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- Synthesis of Carbamic Ester by Urea Alcoholysis 尿素醇解法合成氨基甲酸酯类化合物
- Keywords urea alcoholysis;propylene carbonate;lead carbonate catalyst; 尿素醇解;碳酸丙烯酯;碳酸铅催化剂;
- Keywords urea alcoholysis;propylene carbonate;dimethyl carbonate synthesis;catalyst; 尿素醇解法;碳酸丙烯酯;碳酸二甲酯合成;催化剂;
- urea alcoholysis 尿素醇解
- Influence of different factors on alcoholysis of urea catalyzed by ... 探讨了在甲醇钠作用下氧化锌催化尿素醇解的影响因素。
- In the function of sodium methoxide, several factors effecting on alcoholysis of urea by zinc oxide catalyst were obtained. 探讨了在甲醇钠作用下，氧化锌催化尿素醇解的影响因素。
- A clathrate compound, such as urea. 包合物一种笼状化合物，如尿素
- But 120 tons of urea is really a small one. 但120吨尿素确实是个小数目。
- Figure 1. Alcoholysis and hydrolysis of sulfonylurea herbicides. 图一、硫醯尿素类除草剂之醇化与水解(7)。
- Government tender urea must submit price by 18th noon. 政府招标尿素，须于18日正午前报价。
- Allantoin is one of the important urea derivative products. 尿囊素是一种重要的尿素衍生产品。
- A kidney also takes urea and mineral salts out of the blood. 肾还排出血液中的尿素和无机盐。
- Urea is commonly used as the source of nitrogen in foliage sprays. 尿素作为氮素给源普遍地应用于叶面喷布。
- Excreting urea as the chief component of nitrogenous waste. 排尿素的作为含氮排泄物中主要成分的尿排泄的
- Increase of nitrogenous substances, especially urea, in the urine. 氮尿氮物质的增加，特别是尿里的尿素
- Alcoholysis reaction time was determined by variation of refractive index. 提出以折光指数的变化来确定醇解的反应时间;
- Direct alcoholysis of urea have fewer steps,yet the yield of DMC is low,compared with it,indirect alcoholysis of urea have more steps, but the yield and selectivity are high,and will have commercia... 尿素直接醇解法工艺路线短,但碳酸二甲酯产率较低;尿素间接法工艺路线相对较长,但碳酸丙烯酯的产率和选择性较高,具有较好的产业化前景。
- Increase of nitrogenous substances,especially urea,in the urine. 氮尿氮物质的增加，特别是尿里的尿素。
- Describe structure design of light bulk urea storage house. 介绍一种轻型尿素散装仓库结构设计。
- It must be broken down to urea, which consumes energy. 它必须被分解成为尿素，这时也要消耗能量。
