摘要:
The invention relates to a novel method for producing mononatrium trihydrogen pyrophosphate and to the use of products produced by said method as acidifiers, buffering agents and complexing agents. The novel method is characterised in that glassy, acidic natrium polyphosphate containing a Na/P ratio of 1: 2 in fine powder form is tempered at temperatures ranging between 100 and 200 DEG C in moist air with a steam pressure of between 10 and 200 mBar, or in a polar solvent, in which the phosphate is insoluble, in the presence of a quantity of water sufficient for the hydrolysis, until the mass has been predominantly converted into NaH3P2O7.
摘要翻译:本发明涉及一种用于生产焦磷酸三氢一钠的新方法,以及由该方法生产的产品作为酸化剂,缓冲剂和络合剂的用途。 该新方法的特征在于,将细粉末形式的Na / P比为1:2的玻璃态酸性聚磷酸钠在100-200℃的温度范围内在蒸汽压力为10-200mbar的潮湿空气中进行回火 或者在磷酸盐不溶于其中的极性溶剂中,在足以水解的一定量的水存在下,直到物质主要转化为NaH 3 P 2 O 7。
摘要:
A process for producing an alkali metal polyphosphate, comprising heating a solution comprising a solvent, alkali metal ions, phosphate ions, and 3 to 50% by weight of organic matter, wherein the solution contains, in total, 5 to 65% by weight of the alkali metal ions and the phosphate ions, and the ratio M/P is 1.0 to 3.0, wherein M is the number of moles of alkali metal ions in the solution and P is the number of moles of orthophosphate ions in the solution, at a temperature of 800 to 1200°C in the presence of excess air, optionally after the solution is at least partially dried to solid, to produce the alkali metal polyphosphate.
摘要:
Provided is an anode active material including a transition metal-pyrophosphate of Chemical Formula 1 below: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ €ƒ€ƒ€ƒ€ƒ€ƒM 2 P 2 O 7 where M is any one selected from the group consisting of titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), ruthenium (Ru), palladium (Pd), and silver (Ag), or two or more elements thereof. Since the anode active material of the present invention is stable and has excellent conversion reactivity while including only transition metal and phosphate without using lithium in which the price thereof is continuously increased, the anode active material of the present invention may improve capacity characteristics.
摘要:
A compound of formula Ab′MgaMbXy or Ab′MgaMb(XOz)y for use as electrode material in a magnesium battery is disclosed, wherein A, M, X, b′, a, b, y, and z are defined herein.