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1 At a reaction temperature of 100 ℃ and a reaction time of 30 min to give 2,which was then subjected to condensation reaction with p-propoxy mandelic acid in the presence of phosphoric acid at a molar ratio of m(2)∶m( p-propoxy mandelic acid )∶m=1∶1∶1 at a reaction temperature of 60 ℃ for 3 h to yield 3,which was further oxidized by chloranil to give t.

对现有分散红356合成工艺进行了优化,以n∶n=1.2∶1投料,100℃反应30 min得缩合物2,再在等质量磷酸催化下与分批加入的等质量对丙氧基扁桃酸60℃缩合3 h得缩合物3,经温和氧化剂四氯苯醌氧化得标题化合物,总收率55%。

The effect of pH and chloride on the spectra were also discussed.

最后就溶液中的酸、碱度及氯离子浓度对其谱图的影响进行了讨论。

Catalytic activities of phosphotungstic acid for liquid-phase nitrations of benzene,toluene and chlorobenzene were studied.

研究了磷钨酸对苯、甲苯和氯苯液相硝化反应的催化活性,考察了反应温度、反应时间、硝酸与芳烃摩尔比对芳烃转化率和产物选择性的影响。

With the catalyst TiO2/SO(superscript 2- subscript 4), 2, 4, N-trinitroanilinoacetic acid was synthesized from chlorobenzene and glycine with yield of 71.6%.

以纳米固体酸TiO2/SO(上标 2-下标 4)为催化剂,氯苯和氨基乙酸为原料直接合成了2,4,N-三硝基苯胺基乙酸,收率为71.6%。

This technique pro-duced not only N-phosphonomethyliminodiacetic acid with high quality but also a great deal of chloromethane by the hydrolyzation of dimethyl phosphite and methylal .

提供了一种利用亚磷酸二甲酯残液(亚磷酸二甲酯生产过程中的副产)和甲缩醛(甘氨酸法生产草甘膦过程中的副产)为原料来合成双甘膦的方法,采用该工艺可以合成高含量的双甘膦,而且利用亚磷酸二甲酯残液和甲缩醛的充分水解可生成大量的氯甲烷,从而大大提高上述副产物的综合利用价值,具有很好的发展前景。

Alkylations of benzene with dodecene and/or chloromethane in the room temperature ionic liquid 1-methyl-3-butylimdazole chloride-aluminium chloride as catalyst have been investigated with high conversion and selectivity.

首次研究了在氯铝酸室温离子液体系中二甲苯与苯乙烯的烷基化反应制1-苯基1-二甲苯基乙烷及其衍生物。考察了离子液体催化剂量和反应条件的不同对产物组成及副产物数量的影响。

this study focused on the effect of chorine on the fermentation products of amycolatopsis orientalis.

本文研究了氯离子对东方拟无枝酸菌发酵产物的影响。

The round trip flow time is cut short from two hours to ten minutes and the method adopts silver nitrate-bismuth nitrate united screening method to eliminate the disturb of chorine ion instead of strenuous noxious mercury sulfuric.

本方法适当提高硫酸浓度,强化了重铬酸钾的氧化效率,使回流时间由 2h缩短到 10min ;并且用硝酸银和硝酸铋联合掩蔽法能消除氯离子的干扰,代替剧毒的硫酸汞。

Because of specificity and high efficiency, the catalytic efficiency of cellulase is high(more 103~1013 times than general catalysts), the condition of catalytic reaction is mild and the catalytic activation can be adjusted and controlled, which can improve remarkably semblance and handle of fabrics during finishing fabrics by biological catalyzing, moreover cellulase can replace some chemical materials such as acid, cocain, chlorine and phosphorus etc, so as to decrease pollution, make no waste-water and protect environment.

由于酶具有专一性和高效性,采用生物催化,其催化效率高比一般催化剂高10~3~10~(13倍,催化反应条件温和,催化活性可调节控制,应用在纺织品处理上,能显著改善织物的外观和手感,并能取代一部分酸、碱、氯、磷化合物等化工原料,从而减少污染,不产生污水,有利于环保和生态。而且酶本身又无毒,容易生物降解,不会引起环境污染,所以酶处理已被公认为是一种符合环保要求的绿色印染加工方法。本文选用了市场上常用的纤维素酶R-10和纤维素酶ECS2610两种生物酶。

The differences of electric mechanism, phase behavior and high temperature stability of cyhalothrin drug-loading microemulsion were investigated when the dodecyl benzenesulfonic salts combined with five coherer counter-ions and polyoxyethylene styrenyl ether were mixed at the same molar ratio.

将十二烷基苯磺酸盐和苯乙烯化苯酚聚氧乙烯醚按摩尔比1∶1混合后,结合5种金属反离子配成增溶高效氯氟氰菊酯的载药微乳体系,研究其在导电机理、相行为及热贮稳定性上的差异。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。