摘要:
A method of forming a powder MjXp wherein Mj is a positive ion or several positive ions selected from alkali metal, alkaline earth metal or transition metal; and Xp is a monoatomic or a polyatomic anion selected from Groups IIIA, IVA, VA, VIA or VIIA; called complexometric precursor formulation or CPF. The method includes the steps of: providing a first reactor vessel with a first gas diffuser and an first agitator; providing a second reactor vessel with a second gas diffuser and a second agitator; charging the first reactor vessel with a first solution comprising a first salt of Mj; introducing gas into the first solution through the first gas diffuser, charging the second reactor vessel with a second solution comprising a salt of Mp; adding the second solution to the first solution to form a complexcelle; drying the complexcelle, to obtain a dry powder; and calcining the dried powder of said MjXp.
摘要:
A process in which a basic metal nitrate is obtained in a high yield is provided. A process for producing a basic metal nitrate, which comprises adding an aqueous solution of a metal nitrate or an aqueous solution of a mixture of a metal nitrate and a water-soluble additive and an alkali solution to a reaction vessel in which a reaction solvent whose pH at 20null C. is adjusted to 6 or less is present, and conducting the reaction with stirring.
摘要:
An oxidized comprising a double salt represented by the chemical formula: M(NO3)inNH4NO3. M is a metal element forming a nitrate salt usually containing water of crystallization, i is a numerical value corresponding to the valency of the metal element M, and n is a molar number from 1 to 20. Mixing a metal nitrate containing water of crystallization with ammonium nitrate , and, further drying produces the above-mentioned double salt.
摘要翻译:氧化的,包含由化学式:M(NO 3)在NH 4 NO 3中表示的双盐。 M是形成通常含有结晶水的硝酸盐的金属元素,i是对应于金属元素M的化合价的数值,n是1至20的摩尔数。将含有结晶水的金属硝酸盐与 硝酸铵,进一步干燥得到上述复盐。
摘要:
Uniform microspheres substantially or completely free from internal cavities and voids are prepared by spraying an aqueous hydrated metal oxide solution onto the surface of a water-immiscible organic liquid containing from 0.04 to 2.0 percent by volume of a surface active agent, the viscosities of each of the organic and inorganic phases plus the amount of surface active agent within the above range being selected such that there is sufficient surface active agent present to prevent the globules from adhering to each other yet an insufficient amount to prevent deformation from the substantially spherical shape.
摘要:
The invention relates to a process for preparing metal nitrates from the corresponding metal wherein the metal is selected from silver, cadmium, bismuth and the metals of atomic number 24-30. The process comprises (A) providing a reactor containing (a) the metal, (b) nitric acid, and (c) water wherein the initial concentration of the nitric acid in the water in the reactor is from about 50% to about 80% by weight, and the reactor is free of (1) added fuming nitric acid, (2) added chromium compounds when the metal is iron, and (3) added oxygen, and when the metal is nickel the reactor contains less than 500 g/l of any added nickel nitrate hexahydrate, and (B) maintaining the temperature within the reactor at a temperature to facilitate the formation of the metal nitrate and to maintain the produced metal nitrate in the molten state; (C) maintaining the pressure within the reactor at between atmospheric pressure up to about 100 psig; and (D) recovering the metal nitrate from the reactor, provided that when the metal is iron, any recovered iron nitrate is not recycled. The process of the present Invention results in the formation of metal nitrates and more particularly aqueous solutions of metal nitrates containing reduced amounts of ammonium nitrate.
摘要:
A process for the fixation of nitrogen comprising, combining a gaseous nitrogen and oxygen at a total pressure of above 100 atmospheres with a solid oxide which can produce a nitrate, in the presence of an oxide of silicon catalyst for the acceleration of a reaction between nitrogen and oxygen to produce nitrogen oxides, initially heating the combination to a temperature of between 600.degree. C. to 800.degree. C. and below the dissociation pressure of the nitrate to start an exothermic reaction for producing nitrogen oxides from the nitrogen and oxygen and for producing nitrate from the solid oxide and to establish an equilibrium between the nitrogen, oxygen, nitrogen oxides, solid oxide and nitrate. The reacting combination in equilibrium is then cooled and either the nitrate or the nitrogen oxides are removed from the reaction as products.