查询词典 acid process

The invention provides a method to prepare 3, 3-dimethyl butyric acid chloride, which is simple in process, simple in operation and low in cost, with high safety and little pollution to the environment.

提供一种工艺简单、操作简便、安全性高、生产成本低、对环境影响小的3，3-二甲基丁酰氯的制备方法。

According to the batch experiments on behavior of yellow soil releasing cadmium at conditions with different acid rain, it found that the process of releasing absorbed cadmium in the soil consisted of a fast reaction and a slow reaction.

对不同酸雨条件下黄壤对镉释放的研究发现，吸附态镉释放的过程可以分为快反应和慢反应两个阶段。

The results showed that the low interface tension is contributed by the carboxylate surfactant,but the transient process is caused by the interface active agents produced from the reaction between base in water and organic acid in crude oil.

结果表明，低界面张力主要是石油羧酸盐活性剂的贡献，而动态LIFT过程是由水相中碱与原油中的有机酸反应生成的界面活性物质引起的。

Process of aluminium hard anodizing in solut io n of composite carboxylic acid with strong current density was developed.

开发出铝在复合有机羧酸中的大电流硬质阳极氧化工艺。

In the process of test , the Trp in the carpophore was destroyed because of the use of acid hydrolysis . The content of the other amino acids were tested , and the numbers were high .

在测定过程中，由于采用了酸水解，子实体中的色氨酸被破坏，而其余17种氨基酸均被测出，含量极其丰富。

The preparation process includes the following steps: dissolving activator and RE oxide in the molar ratio of 0.01-0.02 in concentrated nitric acid and heating to dry, dissolving the obtain RE nitrate in deionized water to obtain solution of RE nitrate; dissolving soluble tungstate and surfactant in deionized water to obtain tungstate solution; mixing the RE nitrate solution and the tungstate solution through stirring to reaction for 25-60 min to obtain white precipitate; hydrothermal reaction of the precipitate in a reaction kettle at 100-260 deg.c for 24-72 hr; centrifugally separating, washing and drying to obtain the product.

浓硝酸的加入量保证稀土氧化物溶解就可以，过量的硝酸可以加热除去；将可溶性钨酸盐和表面活性剂溶解于去离子水中，得到钨酸盐溶液，表面活剂性的加入量为反应原料重量的0-30wt％；将稀土硝酸盐溶液加入到钨酸盐溶液中搅拌，发生沉淀反应，磁力搅拌时间为25-60分钟，得到白色沉淀；将含有沉淀物的溶液作为前驱物加入到反应釜中，发生水热反应，反应温度为100-260℃，反应时间为24～72小时；离心分离，洗涤，干燥，即得所需产物。

The reasons of hypochloric acid produced and its effects on the process in the production of chlorate are analyzed.

分析了在氯酸盐生产过程中次氯酸产生的原因及对工艺过程的影响。

The process of preparing sterilizing granule capable of generating chorine dioxide in one package includes the following steps: preparing activating agent; mixing inorganic salt and nickel acetate, re-crystallization, sieving and deactivation; sieving and deactivating solid acid; mixing with inorganic salt; mixing sodium chlorite and cobaltous chloride, re-crystallization, sieving and deactivation; and mixing the activating agent with sodium chlorite.

一种可发生二氧化氯的一元包装消毒颗粒制备方法，其特征是制备活化剂：将无机盐加入醋酸镍，经过重结晶后，筛分、钝化处理；将固体酸进行筛分、钝化处理；然后与无机盐进行混合；在亚氯酸钠中加入氯化亚钴后，经过重结晶、筛分、钝化处理；将上述活化剂和亚氯酸钠均匀混合即成。

When the sodium lauryl sulfate and p-octyl polyethylene glycol phenyl ether is used and its level in 3% and 6: 4 ratio, the polymerization process has the lowest coagulum and the highest monomer conversion. Higher reaction temperature and more level hydroxyl value lead to more coagulum, the latter also lead to larger particle size. The acid value has larger influence on viscosity and coagulum, there exist a best range. The emulsion particle size is larger for its hydrophilicity, most of its particles are connected together.

在含较高亲水单体的乳液聚合体系中，难以制得稳定的预乳化液，不能采用工业生产中常用的预乳化工艺，而只能采用混合单体直接滴加的方法；由于单体混合物的亲水亲油值较高，用阴离子型乳化剂十二烷基硫酸钠和非离子型乳化剂聚乙二醇辛基苯基醚混合，用量为单体总量的3％，且比例在6：4时，乳液聚合时具有最低的凝聚物含量和最高的单体转化率；乳液聚合反应温度升高，可以提高单体转化率，增加反应速度，但凝聚率相应提高；随着羟基单体含量的增加，聚合过程中凝聚率增加，聚合物乳胶粒平均直径增加；羧基单体有一个最佳的用量（2.6％），过高或过低凝聚率均提高；羧基含量对乳液的粘度有较大的影响，当羧基含量较低时，羧基含量增加，乳液粘度增加明显；含羟基乳液粒子由于含亲水基团较多，使得乳胶粒径增大，乳胶粒子大多数互相凝聚在一起，处于凝聚态。

Based on corn cobs , a pretreatment process in modest conditions atmospheric pressure and moderate reaction temperature was designed to fractionate lignocellulose by using formic acid .

以玉米芯为研究对象，提出了常压中温条件下甲酸预处理木质纤维素组分分离的工艺。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。