Something about the Synthesis Method of Lanthanum Acetate for Preparing Lanthanum Tungsten Electrode - I

This article tells the procedures about one of the synthesis methods of lanthanum acetate preparation, lanthanum acetate, which is the raw material of lanthanum tungsten electrode; its preparing experimental procedure can be seen as follows:

1. Weighing 5g lanthanum oxide, then adding it to a round bottom flask, whose capacity is 500mL and is filled with 200mL acetic anhydride, and then suspension liquid, can be obtained.

2. Heating the flask, what can be seen from the bottom of the container is the deposited product, and then makes it reflux until the reaction is over; the time needed is approximately from 6 to 10h.

3. Removing and placing the product in a vacuum dryer, which containing solid NaOH and anhydrous calcium chloride, and then drying it for two days; after that, putting the product in a vacuum dry gun, drying it , the temperature is controlled at 100 ℃ around.



 

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