1) CaCr 2O 7
重铬酸钙
1.
CaCr 2O 7 can be prepared by carbonation of CaCrO 4.
研究了铬酸钙碳化制备重铬酸钙过程中二氧化碳的吸收和铬酸钙溶解对反应过程速率的影响及在不同温度和不同二氧化碳压力下的反应平衡，结果表明：反应速率受二氧化碳的吸收和铬酸钙溶解过程的控制，在铬酸钙固体过量、５０ ℃、二氧化碳压力１。
2) calcium chromate
铬酸钙
1.
Dissolution kinetics of calcium chromate and its solubilities measurement;
铬酸钙溶解动力学研究及溶解度测定
2.
There are various processes known for production of calcium chromate, which suffer from inherent disadvantages such as poor quality and severe pollution.
介绍了一种制取铬酸钙的新方法,利用重铬酸钠溶液分解碳酸钙,可以得到高纯度的铬酸钙。
3) Ca-doped lanthanum chromites
掺钙铬酸镧
1.
The powders of Ca-doped lanthanum chro-mites prepared by solid state method individually were mixed with the powders of refractory ZrO2, CaO, MgO, SiO2 and Al2O3 in some proportion, and sintered at 1650 and 1700 ℃ after compression moulding, re- spectively, then sintered characteristics of the complex oxides based on Ca-doped lanthanum chromites were studied.
在固相法合成的掺钙铬酸镧微粉中分别加入不同比例ZrO2,CaO,MgO,SiO2和Al2O3微粉,模压成型后经1650和1700 ℃两种温度烧结,用以研究掺钙铬酸镧与其他氧化物的复合烧结行为。
2.
It is shown that both decomposition of organic component and formation of Ca-doped lanthanum chromites powders can be completed in a direct step of the polymeric gel combustion.
采用低温燃烧法制备了掺钙铬酸镧超细粉体。
4) calcium chromate(vi
铬酸钙,无水
5) anhydrous calcium chromate
无水铬酸钙
6) sodium dichromate
重铬酸钠
1.
Pretreatment of arsenical refractory gold concentrate -(I) Leaching by sodium dichromate;
含砷难处理金矿预处理研究——(Ⅰ)重铬酸钠浸出法
2.
The solution of sulfuric acid was added dropwise to the reaction vessel contained 1,3-dichloro-2-propanol,sodium dichromate and water.
将硫酸水溶液滴加到1,3-二氯-2-丙醇与重铬酸钠水溶液的混合物中,在温度23~27℃的条件下搅拌反应5 h,重铬酸钠∶1,3-二氯-2-丙醇=1∶2(摩尔比),此条件下收率为79。
3.
It is shown that calcium carbonate can be decomposed in aqueous sodium dichromate solution and transformed to calcium chromate at ambient pressure and boiling temperature.
介绍了一种制取铬酸钙的新方法,利用重铬酸钠溶液分解碳酸钙,可以得到高纯度的铬酸钙。
补充资料：铬酸钙
分子式：CaCrO4·2H2O
CAS号：
性质： 黄色单斜棱晶。溶于酸。微溶于水。不溶于醇。加热至200℃时失去2个结晶水。由铬酸钠溶液与二水氯化钙加热进行复分解反应，经过滤、洗涤、离心脱水、干燥制得。用作防锈颜料，缓蚀剂，电池去极化剂。
CAS号：
性质： 黄色单斜棱晶。溶于酸。微溶于水。不溶于醇。加热至200℃时失去2个结晶水。由铬酸钠溶液与二水氯化钙加热进行复分解反应，经过滤、洗涤、离心脱水、干燥制得。用作防锈颜料，缓蚀剂，电池去极化剂。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条