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- RECENT DEVELOPMENT OF POTASSIUM CARBONATE INDUSTRY. 碳酸钾工业发展近况。
- The output of potassium carbonate and xylitol takes the first place in China. 碳酸钾、木糖醇产品产量居全国首位；
- METHODS 3-hydroxyestrogen reacted with dimethylsulfate in acetone in the presence of potassium carbonate. 方法以含3－酚羟基的雌激素类化合物为原料，丙酮为溶剂，在碳酸钾存在下与硫酸二甲醋反应。
- A new technology to recover potassium carbonate from the wastes of triazolone andmultipIe-effect azole production by exchange method is introduced. 介绍了用离子交换法从生产农药三唑酮、多效唑的废渣中回收碳酸钾的新工艺。
- Some problems of KOH units were analysed, including grey flakes, overproof of potassium chloride and potassium carbonate. 分析了KOH装置片碱颜色发灰,氯化钾、碳酸钾超标等问题及采取的处理措施。
- Nano-barium titanate was fabricated by multi-step reactions using barium acetate, potassium carbonate and tetrabutyl titanate as raw materials. 采用醋酸钡、碳酸钾、钛酸丁酯等为初始反应物,通过多步反应的方法,制得了纳米钛酸钡。
- Through one step method of neutralizing and polymerizing,the PTTP is prepared from both superphosphoric acid and potassium carbonate raw materials. 以过磷酸和碳酸钾为原料,经中和、聚合一步法制备三聚磷酸钾。
- The profile of changes in drying rate and nutrient content in alfalfa hay made by adding 1.5%,2.0%,3.0% potassium carbonate (K_2CO_3) were investigated. 通过添加不同浓度K_2CO_3(1.;5%25、2
- Rapid N hydrocarbylation of barbitone or barbitone sodium with a series of halides on potassium carbonate were performed in National NN 5652 750W microwave oven. 在微波辐射下，以无水碳酸钾作为碱性试剂和载体，巴比妥或巴比妥钠和卤代烃在固相能迅速地发生反应生成相应的N-烃基化产物。
- The principle and craft processeses of three kinds of method decarbonization technigue of NHD,hot potassium carbonate,and MDEA were introduced in this paper. 简述了NHD法、热钾碱法、MDEA法三种脱碳技术的原理及工艺流程,并对三种流程进行了技术比较,提出了适用条件。
- By spraying and coating the potassium carbonate solution onto the surface of glass spheres, the layering growth mechanism of granulating process was studied in fluidized bed. 通过在流化床中将碳酸钾溶液雾化后喷涂在处于流化状态的玻璃珠上,研究了流化床造粒过程的层式生长机理。
- The effects of temperature,mixture ratio and the particle size of potassium carbonate(K 2CO 3) on the molecular weights of OH PSU,especially the effects of solvents on reaction procedures were investigated. 对聚砜低聚体的合成工艺问题进行了较为深入的研究，重点就温度、原料配比、K2CO3对低聚体分子量的影响及溶剂对反应过程和结果的影响进行了讨论
- The pre-treatment method which combined n-hexane extraction with potassium carbonate solution extraction for the determination of paclitaxel in crude extract of Taxus madia by HPLC is established. 摘要曼地亚红豆干杉枝叶粗提液采用正己烷萃取，碳酸钾水溶液碱洗两步除杂处理后，再用HPLC测定分析紫杉醇含量。
- The p-tert-butylcalix[4]arene (1) was firstly alkylated with 1,2-dibromoethane and 1,3-dibro-mopropane to give calix[4]arene derivatives 2 and 3 in the presence of potassium carbonate, respectively. 以对叔丁基杯[4]芳烃(1)为原料,分别与1,2-二溴乙烷、1,3-二溴丙烷在碳酸钾的存在下进行选择性烷基化反应,生成杯[4]芳烃衍生物2和3。
- The absolute potassium carbonate as a acid-catcher had been used to synthsis of triisopropyl phosphite.The yield and quality of product obtained from this methed are higher than other metheds. 用无水碳酸钾作缚酸剂合成亚磷酸三异丙酯，产品质量优于文献报道的方法。
- Using cesium carbonate as catalyxer and potassium carbonate as base,reacting directly phenol with alkyl halides in refluxing acetonitrile will give alkyl aryl ethers in good yields. 以碳酸铯作催化剂;碳酸钾作碱;以乙腈作溶剂;在回流的条件下酚与卤代烃反应高产率得到烷基芳醚.
- No potassium did we find in this mineral. 在这种矿石中我们没有发现钾。
- A series of high specific surface area activated carbons was prepared with char of tobacco stems as raw materials and potassium carbonate as activating agent using a microwave heating procedure. 以烟杆炭化料为原料,采用微波加热碳酸钾活化法制备了高比表面积活性炭。
- I make a carbon copy of my documents. 我用复写纸复写文件。
- Soft drinks contain carbon dioxide. 软饮料中含有二氧化碳。
