A mixture of sulphuric acid-thiourea-thioglycollic acid is used as selective solvent for free silver sulphide and sulphuric acid-thiourea-ferric sulphate for free native silver. On Deep Desulfurization by Activated Carbon in High Purity Ammonium Tungstate Solution 用硫酸-硫脲-硫代乙醇酸溶液选择溶解硫化银;用硫酸-硫脲-硫酸高铁铵溶液选择溶解自然银。高纯钨酸铵溶液中活性炭深度除硫研究
The preparing processes of ammonium tungstate solution, ammonium paratungstate crystal and high pure ammonium paratungstate crystal are reviewed. 介绍国内外制备钨酸铵溶液、仲钨酸铵晶体及高纯仲钨酸铵的制备方法。
Try to Discuss the Treatment and Recycling Utilization of Ammonium Tungstate Production Wastewater by Extraction 试论萃取法钨酸铵生产废水的处理及回用
Study on the Extraction Spectrophotometry by Using Polyethylene Glycol-BCO-Ammonium Sulfate On Deep Desulfurization by Activated Carbon in High Purity Ammonium Tungstate Solution 聚乙二醇-新铜试剂-硫酸铵萃取光度法测定铜高纯钨酸铵溶液中活性炭深度除硫研究
The Study of Deep Molybdenum Removal by Activated Carbon in High-purity Solution of Ammonium Tungstate 高纯钨酸铵溶液中活性炭深度除钼研究
The electrode was used to the determination of boron in ammonium tungstate. 电极用于仲钨酸铵中硼的测定,将仲钨酸铵中的硼转化为BF4~-,用标准加入法测定其中硼的含量,结果满意。
Effect of Tungsten Content of Ammonium Tungstate Solution on the Particle Shape of Nanometer Tungsten Powder 钨酸铵溶液浓度对超微钨粉形貌的影响
AAS Determination of Trace Aluminium in Ammonium Tungstate and A Discussion of The Mechanism of Copper and Nickel Mixed Matrix Modifier 钨酸铵中微量铝的测定及采用铜镍混合改进剂时机理初探
At last we analyzed the effect of adding seed crystal and solution of ammonium tungstate on crystal appearance. 最后讨论了添加晶种和钨酸铵溶液对晶体形貌的影响。
Rosin and gaseous ammonia occurred the reaction of ammoniation by the catalyst of para ammonium tungstate, and dehydrating action, which might produce the high quality rosin nitrile 松香与气态氨在仲钨酸铵催化剂作用下发生氨化和脱水反应后,可生产出性能优良的松香腈产品
The application of the straight lime precipitation process for the recovery of WO_3 fram the ammonium paratungstate mother liquor has been studied. The ordinary low price lime is employed instead of soda, and the WO_3 in the mother liquor transforms straightly into calcium tungstate. 本文介绍了用石灰直接沉淀法回收仲钨酸铵结晶母液中WO30该法是用普通廉价的石灰代替烧碱,把结晶母液中的WO3直接转变成钨酸钙,白钨母液经浓缩回收氯化铵。
Ammonium molybdate, ammonium dichromate, ammonium chromate and ammonium tungstate showed positive effects on the formation of aldehydes and reduced the loss of rhodium in the distillation process for the separation of the catalyst and products. 结果表明,钼酸铵、重铬酸铵、铬酸铵或钨酸铵的添加对提高产物醛的收率有促进作用,并且在蒸馏分离催化剂和产物的过程中可以减少Rh的损失。
Determination of Impurities in Trioxide Tungsten and Ammonium Para Tungstate by Spark Source Mass Spectrometry Using Isotope Dilution Method 用质谱同位素稀释法定量分析三氧化钨及仲钨酸铵中杂质
Separation of molybdenum from tungsten by solvent extraction using the hydrogen peroxide as complex agent from ammonium tungstate solution containing high molybdenum was studied in this paper. 本文以双氧水为络合剂,采用一种二元混合萃取剂进行了高钼钨酸铵工业料液络合萃取分离钨钼的研究。
Ammonium tungstate had the best catalytic activity among different kinds of tungsten acid salts for the oxidation reaction. 钨酸盐类物质中催化效果最好的为钨酸铵。