Manganese chloride dehydration method and method for promoting (cyclopentadienyl)manganese compound yield

Abstract

The invention discloses a dehydrating method to obtain low-water manganese chloride and receiving rate improving method of manganese compound, which comprises the following steps: placing manganese chloride with crystal water in the sealed drier; heating to 150-450 deg.c; extracting into -0.01-0.1Mpa; gasifying the manganese chloride crystal water in the drier; draining along with vacuum; measuring the drained water; putting in the oxonation autoclave through pipe to do oxonation reaction. The invention makes water content of manganese chloride lower than 200ppm, which improves receiving rate of manganese compound by 8-15%.

Description

technical field

[0001] The invention relates to a dehydration method capable of obtaining manganese chloride with low water content (for example, water content less than 200ppm) and a method for improving the yield of manganese compounds. Background technique

[0002] Manganese chloride is required to have as low a water content as possible in some special chemical production, for example, the water content is less than 200ppm or less. And currently commercially available "anhydrous" manganese chloride has the lowest water content mostly around 0.5-1% (5000-10000ppm). The reason is: manganese chloride has strong hygroscopicity, and after moisture absorption, 4 water (crystal water) manganese chloride is generated, and it is quite difficult to remove the 4th crystal water, so the moisture content of commercial manganese chloride is relatively high. Some special requirements cannot be met. For example, the coordination reaction between sodium cyanocene and manganese chloride ...

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