CN102390816A - Synthesis method of calcium peroxide - Google Patents

Abstract

The invention relates to a synthesis method of calcium peroxide. In the synthesis method, raw materials and reaction steps are as follows: (1) synthesis: adding the calcium chloride to a reaction flask, then adding 45-80ml of water, evenly stirring, adding hydrogen peroxide, cooling to 0-8 DEG C, dropwise a cold ammonia solution under stirring, cooling for half a hour, and maintaining the temperature at 0-8 DEG C; (2) and drying: washing crystals 2-3 times with little cold water after reactants are filtered, then draining the crystals to dryness and putting the crystals in a constant-temperature drying box, drying for 0.5h at 60 DEG C to form a dihydrate, and then drying for 0.5h at 140 DEG C to form anhydrous calcium peroxide. The synthesis method disclosed by the invention has the advantages of reasonable process, easiness in obtainment of raw materials, low cost, easiness in implementation of industrial production and no pollution; and the produced calcium peroxide can be used as fungicide, preservative, antiferment, seed disinfectant, oily bleacher and the like and is an important inorganic chemical.

Description

A kind of compound method of calcium superoxide

Technical field

The invention belongs to field of fine chemical, especially a kind of compound method of calcium superoxide.

Technical background

Calcium superoxide is a kind of novel, eco-friendly multifunctional inorganic Chemicals, because it is a kind of highly stable superoxide, and has effects such as stronger bleaching, sterilization, sterilization, and environmentally safe, therefore have extensive effect.As: pharmaceutically can be used as sterilant, sanitas; Can be used as the treatment agent that increases foster agent and effluent containing heavy metal ions of the seed treatment agent of direct sowing of rice, the oxygenate of root system of plant, the shrimp of breeding fish etc. at aspects such as agricultural, aquatic products, environmental protection.

Summary of the invention

The objective of the invention is to overcome the weak point of prior art, the compound method of the calcium superoxide that a kind of technology is reasonable, raw material is easy to get, cost is low is provided.

The present invention realizes that the technical scheme of purpose is following:

A kind of compound method of calcium superoxide, raw material and reactions step are following:

Proportioning raw materials:

Calcium chloride 75--85g

Ydrogen peroxide 50 250--280mL

Ammoniacal liquor 55-55mL,

Reactions step:

(1) synthetic: in reaction flask, add calcium chloride, add 45-80ml water again, stir, adding ydrogen peroxide 50, be cooled to 0--8 ℃ and drip cold ammonia soln while stirring, cool off half a hour then, temperature remains on 0--8 ℃;

(2) drying: above-mentioned reactant is filtered the back with small amount of cold water washing crystal 2-3, drain then and place thermostatic drying chamber, elder generation's baking under 60 ℃ formed duohydrate in 0.5 hour, dried by the fire down at 140 ℃ to get anhydrous calcium superoxide in 0.5 hour again.

And said reaction vessel is equipped with whisking appliance, TM, tap funnel.

Advantage of the present invention and positively effect are following:

1, the used technology of the present invention rationally, raw material is easy to get, cost is low; Easy realization of industrial production; Technology is pollution-free, and the calcium superoxide that is provided can be used as sterilant, sanitas, antiferment, seed disinfectant, oils SYNTHETIC OPTICAL WHITNER etc., is a kind of important Inorganic Chemicals.

2, the compound method method that originally provides is simple, reaction temperature and, production safety, be fit to the extensive industriallization that realizes.

Embodiment:

Below in conjunction with embodiment, the present invention is further specified, following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.

Embodiment 1:

A kind of compound method of calcium superoxide, proportioning raw materials:

Calcium chloride 75g

Ydrogen peroxide 50 250mL

Ammoniacal liquor 50mL

The concrete operations step is following:

(1) synthetic: as in the reaction flask that whisking appliance, TM, tap funnel are housed, to add 75g calcium chloride and 50mL water; Stir and form the uniform aqueous solution; Add the 250mL ydrogen peroxide 50 again, stir and be cooled to 2--6 ℃, the cold ammonia soln of Dropwise 5 0mL; Put in the frozen water then and cool off half a hour, temperature remains on 2--8 ℃.

(2) drying: above-mentioned reactant is filtered the back with small amount of cold water washing crystal 2, drain then and place thermostatic drying chamber, elder generation's baking under 60 ℃ formed duohydrate in 0.5 hour, dried by the fire down at 140 ℃ to get anhydrous calcium superoxide in 0.5 hour again.

Embodiment 2:

A kind of compound method of calcium superoxide, proportioning raw materials:

Calcium chloride 80g

Ydrogen peroxide 50 265mL

Ammoniacal liquor 50mL

The concrete operations step is following:

(1) synthetic: as in the reaction flask that whisking appliance, TM, tap funnel are housed, to add 80g calcium chloride and 50mL water; Add the 265mL ydrogen peroxide 50 again, stir and be cooled to 3--8 ℃, the cold ammonia soln of Dropwise 5 0mL; Put in the frozen water then and cool off half a hour, temperature remains on 2--8 ℃.

(2) drying: above-mentioned reactant is filtered the back with small amount of cold water washing crystal 3, drain then and place thermostatic drying chamber, elder generation's baking under 60 ℃ formed duohydrate in 0.5 hour, dried by the fire down at 140 ℃ to get anhydrous calcium superoxide in 0.5 hour again.

Embodiment 3:

A kind of compound method of calcium superoxide, proportioning raw materials:

Calcium chloride 85g

Ydrogen peroxide 50 280mL

Ammoniacal liquor 50mL

The concrete operations step is following:

(1) synthetic: as in the reaction flask that whisking appliance, TM, tap funnel are housed, to add 85g calcium chloride and 50mL water; Add the 280mL ydrogen peroxide 50 again, stir and be cooled to 3--6 ℃, the cold ammonia soln of Dropwise 5 0mL; Put in the frozen water then and cool off half a hour, temperature remains on 2--6 ℃.

(2) drying: above-mentioned reactant is filtered the back with small amount of cold water washing crystal 2, drain then and place thermostatic drying chamber, elder generation's baking under 60 ℃ formed duohydrate in 0.5 hour, dried by the fire down at 140 ℃ to get anhydrous calcium superoxide in 0.5 hour again.

Claims (2)

1. the compound method of a calcium superoxide, it is characterized in that: raw material and reactions step are following:

Proportioning raw materials:

Calcium chloride 75--85g

Ydrogen peroxide 50 250--280mL

Ammoniacal liquor 55-55mL,

Reactions step:

(1) synthetic: in reaction flask, add calcium chloride, add 45-80ml water again, stir, adding ydrogen peroxide 50, be cooled to 0--8 ℃ and drip cold ammonia soln while stirring, cool off half a hour then, temperature remains on 0--8 ℃;

(2) drying: above-mentioned reactant is filtered the back with small amount of cold water washing crystal 2-3, drain then and place thermostatic drying chamber, elder generation's baking under 60 ℃ formed duohydrate in 0.5 hour, dried by the fire down at 140 ℃ to get anhydrous calcium superoxide in 0.5 hour again.

2. the compound method of calcium superoxide according to claim 1, it is characterized in that: said reaction vessel is equipped with whisking appliance, TM, tap funnel.