溴素

PVDF应对溴素腐蚀

PVDF Tackles Bromine Corrosion

以苯胺、环氧丙烷和溴素为原料，合成了N，N二（2羟丙基）2,4,6三溴苯胺（BHTBA）。

Tribromo-N , N-bis ( 2-hydroxylprapylene ) aniline ( BHTBA ) was prepared from aniline , propylene oxide and bromine .

焦脱镁叶绿酸a甲酯与溴素的亲电反应表明：在3位乙烯基上发生亲电加成反应，而与20位的meso氢则发生亲电取代反应。

The electrophilic reaction of methyl pyropheophorbide-a ( MPP-a ) demonstrates that the electrophilic addition reaction and the electrophilic substitution reaction occur on the vinyl group at 3-position and 20-meso-position , respectively .

在溴素与中间产品摩尔比1.3：1、温度55-60℃、时间6h条件下，最终产品2,3-二溴丁二酸二（2,3-二溴丙）酯产率达90%以上。

The yield of final product 2,3 - dibromodi ( 2,3 - dibromopropyl ) succinate was over 90 % when the molar ratio of bromine to intermediate was 1.3:1 at 55-60 ℃ for reaction time of 6 hours .

亚硫酸钠还原-离子色谱法测定溴素中的游离氯

Determination of Free Chlorine in Bromine with Sodium Sulfite by Ion Chromatography

溴素生产应用现状分析及展望

Analysis and Prospects for Present Status of Production and Utilization of Bromine

作业场所空气中溴素的甲基红褪色分光光度测定法

Determination of bromine in workplace air with spectrophotometry of methyl red fading reaction

新型溴素生产物料远程自动监控系统

A new remote automatic monitoring-control system applicable to the industrial material of bromine production

目前国内各溴素生产厂的生产过程均是在人工直接参与下，凭经验进行手工调节，调节手段落后。

At present the productive process of each bromine production factory is adjusted in hand .

溴素的有机化学Ⅳ.单取代苯甲酸多溴代芳酯的合成

Organic chemistry of bromine ⅳ . synthesis of polybrominated aromatic esters of monosubstituted benzoic acid

溴素的有机化学Ⅵ.多溴代邻羟基苯甲酸2,3,5,6四溴1,4苯二酯的合成

Organic chemistry of bromine ⅵ . synthesis of polybrominated o-hydroxy benzoate of 2,3,5,6 tetrabromo 1,4 dihydroxybenzene

盐酸氨溴素及地塞米松对脂多糖诱导大鼠急性肺损伤炎性细胞信号转导影响的实验研究

The Effects of Ambroxol and Dexamethasone to Inflammatory Signal Transduction in Lipopolysaccharide-Induced Acute Lung Injury in Rats

研究表明，光线条件对溴素与乙炔加成反应过程有非常明显的影响。

Results show that the addition reaction of bromine with acetylene was obviously influenced by light condition .

溴素的有机化学Ⅶ.2,2双（溴甲基）1,3丙二醇和多溴代酚的环状磷酸酯的合成

Organic chemistry of bromine ⅶ synthesis on cyclic phosphates of 2,2-bis ( bromomethyl ) - 1,3-propanediol with polybrominated phenol

以溴苯、镁粉、三氯化锑、溴素为原料，合成了二溴三苯基锑阻燃剂。

Bromobenzene , magnesium , antimony trichloride and bromine act as raw materials , dibromotriphenylantimony flame retardant is synthesized .

以浓海水（卤水）为原料的空气吹出法制溴素工艺已在国内外广泛使用。

The bromine extraction processes by air blow-out method from seawater and brine have been widely used at home and abroad .

用薄层色谱法监测溴素溴化乙酰丙酸乙酯生成3-溴乙酰丙酸乙酯的反应过程，优化了反应条件，方法简单，快速，准确。

A simple TLC method for monitoring the synthetic process of 3-bromo-ethyl levulinate is reported , and the reaction condition is optimized .

介绍了用溴素、碳酸锂、尿素为原料，制备溴化锂的新工艺。

The article introduces the new proces in preparation of lithium bromide using bromine , lithium carbonate and urea as raw material .

在三氯化铝的催化作用下，联苯在过量无水溴素中能够顺利实现全环溴化，收率可达98%；

In presence of catalyst AICI_3 , the complete bromination of biphenyl in excess bromine can be achieved easily , and the yield of 98 % is obtained .

海水中溴的浓度过低限制了直接采用现有生产技术制备溴素，因此，需要通过吸附方法对海水的溴进行浓缩。

Direct bromine production by present manufacturing techniques is limited by the lower Br - concentration of seawater , so it is necessary to pre-concentrate Br - from seawater by adsorption .

溴素生产过程中配氯比的测量，以双电极作为传感器，其氧化电位测量采用一个与参比电极相通的容器。

The double electric poles were taken as the sensor by chlorine-rate measurement in bromine producing process . A container that connected with added ratio electric pole was adopted by oxygenation-voltage measurement .

氯碱企业采取节水措施，引进海水淡化新技术，联产包括溴素在内的化工产品，提高综合经济效益。

Chlor-alkali enterprises should take water-saving measures , import the new technology of sea water desalination and simultaneously produce some chemicals , such as bromine , to increase the overall economic efficiency .

介绍了新型溴素生产物料远程自动监控系统的构成、工作原理、技术特点、化学测量方法、自动控制方案和应用效果。

This paper gives an introduction about a new remote automatic monitoring-control system including its structure , working principle , technical features , chemical measurement method , automatic control plan and application effect .

以2-乙酰基苯并咪唑和溴化钠为原料，在光照条件下用氯气置换出溴化钠中的溴素，合成兽药噻苯咪唑中间体-2-（二溴乙酰基）-苯并咪唑氢溴酸盐。

Using 2-acetyl benzimidazole and sodium bromide as raw material , 2 - ( dibromine acetyl ) - benzimidazole hydrobromate was synthesized with the new bromine that displaced by chlorine gas in light .

结果表明：三种吸附剂对海水Br-有一定的吸附作用，其中负载硝酸镧的改性壳聚糖微球对海水Br-的吸附效果最好，在浓缩海水溴素方面，展现出一定的应用前景。

The results have showed that : all the three kinds of adsorbents manifest sorption of Br - , especially lanthanum-modified chitosan beads , which behaves the best adsorption effect , and exhibits application foreground .

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 .

该法与现采用的直接加溴素法比较，生产成本较低，操作方便，工业三废较少，收率可达91.8%，具有较大的工业应用价值。

Comparing with the old method & directly adding bromine , the cost of this method was lower , the operation was convenience , industrial three-wastes produced less , the yield rate was 91.8 % . It had a tremendous application value in industry .

本文详尽地阐述了用溴素、碳酸锂、尿素为原料生产溴化锂的新工艺&尿素还原法的化学反应原理、生产工艺过程、操作方法及其注意事项。

This artic ■ e covers in detail about the new process for producing lithium bromide using bromide , lithium carbonate and urea as feedstocks and the chemical reaction principle , productive process , operating method and points for attention of the urea reduction method .