置换反应

通过热力学计算表明，置换反应速度随镀液浓度的增大和温度的升高而增大。

Thermodynamic calculations clarify that the substitution reaction is accelerated by the rise in concentration and temperature of plating solution .

用金属Mg、C2Cl6和AlCl3作原料，以苯为溶剂，在200℃下通过催化置换反应12小时，生成碳纳米管。

Carbon nanotubes were synthesized via a catalyzed replacement reaction at 200 ° C for 12h using metallic Mg , C_2Cl_6 and AlCl_3 as starting materials and benzene as solvent .

利用FLASHMX制作化学置换反应演示课件

Doing the Demonstrational Courseware of the Displacement Reaction in Chemistry with Flash MX

上述两个阶段的热力学分析，说明在熔盐环境下镁合金表面置换反应的自发性和Al元素扩散的持续性。

The two-stage thermodynamic analysis shows that the displacement reactions spontaneously occur and Al element continually diffuse in the molten salt bath on the magnesium alloy .

基于动力学数据，建立了SDS体系置换反应过程中CH4水合物的分解动力学模型和CO2水合物的生成动力学模型。

Based on the rate data , kinetic models were developed for CH4 hydrate decomposition and CO2 hydrate formation .

当氧化还原金属置换反应结束后，片状的Ag纳米粒子和颗粒状的Cu纳米粒子主要沉积在树叶状Co的脉络和边缘部分。

Plate-like Ag and granule-like Cu nanoparticles are mainly deposited at the venations and edges of the Co radial microstructures , when the displacement reaction is finished .

介绍了利用FLASHMX制作化学置换反应演示课件的过程与效果。

The paper introduces the process and effect of doing the demonstrational courseware of the displacement reaction in chemistry with Flash MX .

采用圆二色性（CD）光谱法和紫外（UV）吸收光谱法研究金属硫蛋白结合铅离子的竞争反应和置换反应。

By using Circular Dichroism ( CD ) spectroscopy method and Ultraviolet ( UV ) absorption spectrophotometry , competition reaction and replacement reaction of metallothioneins with lead ion were investigated .

试验结果表明.经过预镀镍处理后，铝表面可获得镍沉积的催化表面.有效防止了在化学镀Ni－P槽液中置换反应的发生。

The experiment result shows that after the nickel preplating treatment a catalysis surface will be formed , and this catalysis surface will prevent the replacement reaction to take place effectively in the electroless Ni-P plating bath sloution .

根据CNTs的这些优点，我们发展了一种基于CNTs作为标记物，通过链置换反应检测特定DNA序列的电化学生物传感技术。

Based on these advantages , we developed an electrochemical strategy based on strand displacement reaction coupling with the CNTs as electrochemical labels for the detection of the specific sequence DNA .

在有机介质十氢化萘中，以金属钠、硝酸银和油酸钠为起始原料，通过超声辐射使金属钠和硝酸银发生置换反应，成功制备了油酸表面修饰的Ag纳米微粒。

The silver nanoparticles modified by oleic acid were successfully synthesized by the replacement reaction of silver nitrate with metal sodium in decalin , and the reaction was achieved via ultrasonic irradiation .

第二步置换反应，98%硫酸50mL；

In the second step , displacement reaction : sulfuric acid ( 98 % ) 50 mL ;

如取向性附生（orientedattachment/aggregation，OA）生长机制、介观转变、以及最近我们课题组在置换反应中观察到了非晶作为过渡相的双界面晶体生长模式等。

For example , the oriented attachment mechanism , the mesoscopic transformation , and the double interface growth mode reported by our group recently where the amorphous cluster plays as transient phase during the crystal growth .

本文考察了此高支化度银纳米结构的SERS性能，并且以此结构为模板，通过置换反应制备了具有空心结构的Ag/Au合金海藻状纳米结构。

SERS property of the silver branched nanostructures was examined and hollow Ag / Au alloy branched nanostructures were prepared through galvanic replacement reaction based on silver template .

在硫酸铵介质中，金属锰与水的置换反应属扩散控制，反应的表观活化能为17.46kJ/mol；

The reaction was controlled by diffusion with apparent activation energy of 17.46kJ/mol .

对尿素与硫酸二甲酯的缩合反应、缩合液与NaOH的置换反应以及游离的O-甲基异脲与醋酸、正-十二胺的合成反应做了系统的研究。

We carried out a systematic study on the condensation reaction of urea and dimethyl sulfate , the displacement reaction of condensation liquid and NaOH and the synthetic reaction of the free O-methyl isobutyl , urea acetic acid and dodecylamine .

计算得到CH4-CO2置换反应过程中CH4水合物的分解活化能为28.81kJ.mol-1，CO2水合物的生成活化能为68.40kJ。

In the process of CH4-CO2 replacement in the hydrate , the activation energies were , calculated 28.81 kJ · mol-1 for CH4 hydrate decomposition and 68.40 kJ · mol-1 for CO2 hydrate formation respectively .

结果表明：选择合适的激光处理工艺，可使Cr3C2和Ti合金粉末通过原位结晶置换反应生成TiC/Ti复合材料熔覆层；

The results show that laser induced melting is helpful for the formation of this kind of composite coating provided a suitable sets of processing parameters and the ratio of Cr 3C 2 to Ti are selected .

当使用含有BiCl3松香型助焊剂钎焊Sn-9Zn钎料时，BiCl3会与液态钎料表面的Zn发生置换反应，生成单质Bi。

When the rosin based flux containing BiCl_3 is used in soldering process , BiCl_3 can react with Zn in the molten solder and the product were ZnCl_2 and Bi . Bi can enrich on the surface of molten solder .

微波辐射下插层时间为30min时，插层率即可达到75%以上，置换反应50min，置换率达到77%以上。

After 30 minutes of reaction , the intercalation rate reached 75 % . The displacement rate of acrylamide reached above 77 % after 50 minutes of irradiation .

采用置换反应法制备铜银双金属粉，使用EDTA代替氨水作Ag+的络合剂，并螯合分散Cu2+，一次性制备了具有常温抗氧化性能的铜银双金属粉。

The Cu-Ag bimetallic powder prepared with substitutional reaction method has antioxidation behavior at the room temperature . In the process , EDTA used as complexing agent instead of amine solution to chelated Ag ~ + , and chelated Cu ~ 2 + to disperse it .

在真空环境下，首次利用固态化学置换反应制备了K（TCNQ）薄膜，其分子结构与已报道过的K（TCNQ）单晶、多晶相同。

The K ( TCNQ ) thin film was prepared by a method of solid chemical replacement reaction in vacuum . The molecular structure obtained in K ( TCNQ ) thin film is the same as that in K ( TCNQ ) single crystal and polycrystalline solids .

研究结果表明：Na2S活化菱锌矿的机理为S2-与菱锌矿矿粒中的CO23-发生置换反应，生成了疏水的ZnS薄膜层，促进了捕收剂的吸附；

The results show that the mechanism of Na_2S ' activating smithsonite is surface replacement of S ~ ( 2 - ) and CO ~ ( 2 - ) _3 that in smithsonite particles and hydrophobic ZnS thin-film layer is formed . The absorption of collecting agent is promoted .

体系的置换反应机理符合扩散控制机理。

The precipitating reaction of the system is controlled by diffusion .

金属硫蛋白结合铅离子的竞争反应和置换反应研究

Study on Competition Reaction and Replacement Reaction of Metallothioneins with Lead Ion

浅谈中学化学中的置换反应

Metathesis Reaction in Secondary School Chemistry Teach in g

用碱金属氯化物与金属钙的置换反应来制备碱金属光电阴极，在通常条件下是不能自发进行的。

Generally , the spontaneous displacement reaction of alkali metals with calcium is impossible .

固态置换反应的界面稳定性

Interface stability analysis of solid state displacement reaction

高碳烷基铝置换反应及新冷凝技术的应用

The Displacement Reaction of High Alkylaluminium Compounds and Apply of a New Cooling Technology

有机声化学反应发现微波能加快插层和置换反应，极大地缩短反应时间。

The result shows that the microwave energy can accelerate intercalation and displacement reactions .