溴乙烷

改变工艺条件，添加适当助剂后，以溴、硫、乙醇为原料生产溴乙烷的方法得到显著改善。

The manufacture process of bromoethane from bromine , sulfur and ethyl alcohol as starting material is improved significantly by modifying synthetic conditions and adding a suitable additive agent .

~20托溴乙烷或碘乙烷用TEACO2激光辐照，其产物用红外光谱、气相色谱和CWCO2激光光声光谱检测。

Ethyl bromide or iodide at 20 torr was irradiated by a TEA CO2 laser . The reaction products were identified by means of infrared spectrometry , gas chromatography and CW CO2 laser photoacoustic spectroscopy .

溴乙烷部分季胺盐化聚4－乙烯基吡啶EBQB4VP－Cu（Ⅱ）络合物在乙醇－水混合溶剂中时，其链构象因溶剂组成而异。

The chain conformation of Cu (ⅱ) complex of poly ( 4 vinylpyridine ) partially quaternized by ethyl bromide ( EBQP4VP ) in ethanol water mixture is dependent on the solvent composition .

通过稳定试验和空白试验的色度和pH值对比及色谱分析证明：微量稳定剂就能使四溴乙烷在常温下稳定两年。

Through GC analysis and the comparison of the APHA color and pH values for stability tests and blank tests , it has been proved that a little of stabilizer can keep the 1,1,2,2-tetrabromoethane steady for two years at ordinary temperature .

利用单色双光子（1C2P）技术得到了高精度的溴乙烷分子的质量分辨阈值（MATI）光谱，精确给出了溴乙烷分子的绝热电离势和离子振动频率。

Using one-color two-photon ( 1C2P ) scheme , high-resolution mass analyzed threshold ionization MATI spectra of ethyl bromide have been recorded .

另外也发现压力对于三氟氯溴乙烷从纯水溶入DMPC的自由能改变所造成的影响很小，且对于三氟氯溴乙烷的偏好区域没有可观的影响。

It is also found that pressure has no detectable effect on the free-energy change of inserting a halothane from bulk water to DMPC , and does not change the regional preference of halothane , either .

固体酸催化合成溴乙烷新工艺

New Process of Ethyl Bromide Synthesis with Solid Super acid Catalyst

方法以溴乙烷替代碘甲烷进行烷基化反应。

METHODS By this method , iodomethane was replaced with bromoethane .

初步分析了光线照射影响四溴乙烷合成反应的作用机理。

The mechanism of light influencing the addition reaction was also studied .

对实验室合成溴乙烷的方法和步骤进行讨论。

The synthesis method and process have been discussed .

溴乙烷分子的质量分辨阈值光谱

Mass analyzed threshold ionization spectra of ethyl bromide

主要研究了光线照射对四溴乙烷合成过程的影响。

The effect of light on the synthesis of tetrabromoethan was studied in this paper .

以溴乙烷和丙二酸二乙酯为原料合成2-乙基丙二酸二乙酯，收率为90.4%。

2-ethyl diethyl malonate was synthesized from diethyl malonate and bromoethane in 90.4 % yield .

研究了苯乙烯在不同浓度溴乙烷溶液中，－78℃γ－射线辐射聚合。

The Polymerization of styrene under γ - irradiation at-78 ℃ in ethyl bro - mide solution at different concentration was investigated .

研究了β-萘酚与溴乙烷在聚乙二醇存在下的反应。

β - Naphthol ethyl ether was prepared by the reaction of β - naphthol with bromic ether in the presence of polyethylene glycol .

以半微量法代替常量法，用溴乙烷代替碘乙烷与苯酚钠反应制取苯乙醚。

With half-trace law instead of constant law , bromine ethane not iodine ethane reacts to carbolic acid sodium in order to make benzene ether .

制备了交联聚4-乙烯基吡啶及碘甲烷，溴乙烷季铵化的聚4-乙烯基吡啶负载钯催化剂，考察了它们催化丙烯酸甲酯加氢反应的性能。

Crosslinked poly-4-vinylpyridine quaternized with methyl iodide , ethyl bromide has been prepared and the quaternary salts have been used for the support of the Pd catalyst .

通过气相色谱仪和气相色谱-质谱联用仪确定了某制药厂用回收的溴化钠生产的溴乙烷中所含杂质的具体成分及其含量。

The content and ingredient as well as origins of impurity in bromoethane made from dregs of bromine at a pharmaceutical manufacturer was analysed through GC and GC-MS.

用密度泛函理论考察了甲基咪唑和一系列的卤代烷烃（氯乙烷，氯丁烷，溴乙烷，溴丁烷）反应合成咪唑类离子液体的反应机理。

The reaction mechanisms of 1-methylimidazole with a number of alkyl halides including ethyl chloride , butyl chloride , ethyl bromide and butyl bromide were determined using density-functional theory ( DFT ) .

在溴乙烷中，－20℃到－78℃温度范围内共聚时，阳离子、自由基历程并存，并随着温度降低阳离子聚合逐渐占优势。

When copolymerization is carried out in ethyl bromide solution at-20 ℃ to-78 ℃, cationic and free radical mechanisms exist simultaneou - sly ; by further lowering reaction temperature , cationic mechanism becomes predominant .

溴乙烷分子的单色双光子质量分辨阈值光谱展现出丰富的振动结构，这是在溴乙烷分子相继吸收两个光子的过程中波包在解离态势能面上演化的结果。

The spectra showed extensive excited vibrational structure as a result of wave packet evolving on the potential energy surface of the dissociative state in the time interval between the absorption of the two photons .

同时，增加光照可使溴素与乙炔的加成反应进行得更加完全，从而降低副产物生成量，提高溴素的转化率和四溴乙烷收率。

In the meantime , the extent of addition reaction , conversion rate of bromine and the yield coefficient of tetrabromoethan were increased , and the yield of by-product was decreased by using of light .

提出了以麦芽酚生产中的废渣&碱式溴化镁为主要原料，生产四溴乙烷，轻质氧化镁和氯化铵的基本原理、工艺过程和主要工艺条件，并估算了成本。

The paper put foward the basic principle , technological process and conditions that product the tetrabromoethane , light magnesium oxide and ammonium chloride taking the waste residue from processing the maltol & the basic magnesium bromide as raw material . The production cost was estimated .

结果表明，在β-萘酚与溴乙烷的摩尔比为1∶1，反应时间1.7h，β-萘乙醚的产率达95.4%。

On yield of β - naphthol ethyl ether was carefully studied . When the molar ratio of β - naphthol to bromic ether was 1 ∶ 1 and the reaction time was 1.7 h , the yield of β - naphthol ethyl ether was 95.4 % .