Background and overview[3]
Potassium carbonate semihydrate is also called potassium carbonate 1.5 hydrate, potassium carbonate sesquihydrate or crystalline potassium carbonate. Potassium carbonate semi-water is used to make potassium soap, cosmetics and glass, enamel, printing and dyeing industry and pharmaceutical raw materials, inorganic salt raw materials, dyes, welding rods, explosives, electric tubes, ceramic building materials, electronic tubes, picture tubes, daily chemicals, etc.
Apply[1-2]
CN201910230106.3 discloses a method of doping Ba and Ni ions into KNbO3 perovskite, which includes the following steps: according to the mass ratio of 1.0945:0.2654:0.0581:1.6517 Weigh four powders of potassium carbonate hemihydrate, barium carbonate, nickel oxide and niobium pentoxide; then carry out the process of grinding, calcining, grinding, calcining and grinding in order to obtain KBNNO doped with Ba and Ni ions ( x=0.1) perovskite. The method described in this application effectively simplifies the preparation process and steps of perovskite, greatly shortens the preparation time of perovskite, does not require special treatment during the preparation process, does not require the use of expensive equipment, and is suitable for large-scale production; the prepared KBNNO (x=0.1) perovskite has certain market potential in the field of visible light catalytic degradation of organic pollutants and preparation of solar cells.
CN200510132898.9 reports a method for synthesizing potassium sorbate, which involves mixing and grinding sorbic acid, potassium hydroxide and/or potassium carbonate in a solid state for chemical reaction. The temperature control is -2℃-80℃, and the pressure control is 0.005MPa~0.15MPa. When solid sorbic acid and solid potassium carbonate, potassium hydroxide, and potassium carbonate half water are used as raw materials for solid-solid reaction to synthesize potassium sorbate, catalysts, retarders, and anti-caking agents can be used to ensure the smooth progress of the reaction. The advantages of this method are: (1) the reaction is carried out at normal temperature, (2) the production process is simple, (3) equipment investment is small, (4) it occupies a small factory building, (5) it saves electricity and energy, (6) no waste gas is produced, Waste water and waste residue.
References
[1] CN201910230106.3 A method of doping Ba and Ni ions into KNbO3 perovskite
[2] [China invention, China invention authorization] CN200510132898.9 A method of synthesizing potassium sorbate
[3]Hu Weixiao, Yang Zhongyu. Handbook of Preparation of Organic Compounds, Tianjin Science and Technology Translation and Publishing Company: 2009
