Principle and operation technology of removing silicon,phosphorous and arsenic from sodium wolframate is presented.

阐述了酸钠溶液中除硅、磷、砷的原理,并提出了具体的操作工艺。

Synthesis of n-butyl lactate is catalyzed by phosphotungstic acid and aluminium phosphotungstate.

以磷酸磷酸铝为催化剂,用乳酸酸合成了乳酸酯。

It has been proved that it is economical and feasible to eliminate educt alkali from coarse sodium tungstate with electrodialysis method of negative ion (1) selective membrane.

一价阴离子选择膜电渗析法从粗酸钠溶液中脱除游离碱是经济可行的。

The Phosphonium Tungstic Acid and its catalysate can be saparated byusing Polyvingl chloride - Nylon 6 resin and the result is satisfactory.

本文采用聚氯乙——6树脂;分离磷酸与其催化产物,达到较满意的效果。

The transalkylation of polyethylbenzene, mainly diethylbenzene and triethylbenzene, with benzene catalyzed by tungstophosphoric acid has been studied in stirred autoclave.

采用搅拌高压釜,以磷酸为催化剂,研究了苯与多乙苯的烷基转移反应,多乙苯主要是二乙苯三乙苯。

Ethylene glycol monoether acetate are synthesized from acetic acid and ethylene glycol monoethyl ether with supported phosphotungstic acid catalyst.

以醋酸乙二醇单乙醚为原料,活性白土负载磷酸作为催化剂,合成了乙二醇单乙醚醋酸酯。

The isopropyl chloracetate was synthesized by esterification of chloracetic acid with isopropyl alcohol using aluminium phosphotungstate as catalyst.

以氯乙酸异丙醇为原料,磷酸铝作催化剂进行酯化反应,合成氯乙酸异丙酯。

Composite W-Cu oxide nanopowder was prepared by spray-drying and milling of ammonium metatungstate(AMT) and cupric nitrate.

采用偏酸铵、硝酸铜通过喷雾干燥、焙烧、球磨工艺制备纳米氧化铜复合粉末。