This article analyzes problems in the making up of molybdic acid ammonium solution by using molybdic acid ammonium and proposes some improvement, which turns out to be better result. 本文对用仲钼酸铵配制钼酸铵溶液的方法中存在的问题加以理论分析,并对这个配制方法进行了实验改进,收到了良好的实验效果。
A phospho molybdic acid catalyst was investigated for the esterification of fumaric acid with methanol in this paper. The influences of raw material ratio, reaction time and amount of catalyst used on the yield of DMF were investigated. 研究了以磷钼酸为催化剂,富马酸和甲醇为原料合成富马酸二甲酯(DMF),探讨了酸醇量比、反应时间、催化剂用量等工艺参数对DMF收率的影响。
Firstly, we selected the catalyst for piperidine oxidation reaction, and obtained the compound catalyst of silicon tungsten molybdic acid. 首先就哌啶醇催化氧化合成TEMPO反应使用的催化剂进行筛选,得出催化效果显著的硅钨钼酸与乙二胺四乙酸复合催化剂。
The results indicated that Mo-PF was synthesized by esterified reaction between molybdic acid and hydroxymethyl in phenolic alcohol, in this reaction, the transition metal Mo atom was bonded in the major molecule chains of PF. 结果表明:钼酚醛树脂是通过钼酸与酚醇中的羟甲基发生酯化反应,使钼以化学键的形式键合于酚醛树脂分子主链中而合成的;
Catalytic synthesis of ethyl chloroacetate with phospho-molybdic acid 磷钼酸催化合成氯乙酸乙酯
The experimental process for recovery molybdenum and ammonium chloride from mother liquors of ammonium molybdate and ammonia leaching molybdic acid using HT adsorbents is presented. 介绍利用HT吸附剂从钼酸铵母液及氨浸钼渣酸分解母液中回收钼及氯化铵的实验过程。
The result correspond with that by the phosphorus molybdic acid quinoline weight method. 该方法的测定结果与磷钼酸喹啉重量法测定结果基本一致。
The effect of phosphatic and molybdic fertilizers on the Vegetable Pea in the acid soil 酸性土壤上磷、钼对菜豌豆效应的研究
The behaviour of molybdenum in uranium ore Processing-The species of molybdic acid in aqueous solution 钼在铀湿法冶金过程中的行为&钼酸在水溶液中的状态
Raman Spectra Investigation on molybdic acid solution in uranium ore processing 钼酸溶液的喇曼光谱研究
A Study of Preparation and Properties of the Iodine-Modified Molybdic Acid 碘修饰多钼酸的制备及其性能研究
By using potentiometer titration and laser-Raman spectroscopy the relationship of molybdic acid polymerization and the pH value of solution or the molybdenum concentration was determined. 用电位滴定、激光喇曼光谱法研究了钼酸聚合与溶液pH值和浓度的关系。
In order to solve the problems with common phenolic resin binder for refractory, the paper has researched phenolic resin modified by molybdic acid. 针对普通酚醛树脂(PF)作为耐火材料结合剂使用中存在的问题,研究了以钼酸改性PF的可行性。
For the problems that the ordinary phenolic resins ( PFs) were used as refractory binder, combined with structural characteristics ablation-resistant resin should have, feasibility of boric acid, molybdic acid and silicic acid-modified PFs were studied. 针对普通酚醛树脂(PF)在作为耐火材料结合剂使用中存在的问题,结合耐烧蚀树脂基体应具备的结构特点,研究了以硼酸、钼酸、硅酸改性PF的可行性。