nitrate asphalt

Inhibition of phenol and its derivatives on ammonia nitrification;

苯酚及其衍生物对氨氮生物硝化的抑制研究

Effect of salinity on nitrification process in activated sludge system;

盐度对活性污泥硝化功能的影响

Effect of loading on organic matter removal and nitrification in membrane aeration bioreactor;

负荷对膜曝气生物反应器去除有机物和硝化的影响

Theoretical study on initiated reaction mechanism of nitration of 4-acetyl-1,3-difluorinbenzene;

4-乙酰基-1,3-二氟苯硝化反应机理研究

Synthesis of aromatics nitration catalyzed by solid super acid ZrO_2/SO_4~(2-);

固体超强酸ZrO_2/SO_4~(2-)催化芳烃硝化性能研究

Catalytic para-selective nitration of toluene with NO_2 over zeolite beta;

β沸石对NO_2选择性硝化甲苯的催化性能

4% was described: the disulfuric imidazole salt obtained from the neutralization of imidazole with concentrated sulfuric acid,was nitrated by mixture of sulfuric acid(20%) and nitric acid(98%) under condition of N_2,and then reacted with nitric acid(98%) at 90-95 ℃ for 5-5.

以咪唑为原料,混酸为硝化剂,通氮气条件下,采用正加法、二次加料的方式:先滴加混酸(发烟硫酸20%和硝酸98%),硝化硫酸咪唑盐;再在反应液中滴加硝酸98%反应,合成出4,5-二硝基咪唑。

The effect of the molar ratio of guaiacol/methyl-nitrate,the reaction temperature, the reaction time, the choices of nitrating agent and solvent in the synthesis of 5 -nitro-guaiacol has been studied.

本文研究了愈创木酚／硝酸甲酯的摩尔比、反应温度、反应时间，硝化剂和溶剂的选择对5——硝基愈创木酚合成的影响。