Synthesis and preparation method of copper tungstate – high temperature reaction of CuO and WO3
Copper tungstate was synthesized by high temperature reaction of CuO and WO3. Use alcohol as the medium, mix the materials for 8-16 hours, and the ball-to-material ratio is 1:1, and roast the mixed materials in a muffle furnace at various temperatures to obtain copper tungstate.
Synthesis and preparation method of copper tungstate – cationic membrane electrolysis method
The method of preparing copper tungstate by cationic membrane electrolysis uses copper sheet as anode, inert electrode as cathode, sodium tungstate solution with a concentration range of 0.005~2.5mol/L as anolyte, and a pH range of 0~14 The acid solution, alkali solution or salt solution is the catholyte, and the cationic membrane is used to electrolyze the sodium tungstate solution, and the constant current Chemicalbook electrolysis or constant voltage electrolysis is used. The current density range of the constant current electrolysis is 1~100mA/cm2, so The voltage range used in the constant voltage electrolysis is 10~300V, the temperature range of the electrolyte during electrolysis is from room temperature to 90°C, and the electrolysis is performed for 3~30 minutes, and then the obtained product is cleaned and dried, and the dried product is roasted at high temperature , Roasting is to put the product in a container under the air atmosphere and raise the temperature to 450~600℃ at a heating rate of 2.5~10℃/min, then roast at a constant temperature for 1~5h, and naturally cool to room temperature to obtain pure copper tungstate crystals.
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