摘要
采用低温热解脱氧方法对低煤化度煤中含氧官能团化学活性进行了系列研究，测定了ＦＴＩＲ、１Ｈ－ＮＭＲ、１３Ｃ－ＮＭＲ及比表面积和孔径分布。得出了煤中含氧官能团的化学活性顺序，并发现低温热解脱氧的同时，煤分子中的Ｏ重新分布，Ｈ分布、Ｃ分布及孔径分布的变化。
The chemical activity of oxygen functional group of low rank coal and its modification mechanism of deoxy treatment by pyrolysis at low temperature ( T<T d) has been investigated in detail using FTIR, 1H-NMR and 13C CP MAS NMR, and nitrogen adsorption The order of chemical activity of oxygen functional group in coal was obtained It was found that the redistribution of the oxygen in coals was strongly influenced by treatment conditions, while little change for sulfur and nitrogen The distribution of hydrogen, carbon and porosimetry of the coal molecule were also changed along with the deoxidization It is suggested that the chemical structure and framework construction of the coal molecule be changed, which leads to modification of coal
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1999年第3期256-261,共6页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金
关键词
热解
低温热解
含氧官能团
煤
结构
低煤化度煤
low temperature pyrolysis, oxygen functional group, coal structure
