2014.02.004
木质素磺酸盐的化学结构与热解特性
Chemical Structure and Thermochemical Property of Lignin Sulfonate
摘要
Abstract
Calcium lignosulfonate ( Ca-Ls ) was selected as the raw material. Its chemical structure and property were characterized by means of elemental analysis and Fourier transform infrared spectroscopy ( FT-IR) . The pyrolysis characteristics were also analyzed by thermal gravimetric analysis ( TG ) and pyrolysis-gas chromatography combined with mass spectrometry (Py-GC/MS). The results showed that:1) Ca-Ls had a lower carbon and nitrogen content and higher sulfur content than lignin from herbal wood;2) Ca-Ls contained rich guaiacyl (G-type) and syringyl (S-type) structure unit;3) the pyrolysis of Ca-Ls was divided into four stages, and the main pyrolysis temperature range was 150-450 ℃;4) when heating rate was 10, 20 and 30 ℃/min, the biggest weight loss peak on the DTG curves migrated to higher temperature, meanwhile, as the heating rate increased, the response time for sample particles to reach the desired pyrolysis temperature became shorter. Thus the thermal decomposition rate increased and the process of thermal decomposition of Ca-Ls was changed.关键词
木质素磺酸钙/红外光谱/热重法/热解-气相色谱/质谱Key words
calcium lignosulfonate (Ca-Ls)/FT-IR/TG/Py-GC/MS分类
化学化工引用本文复制引用
李计彪,武书彬,徐绍华..木质素磺酸盐的化学结构与热解特性[J].林产化学与工业,2014,(2):23-28,6.基金项目
国家自然科学基金资助项目(31270638) （31270638）
国家重大基础研究课题(2013CB228101) （2013CB228101）
