, the lignin structure of it was analysed by nitrobenzene oxidation, and the residual lignins in unbleached pulp by KP and AS-AQ were extracted, the residual lignins were analysed by FT-IR and I3C-NMR, the results indicated that triploid clones Populus tomentosa Carr.
用硝基苯氧化法分析了三倍体毛白杨的木素单元结构,并对三倍体毛白杨进行了硫酸盐法和碱性亚钠-蒽醌法制浆,提取了两种未漂浆的浆中残留木素,用红外光谱和13C-NMR详细分析了其结构,研究结果表明:和普通毛白杨相此,三倍体毛白杨木素缩合型结构的比例较高;和硫酸盐法制浆相比,碱性亚钠-蒽醌法制得的浆中含有较少的木素缩合结构和木素-碳水化合物复合体(LCC),羧基含量较低。
The graft site was studied by comparing the phenolic contents, yields of alkaline nitrobenzene oxidation products of lignosulfonates, model compounds and their copolymers.
通过比较木素磺酸盐和模型物接枝前后酚羟基的含量和碱性硝基苯氧化产物得率的变化,对接枝反应位置进行了研究。
Crystal Structure of 4- Chloro-3 , 5-Dinitro-Tert - Butylbenzene;
4-氯-3,5-二硝基-叔丁基苯的晶体结构
Synthesis of 4,4, 7, 7-Tetranitro-D_3-Trishomocubane;
4，4，7，7－四硝基－D_3－三高立方烷的合成
Synthesis of 2,4-Dinitro-and Dicyano-Homocubanes;
2，4－二硝基和二氰基高立方烷的合成
The experimental result is discussed in detail and it is proved that the nitro group in raw material cannot be reduced into amino group entirely.
在温和条件下，α－（邻硝基苯甲酰基）环己酮经催化氢化合成了９－羟基－１，２，３，４－四氢吖啶－Ｎ－氧化物。