1) selective nitration
选择性硝化
1.
The rate of selective nitration of acetanilide with mixed acid is studied with the help of Uv-Vis spectra.
采用紫外—可见（Uv－Vis）光谱研究了乙酰苯胺混酸选择性硝化反应速度，推断乙酰苯胺混酸硝化是二级反应，测得在81％硫酸中硝化的二级反应速度常数为3。
2.
In this thesis, 3,4-xylidine which is an important organic intermediates widely applied in pharmacy, pesticide, and dye industries, has been prepared by selective nitration and catalytic hydrogenatuion in low pressure, using o-xylene as start material.
本论文以邻二甲苯为起始物，采用选择性硝化制3，4-二甲基硝基苯和低压液相催化氢化制备3，4-二甲基苯胺。
3.
The process produces huge amounts of wastes along with a large amount of undesired o-MNT due to the nonselective nitration of toluene.
甲苯硝化是非常重要的精细有机合成反应,将固体酸和酸性离子液体催化剂应用于芳烃的选择性硝化,是正在兴起的绿色化学合成技术之一。
2) regioselective nitration
选择性硝化
1.
Preparation,characterization of nanosolid superacid TiO_2/SO_4~(2-) and regioselective nitration of toluene by catalysis;
纳米固体超强酸TiO_2/SO_4~(2-)的制备及其催化甲苯选择性硝化
2.
Regioselective nitration of chlorobenzene with mixed acid have been investigated.
研究了在硝酸—硫酸—磷酸体系中氯苯的选择性硝化反应,实验表明,80℃时,在适当比例的硝酸—硫酸—磷酸体系中,氯苯—硝化产物中邻对比可达0。
3) regioselective nitration
区域选择性硝化
1.
The catalytic performance for o-trifluoromethoxyaniline regioselective nitration was investigated under various conditions.
采用直接合成法制备出由MCM-41介孔分子筛负载SO3H的催化剂,测定了催化剂表面的酸中心组成,并考察了不同工艺条件下邻三氟甲氧基苯胺区域选择性硝化的催化性能。
4) the selective catalytic denitrification process
选择性催化脱硝
1.
Practice and study of the selective catalytic denitrification process in coal-fired power plant;
燃煤电厂选择性催化脱硝工艺的实践与探讨
补充资料：连续性与非连续性(见间断性与不间断性)
连续性与非连续性(见间断性与不间断性)
continuity and discontinuity
11an父ux泊g四f“山。麻以角g、.连续性与非连续性(c。nt，n琳t:nuity一)_见间断性与不间断性。and diseo红ti-
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条