水合肼
- 网络Hydrazine Hydrate
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这里,在控制剂存在下,用水合肼作还原剂还原Bi(NO3)3,已选择性合成了铋纳米球,铋纳米棒等,通过调节反应参数也成功获得了铋纳米管。
Here , The dissertation demonstrated a work for selective preparation of bismuth nanospheres and nanorods reduced by hydrazine hydrate in the presence of controlling agent , Bismuth nanotubes could be also obtained by changing some reaction parameters .
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在实验中可以通过调节水合肼和蒸馏水的体积比,实现产物物相和形貌的控制合成。
The phase - and shape-controlled synthesis has been realized by tuning the volume ratio of hydrazine hydrate and distilled water .
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锌粉-卤化铵还原体系用于N,N′-二苯肼的合成葡萄糖预还原-水合肼液相法制备纳米铜粉
Preparation of Nanometer Copper Powder Used Glucose Pre-reduction and Hydration Hydrazine Liquid Phase Method
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基于BP网络模型的水合肼合成收率预测及参数优化
Analysis of Yield and Optimization of Parameters Based on BP Neural Network for Hydrazine hydrate Synthesis
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采用不同的前驱物,以水合肼为还原剂制备了不同形貌的纳米Cu2O。
The Cu2O nanocrystals of different morphologies were prepared using hydrazine hydrate as the reducing agent .
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FeO(OH)/C催化水合肼还原芳香族硝基化合物制备芳胺
FeO ( OH ) / C-catalyzed Reduction of Aromatic Nitro Compounds to Anilines with Hydrazine Hydrate
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利用水合肼还原GO制备石墨烯,然后采用电化学沉积法制备了铂/石墨烯修饰电极(Pt/graphene)。
The graphene was prepared by reduction of GO with hydrazine hydrate , then the Pt / graphene modified electrode was prepared by electrochemical deposition of Pt on the surface of graphene .
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介绍了我国水合肼和ADC发泡剂的生产现状,预测了这两种产品所需的耗碱量。
Present situation of China 's hydrazine hydrate and ADC blowing agent production is introduced here .
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我国水合肼和ADC发泡剂生产现状及需碱量预测
China 's Present Situation of Hydrazine Hydrate and ADC Blowing Agent Production and Their Need of Alkali
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在表面活性剂聚乙烯吡咯烷酮(PVP)的保护下,采用水合肼于水体系中还原镍盐而得到镍纳米粒子。
Nickel salts were reduced to nickel nanoparticles by hydrazine reduction method in the water system .
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在水溶液中,以FeO(OH)为催化剂,水合肼还原邻硝基苯乙酸得到氧化吲哚。
It was further converted to oxindole through reduction by hydrazine hydrate in water , catalyzed by ( FeO ( OH )) .
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水合肼处理CaCO3中高温净化焚烧烟气的研究
Incineration flue gas scrubbing with hydrazine hydrate treated caco_3 under moderate to high temperatures
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水合肼对NOx的净化效率随着摩尔比NH2/NO、NOx初始浓度的增大而增大;
The efficiency of N_2H_4 reducing NOx increased with the increase of NO initial concentration and mole rate of NH_2 / NO.
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采用松木碳为载体和水合肼为还原剂,通过化学还原沉积法制得Pt/C和PtCr/C催化剂。
The Pt / C and PtCr / C catalysts were prepared by chemical reduction deposition , using pine carbon as support and hydrazine hydrate as reducing agent .
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结果表明:Fe-Al复合催化剂催化水合肼还原硝基的选择性≥99%;
The results showed that the selectivity of the catalytic reaction is over 99 % .
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硫酸羟胺与水合肼对B-Z反应的影响
The Effects of Hydroxylamine Sulfate and Hydrated Hydrazine on the B-Z Reaction
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研究结果表明,水合肼还原法回收海绵铜,在pH值为60,反应温度40℃,水合肼的投加浓度为3%时,铜的回收率达到了98%以上。
The experimental results showed the recovery rate of copper sponge can reach 98 % when pH is 6.0 , reaction temperature is 40 ℃ and the dosage of hydrazine hydrate is 3 % .
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研究工作包括理论和实验两部分。在理论部分,首先对水合肼还原NOx的反应进行了化学热力学和化学动力学计算研究。
In the part of theory study , the law of N_2H_4 reducing NOx was studied by chemical thermodynamics calculation and chemical reaction kinetics calculation .
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在天然高分子表面活性剂的保护下,Ag(NH3)2被水合肼还原得到分散性良+好的不同含银量的复合粉体。
Protected by surfactant , Ag ( NH3 ) 2 was reduced by hydrazine + hydrate , and the composite powder with excellent dispersibility was obtained .
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在水合肼还原,微波照射下,纳米铜颗粒在MIL-101(Cr)孔洞内部迅速成核生成。
Copper nanocrystals were rapid nucleation within the pores of MIL-101 ( Cr ) by hydrazine reduction under microwave irradiation .
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Fe-Al复合催化剂催化水合肼选择性还原硝基制备对氯苯胺
Synthesis of p-Chloroaniline by Selective Reduction of Nitro Group with Hydrazine Hydrate in the Presence of Fe-Al Complex Catalyst
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FeCl3·6H2O/C催化水合肼还原制备2,2-二(4-羟基-3-氨基)苯基丙烷
Synthesis of 2.2-Bis ( 4-hydroxy-3-amido-phenyl ) - propane Catalyzed by the FeCl_3 · 6H_2O / C Catalyst with Hydrazine Hydration
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以硫酸铜和硫酸镍为原料、酒石酸铵为络合剂、NaOH调节pH值、水合肼还原的化学共沉积法,制备了平均粒径为50nm的纳米级镍包铜(Ni/Cu)复合粉末。
The aqueous mixture of copper sulfate and nickel sulfate was reduced by hydrazine directly , with ammonium tartrate being complexing agent , NaOH being pH adjuster .
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化学动力学的计算结果表明,水合肼选择性非催化还原NOx的规律与NH3、尿素相似,都存在着最佳反应温度窗口。
The chemical kinetics calculation results indicate that the law of N_2H_4 reducing NOx is similar with NH3 and urea . They all have best reaction " temperature window " .
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用聚乙烯醇作分散剂,抗坏血酸作还原剂,将氯金酸还原到Au;以水合肼作还原剂,将氯铂酸盐还原到Pt,分别制备了Au粉和Pt粉;
By using polyvinyl alcohol as disperse agent , Au - and Pt powders were prepared respectively by reduction of chlorauric acid to Au with ascorbic acid and reduction of chloroplatinate to Pt with hydrazine .
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结果表明:1)以硫酸铜为铜源,PVP为表面活性剂,水合肼为还原剂,在高浓度(0.1-1.0M)条件下合成了氧化亚铜微球。
The results are as follow : 1 ) Cu2O hollow micro-spheres were synthesized by reducing copper sulfate with hydrazine with polyvinylpyrrolidone ( PVP ) as surfactant at 30 ℃ .
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采用水合肼为水热法,由于水合肼集络合剂、缓释型碱性矿化剂于一身,无需任何其它辅助剂,可低温、快速实现ZnO纳米棒的合成。
In this dissertation , ZnO nanorods were successfully synthesized by the hydrothermal process using hydrazine hydrate as the mineralizer without addition of any other additive . The hydrazine hydrate acted as both complexing agent and alkaline mineralizer .
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采用改进Hummers法制备氧化石墨,再使用氨水、水合肼进行改性和还原,制备出石墨烯。
Then ammonia water and hydrazine hydrate were used for modification and reduction of graphene oxide to graphene .
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介绍了国内外ADC生产技术的现状,包括水合肼生产、联二脲生产、联二脲洗涤、ADC洗涤、离心脱水、干燥、包装7个单元生产过程。
The present situation of ADC production technology at home and abroad is introduced , including hydrazine hydrate production , biurea production , biurea-washing , ADC-washing , centrifugal dehydration , drying and packaging is introduced .
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研究结果表明:(1)次氯酸钠投加量对尿素、水合肼去除效果影响最大,投加系数α为4.29g·g-1时,二者去除率均在95%左右。
The results show that : ( 1 ) The dosage of sodium hypochlorite have the greatest impact on removal rate of urea and hydrazine hydrate .