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

阐述了钨钠溶液中除硅、磷、砷的原理,并提出了具体的操工艺。

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

以磷钨和磷钨化剂,用乳和正丁合成了乳正丁酯。

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

采用偏钨铵、硝铜通过喷雾干、焙烧、球磨工艺制备纳米氧化钨铜复合粉末。

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

以氯乙和异丙醇原料,磷钨化剂进行酯化反应,合成氯乙异丙酯。

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

以醋和乙二醇单乙醚原料,活性白土负载磷钨化剂,合成了乙二醇单乙醚醋酯。

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,以磷钨化剂,研究了苯与多乙苯的烷基转移反应,多乙苯主要是二乙苯和三乙苯。

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

本文采用聚氯乙烯——尼龙6树脂;分离磷钨与其化产物,达到较满意的效果。

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钨钠溶液中脱除游离碱是经济可行的。