氯化镁

The catalyst includes: supported Ziegler-Natta catalyst of titanium halide compound and organic electron donor compound supported with MgCl2 alcoholate carrier; aluminoxane prepared with trialkyl aluminum and water; and one kind of organic electron donor, such as organosilicon compound R2Si(OCH3)2, where R is phenyl, isopropyl, isobutyl or cyclopentyl.

该催化剂包括，a一种负载型的Ziegler-Natta催化剂，即将卤钛化合物和有机给电子体化合物负载在氯化镁醇合物载体上得到的固体催化剂，b一种通过三烷基铝与水反应而制备得到的铝氧烷和c一种有机电子给体，如有机硅化合物R 2 Si(OCH 3 ) 2 ，其中R为苯基、异丙基、异丁基或环戊基。

At the same time the study is the base on which makes anhydrous magnesium chloride.

同时本体系的研究为今后制取无水氯化镁工艺奠定了基础。

Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用"一勺烩"方法，以4-羟基苯甲腈为起始原料，首先与硫氢化钠和无水氯化镁在N，N-二甲基甲酰胺中反应，所得中间体不经分离，直接加入2-氯乙酰乙酸乙酯进行环合反应，得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（2）；然后通过六亚甲基四胺/三氟乙酸进行Duff反应，得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（3）；再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

The catalytic activity of different magnesium chloride treating manner,catalyst milling style and milling time were compared.

采用研磨方式制备了氯化镁负载钛催化剂，比较了氯化镁处理方式及球磨方式和球磨时间对催化活性的影响。

The rich magnesium chloride resources in salt lakes of Qinghai can be devoloped various magnesium products .

摘要青海盐湖中有丰富的氯化镁资源，由氯化镁可生产多种镁产品。

In this article, the key problems on the preparation of high purity anhydrous magnesium chloride from hydrated magnesium chloride were discussed.

主要论述以水合氯化镁为原料制备高纯度无水氯化镁的关键问题和国内外相应的新工艺：(1)氯气气氛下脱水；(2 )复盐法；(3)氨

The thermolysis reaction leading to products of anhydrate magnesium chloride and water was studied in this paper by means of quantum chemistry at HF/6-31G basis set.

本文对一水氯化镁分解为无水氯化镁和水的过程进行了理论计算。

Based on the experimental data,the mathematical model and the equation for the relationship between the concentration of MgCl_2 solution and its boiling point and secondary steam temperature at any pressure were established.

根据实验测定的数据建立了数学模型，研究确定了任意压强条件下氯化镁溶液质量分数与其沸点及二次蒸汽温度的关系式，通过直接测定溶液沸点及二次蒸汽温度，即可确定出氯化镁溶液质量分数。

Through theoretical analysis of bischofite＇s pyrolysis and chemical analysis of intermediate products during different sintering stages, anhydrous magnesium chloride was presumed to be the precursor, which was confirmed by the preparation of MgO whisker from anhydrous magnesium chloride.

通过对水氯镁石热解的理论分析、以及对灼烧各阶段产物的化学分析，确定生成晶须的中间产物为无水氯化镁，然后直接从无水氯化镁制备出MgO 晶须。

10 kt/a anti-block industrial potassium nitrate is using magnesium nitrate and potassium chloride as raw materials,with the new production techniques of producing potassium nitrate with the newly-developed double decomposition circulating reaction method.By-product magnesium chloride hexahydrated with a small amount of potassium nitrate is called nitrogen-potassium-magnesium fertilizer.

张罡摘要： 1万t防结块工业硝酸钾的生产装置选用硝酸镁与氯化钾为原料，采用新研究开发的复分解循环反应法生产硝酸钾新工艺，副产品为六水氯化镁，六水氯化镁含少量硝酸钾，故称之为氮钾镁肥。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。