查询词典 sulfate paper

This paper introuduced to use volumetric analysis to determine the microamount calcium and magnesium in sodium sulfate by diminishing the affect of iron, and validated the reliability of this method.

提出采用沉淀分离法消除Fe3 +等离子的干扰，用容量法来测定Na2 SO4中微量的钙、镁含量，并验证了该方法的可靠

In this paper, the applications of the environmental friendly solid acid catalysts for esterification were studied and the activities of these catalysts were discussed, by which the solid acid ferric sulfate x-hydrate was used first as catalyst in the synthesis of dimethyl fumarate and ethyl chloroacetate and solid super acid SO42-/Fe2O3 was used first as catalyst in the synthesis of ethyl p-nitrobenzoate.

本文研究了对环境友好的固体酸催化剂在酯化反应中的应用，首次以固体酸Fe_2(SO_4)_3·xH_2O为催化剂合成了新型防霉剂富马酸二甲酯和化工原料氯乙酸乙酯，以固体超强酸5O_4~(2-)／Fe_2O_3为催化剂合成了医药中间体对硝基苯甲酸乙酯，并探讨了这些催化剂的催化活性。

The paper studies mainly the separation and recovery of low -concentration sodium sulfate - acetic acid-water system in the laboratory and probes into how varied factors affect the electrodialyzer' s limited electricity current density and in separating process performance.

本课题在实验室范围内，对低浓度硫酸钠—乙酸—水物系电渗析分离过程进行了研究，并就各种因素对电渗析器的极限电流密度和分离过程性能的影响进行了探讨。

Polymeric ferric sulfate was prepared by pyrite cinder in this paper.

本文进行了用硫铁矿烧渣制备聚合硫酸铁的实验研究。

This paper optimized the reaction condition for alcohol-halogen acid method and dimethyl sulfate method based on reviewed the main means which iodomethane can be synthesized.

在综述碘甲烷常用制备方法的基础上，对醇氢卤酸法及硫酸二甲酯法进行了条件优化及对比总结。

In this paper TiO2/minerals have been prepared using natural minerals as carrier and the industrial metatitanic acid and the industrial sulfate titanium liquid as the raw material based on the effects such as loading capacity of TiO2, specific surface area of minerals, different mineral source and preparation cost.

本研究以天然矿物对TiO_2的负载能力、比表面积、矿物来源、材料成本等因素为依据，通过对天然矿石载体的活化工艺研究和工业偏钛酸、工业硫酸钛液为原料制取TiO_2／天然矿物复合材料的制备工艺研究，以及样品光催化降解有机物的研究，最终制得了具有光催化活性的TiO_2／天然矿物复合材料。

In this paper, a systematic study on the wetting capacity of sulfate of myristic acid monoethanolamide was made by the canvas sinkking method, through measuring the wetting time of MMS's solution under different concentration, different temperature and different degree of hardwater and comparing with three other surfactants.

对肉豆蔻酸单乙醇酰胺硫酸酯盐的润湿性能进行了系统研究，用帆布沉降法测定了MMS在不同温度、不同质量分数溶液、不同硬水度中的润湿性能，并与其他表面活性剂十二烷基硫酸酯盐、月桂醇醚硫酸酯盐、十二烷基苯磺酸盐进行了比较。

This paper reports the study for phosphomolybdic acid H 3[P(Mo 3O 10 4]·xH 2O as catalyst and anhydrous magnesium sulfate as drying agent used in the esterification of hexanoic acid and ethyl alcohol.

报道了以磷钼酸为催化剂，以无水硫酸镁为吸水剂，催化脱水合成己酸乙酯。

The paper elaborateds the methods for the magnesium salt whisker synthesis which contains magnesium pyroborate whisker、basic magnesium sulfate whisker、magnesia whisker ect.

详细阐述了硼酸镁、碱式硫酸镁晶须和氧化镁晶须等镁盐晶须的合成方法，着重介绍了镁盐晶须作为增强材料在金属铸造、复合材料、塑料等行业的应用。

This paper described the preparation of nanometer TiO_2 by means of direct precipitation and homogeneous precipitation with titanyl sulfate,which is a semifinished product during the production of TiO_2 using sulfuric method as raw material.

我国二氧化钛(TiO2，俗称钛白)工业自1956年生产搪瓷和电焊条开始，距今已有近50年的发展历史。近10来，我国TiO2工业发展很快，取得了令人瞩目的成就，其中硫酸法TiO2的生产与国外先进技术相差无异，总生产能力已跃居世界第二位，仅次于美国[1]。

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。