摘要
以元素分析、凝胶色谱、红外光谱(FTIR)、紫外光谱(UV)等方法对CaLs、CA、SFP三种木质素磺酸盐氧化氨解前后的化学结构进行了研究,并提出了可能的反应机理。结果表明,产品分子量降低,芳环结构部分降解,而氮含量明显升高,碳氮比降低,其中以SFP氮含量增加最多。氮主要是以胺、酰胺、环键合氮等形式存在。
The structure of three kinds of ammoxidative lignosulfonate was studied by elementary analysis、GPC、FTIR and UV et al.. The proper reaction mechanism based on investigation was provided. Results indicated that:molecular weights of products decreased; aromatic structure degraded partly; nitrogen contents increased and C/N ratio decreased. Among three lignins (CaLs、SEP and CA),the nitrogen content of SFP increased, most N mainly exits in amine、amide and cyclic bonded nitrogen et al.
出处
《南京林业大学学报(自然科学版)》
CAS
CSCD
1998年第2期66-70,共5页
Journal of Nanjing Forestry University:Natural Sciences Edition
关键词
工业木质素
氧化氨解
长效缓释氮肥
化学结构
Technical lignin
Ammoxidation
Slow release nitrogenous fertilizer
Chemical Structure