摘要
采用化学法和波谱分析法对泥炭、褐煤、风化煤腐植酸（ＨＡ）与尿素的相互作用机理进行了研究。结果表明，ＨＡ与尿素之间发生了极其复杂的反应，包括离子化、络合配位、亲核加成、自由基反应及氢键缔合等，形成不同的化学键。羧基对反应深度的影响最大；含官能团（特别是羧基）最多的风化煤ＨＡ反应性最高。
The mechanism of interaction between urea and humic acid (HA)
from peat, lignite and weathered coal were studied by IR, ESR, XPS spectra and chemical
methods It was observed that very complex reactions including ionization, coordination,
carbonyl addition, free radicals reactions and H-bond association etc took place between urea
and HA, forming the various chemical bonds The carbonxylic groups in HA may play an
important role in the reactions Weathered coal HA containing more functional groups has higher
reactivity on urea The investigation provided scientific basis for preparation of the organic
long-term urea
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1999年第2期176-181,共6页
Journal of Fuel Chemistry and Technology
