羰基的

Results indicate that if the carbon doublebond and carbonylcompounds were added into the surfactant molecule,the emulsification properties such as emulsifiability foaming property and foam stability will improve a lot.

实验分析表明，在表面活性剂分子中加入双键和羰基，会使得由此制得的乳化剂的乳化力、起泡性与稳泡性等性能都有良好的改善。

The efficient first asymmetric syntheses of-6β-hydroxy-7αH-eudesm-4-en-3-one, and its C-6 epimer were achieved starting from-dihydrocarvone, whichprovide a novel and efficient synthetic method to 6-oxgenated eudesmanes.

以-二氢香芹酮为原料，经五步反应，首次完成了6β-羟基-4(5)-烯-3-羰基桉烷及其6位差向异构体的立体选择合成，并为C-6位含氧官能团取代桉烷类化合物的合成提供了一种简便有效的方法。

The method is realized by that polyether ether ketone is added into concentrated sulfuric acid to carry out sulfonation reaction, thereby obtaining sulfonated polyether ether ketone, then the sulfonated polyether ether ketone is dissolved in organic solvent, N, N (1)-Carbonyldiimidazole is added to stir for one to three hours, coupling agent is mixed for stirring the reaction for 1.5 to 4 hours, then inorganic crosslinking agent is mixed to react under the temperature of 50 to 80 DEG C. Proton conductors are mixed to continue getting the mixed solution of the sulfonated polyether ether ketone or the inorganic crosslinking agent or proton conductors under the temperature. Finally the proton exchange membrane for a direct methanol fuel cell is obtained by that the mixed solution of the sulfonated polyether ether ketone or the inorganic crosslinking agent or proton conductors is/are processed through membrane forming, drying and exuviation.

该方法首先将聚醚醚酮加入浓硫酸中进行磺化反应得到磺化聚醚醚酮；然后将磺化聚醚醚酮溶于有机溶剂中，加入N，N′-羰基二咪唑搅拌1～3小时后加入偶联剂搅拌反应1.5～4小时，再加入无机交联剂在50～80℃下反应，然后加入质子导体继续在此温度下反应得到磺化聚醚醚酮/无机交联剂/质子导体的混合溶液；最后将磺化聚醚醚酮/无机交联剂/质子导体的混合物溶液成膜，干燥，脱膜即得到所述的直接甲醇燃料电池用质子交换膜。

An alternative way of the synthesis of methanol from syngas is low-temperature methanol synthesis via methyl formate in liquid phase, namely, carbonylation of methanol in the first step, and hydrogenolysis of methyl formate in the second step.

低温液相甲醇合成是指在（80-160℃）范围内，甲醇首先与合成气中的CO发生羰基化反应生成甲酸甲酯，甲酸甲酯再氢解生成甲醇的两个反应在一个反应器内串联进行的方法。

The synthetic technology and production and application of MF at home and abroad are summarized in this paper.

本文全面综述了国内外甲酸甲酯的开发和生产情况，重点阐述了甲醇羰基化法，甲醇脱氢法，合成气直接合成法三种甲酸甲酯合成技术最新的开发状况，并指出了甲酸甲酯的应用前景。

Stilbene, dibenzene methane and non-phenolic 5-5' type substructures in lignin were stable to LMS treatment, and difficult to be degraded.

LMS处理时木素发生α-位羟基的氧化产生α-羰基，并在其后的碱处理段被降解成小分子量的碎片。

This article narrates the transformation of carbonyl group in optically active epoxy ketones under different reagents and enumerates some synthetic applications of this kind of transformation.

本文讲述了有机合成中光学活性的环氧酮化合物中酮羰基在不同试剂下的转化，并列举了一些相关的合成应用。

This article narrates the transformation of carbonyl group in optically active epoxy ketone s under different reagents and enumerates some synthetic applications of this kind of transformation.

本文讲述了有机合成中光学活性的环氧酮化合物中酮羰基在不同试剂下的转化，并列举了一些相关的合成应用。

The spiked recoveries of glyoxal and glyoxalic acid were 99.6%~103.3% and 98.1%~102.4%, respectively.

所建立的方法为醛及二羰基化合物的测定提供了准确、便捷的方法。

We studied reactions of sulphoxide with aliphatic and aromatic 1,3-dicarbonyl compounds promoted by Cu2·H2O, 2,2′-biimidazole and iodobenzene diacetate, with the presence of K2CO3 as a base and DMSO a solvent.

我们以K2CO3作为碱，DMSO作为反应的溶剂，在二醋酸碘苯、Cu2·H2O、2，2′-联咪唑体系中，对脂肪族和芳香族的1，3-二羰基化合物和亚砜的反应进行了研究。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。