摘要:
The invention relates to a material, especially a glassy material of pyrophosphate type, corresponding to the general formula (I): {[(M 2+ ) 1 -x (R + ) 2x ] 2 [(P 2 O 7 4- ) 1-y (PO 4 3- ) 4y/3 ]} n(H 2 O) in which x and y are positive rational numbers each between 0 and 0.8; n is such that the weight percentage of water in the material is greater than 0 and less than or equal to 95; M 2+ represents a bivalent ion of a metal selected from calcium, magnesium, strontium, copper, zinc, cobalt, manganese and nickel, or any mixture of such bivalent ions and R + represents a monovalent ion of a metal selected from potassium, lithium, sodium, and silver, or any mixture of such monovalent ions. This material in particular proves quite advantageous for the manufacture of bone replacements or prosthesis coatings.
摘要:
A preparation method of a battery composite material includes steps of providing phosphoric acid, manganese carbonate, water and a first reactant; processing a reaction of the phosphoric acid, the manganese carbonate and the water to produce a first product; calcining the first product to produce a precursor, which is written by Mn 2 P 2 O 7 ; processing a reaction of the precursor and at least the first reactant to get a reaction mixture, and then calcining the reaction mixture to produce the battery composite material. As a result, the present invention achieves the advantages of reducing the times of the reduction-oxidation reaction, so that the stability of the processes is enhanced, and the difficulty of the processes is reduced.
摘要翻译:电池复合材料的制备方法包括提供磷酸,碳酸锰,水和第一反应物的步骤; 处理磷酸,碳酸锰和水的反应以产生第一产物; 煅烧第一种产物以产生由Mn 2 P 2 O 7制成的前体; 处理前体和至少第一反应物的反应以得到反应混合物,然后煅烧反应混合物以制备电池复合材料。 结果,本发明实现了减少还原氧化反应时间的优点,从而提高了工艺的稳定性,并且降低了工艺的难度。
摘要:
A producing method of a high-purity pyrophosphate comprising a calcination of the orthophosphate under the condition of 120°C - 350°C; and a producing method suitable for manufacturing effectively the high-purity melamine pyrophosphate.
摘要:
The invention relates to a method for detecting pyrophosphate by means of bioluminescence detection. Further, methods for measuring chemical, particularly enzyme catalyzed reactions are disclosed, in which pyrophosphate is formed or consumed. Such reactions are catalyzed, for example, by guanylyl cyclases, adenylyl cyclases, DNA or RNA polymerases. The novel methods are characterized by high sensitivity and low susceptibility to failure, are easily automated and miniaturized, and are further suitable for performing continuous measurements. In a particularly advantageous manner, the methods can be used in the fields of medical diagnostics and biomedical research, including pharmaceutical agent research.
摘要:
Provided is a metal phosphate showing high proton conductivity, which is useful for a fuel cell having higher output and produced at lower cost. The proton-conductive metal phosphate is a compound containing M, P and O, wherein M represents at least one selected from the group consisting of group 4A and group 4B elements in the long form of the periodic table, a part of M is substituted with a dopant element J J represents at least one selected from the group consisting of group 3A, group 3B, group 5A and group 5B elements in the long form of the periodic table and at least contains an element selected from B, Al, Ga, Sc, Yb, Y, La, Ce, Sb, Bi, V, Ta and Nb.
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 °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,在100-200℃的温度范围内,在蒸汽压力为10-200mbar的潮湿空气中,将细粉末形式的Na / P比为1:2的玻璃态酸性聚磷酸钠 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 concentrated aqueous alkali metal polyphosphate solution is prepared by adding polyphosphoric acid having a P₂O₅ assay of about 82% to about 85% to a quantity of concentrated aqueous alkali metal hydroxide sufficient to neutralize the acid. The resulting polyphosphate solution is richer in pyrophosphate and tripolyphosphate moieties than the acid.
摘要:
Novel processes are provided for producing anhydrous dicalcium phosphate (DCPA) and the gamma and beta forms of calcium pyrophosphate (CPP) from the reaction of phosphoric acid and lime. Dentifrice compositions containing the resultant phosphates are also disclosed.
摘要:
Bei einem Verfahren zur Herstellung von Alkaliphosphaten, insbesondere von Alkalipolyphosphaten, aus Alkaliphosphatlösungen oder - suspensionen werden die Ausgangsprodukte In einem Turm durch eine von einem Brenner-kranz erzeugte Flammzone versprüht. Dabei erfolgt das Versprühen mittels mehrerer Einstoffdüsen bei Vordrucken der Alkaliphosphatlösungen oder -suspensionen von 6 bis 66 bar. Eine Vorrichtung zur Durchführung des Verfahrens besteht aus einem mit einem Deckel 2 verschlossenen, zylindrischen und unten spitz zulaufenden Sprühturm 1. Dabei ist der Deckel mittig von einem mit einer Versprüheinrichtung 6 verbundenen Lösungszuführungsrohr 5 durchdrungen. Weiterhin ist der Deckel 2 von mehreren konzentrisch um das Lösungszuführungsrohr 5 angeordneten Brennern durchdrungen. Die Versprüheinrichtung besteht aus einem Speiserohr 15 und mindestens einem Sprühkopf 12, in dessen Stimfläche 13 mehrere Einstoffdüsen 17 eingelassen sind. Im Lösungszuführungsrohr 5 befindet sich mindestens eine Druckerhöhungspumpe 7.