查询词典 acid reaction

The synthesis of diethyl oxalate and oxalic acid by catalytic coupling reaction of carbon monoxide in gaseous phase at normal pressure is one of important projects of C〓 chemical technology.

CO常压、气固相催化偶联合成草酸和草酸酯等是目前碳一化学研究的重要课题之一。

Under certain acid and temperature conditions, urea added in batches to the phased reaction, a stable gluey liquid high strength adhesive f...

在一定酸度和温度条件下，分批加入尿素进行阶段反应，得到一种胶液性能稳定、黏结强度高的建筑板材用黏合剂。

Under certain acid and temperature conditions, urea added in batches to the phased reaction, a stable gluey liquid high strength adhesive for planks of building is produced.

在一定酸度和温度条件下，分批加入尿素进行阶段反应，得到一种胶液性能稳定、黏结强度高的建筑板材用黏合剂。

The LV messenger ribonucleic acid levels of contractile and calcium regulatory genes were measured by quantitative real time polymerase chain reaction and normalized for glyceraldehyde 3-phosphate dehydrogenase.

采用定量实时聚合酶链反应测定心室收缩蛋白和钙调蛋白基因信使RNA水平，采用3-磷酸甘油醛脱氢酶标准化。

The result shows that the gum acacia can inhibit the hydrolysis reaction of fatty acid ester.

其研究结果用于38°清香型汾酒稳定性的提高取得了令人满意的效果。

METHODS The target compound was synthesized from 3,4-dimethoxyphenylacetic acid via halogenation, acylation, cyclization, alkylation and iodine substitution reaction.

以3，4-二甲氧基苯乙酸为原料，经卤化、酰化、环合、烷基化、碘取代等反应制得目标化合物。

In this paper, the progress of hemicellulose hydrolysis reaction with dilute acid is reviewed.

本文综述了半纤维素稀酸水解反应的研究进展。

It is found that the concentration of sulfuric acid in liquid and the reaction temperature are the most sensitive factors for this process. Increasing the ratio of solid to liquid is disadvantageous for growth of crystals even though it does not effect obviously for the rate of dehydration of FGD gypsum. On the other hand,the more closed to the neutral range of pH value the liquid is adjusted,the better stability of the α-form calcium sulfate hemihydrate appear,the more favorable for modification of crystal habit the process is made.

研究中发现pH值和盐溶液浓度是影响FGD石膏脱水速度最敏感的因素，固液比虽然对脱水速度影响不大，但固液比增大对晶体生长和习性改良不利。pH值愈接近中性范围，愈能增强α半水石膏结晶在液相中的稳定性，有利于结晶习性改良。

The catalytic activities of some coordination polymers in synthesis of DPC from oxidative carbonylation of phenol were investigated. Palladium complex Pd(C_2O_4)·0.5(C_4H_8N_2) has better catalytic activity in the typical reaction condition, it was synthesized with PdCl_2, oxalic acid and piperazine hexahydrate by solvothermal method under low temperature and characterized by IR, EA and TG.

以一些配位聚合物作为主催化剂考察它们在苯酚氧化羰基化生成碳酸二苯酯反应中的催化活性，经过比较，筛选出配位聚合物Pd(C_2O_4)·0.5(C_4H_8N_2)(在低温条件下以溶剂热法合成)，采用IR、TG，EA和比表面分析技术对它进行了表征。

From the results, hexose can decompose easily without acid catalysts, and with the increasing of temperature, the reaction rates increased sharply.

在本实验范围内，果糖和葡萄糖分解反应的表观活化能分别为126.16 KJ／mol和140.97 KJ／mol。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。