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A kind of preparation method of lead copper citrate complex
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A technology for lead-copper citrate and complexes, which is applied in the field of preparation of lead-copper citrate complexes, and can solve problems such as synthesis that has not yet been reported in literature
Active Publication Date: 2017-10-17
SHANGHAI WOKAI BIOTECH
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Problems solved by technology
[0002] Lead copper citrate is a double-base propellant burning rate catalyst, and its synthesis has not been reported in the literature
Method used
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[0032] 5) After the feeding is completed, the temperature is raised to 85±3°C, and the reaction is aged for 6Hr under the coupling action of ultrasonic wave and mechanical stirring;
[0033] 6) Cool to 45±5°C under the coupled action of ultrasonic and mechanical stirring, and centrifuge for solid-liquid separation;
[0034] 7) Wash the ...
Embodiment 2
[0037] 1) Dissolve 1 mole (3 equivalents of carboxylic acid) trisodium citrate in water, heat to 50±3°C, filter and set aside;
[0038] 2) Dissolve 1 mole (2 equivalents) of lead nitrate in water, heat to 45±3°C, and filter for later use;
[0039] 3) Dissolve 0.25 moles (1 equivalent) of copper nitrate in water, heat to 45±3°C, and filter for later use;
[0040] 4) Maintain the temperature of the trisodium citrate aqueous solution obtained in step 1) at 50±3° C., and add the lead nitrate solution in step 2) and the copper nitrate solution in step 3) sequentially under the coupling effect of ultrasonic waves and mechanical stirring;
[0041] 5) After the feeding is completed, the temperature is raised to 85±3°C, and the reaction is aged for 6Hr under the coupling action of ultrasonic wave and mechanical stirring;
[0042] 6) Cool to 45±5°C under the coupling action of ultrasonic wave and mechanical stirring, and centrifuge for solid-liquid separation;
[0046] 1) Dissolve 1 mole (3 equivalents of carboxylic acid) trisodium citrate in water, heat to 50±3°C, filter for later use;
[0047] 2) Dissolve 0.3 mole (0.6 equivalent) lead nitrate in water, heat to 45±3°C, filter for later use;
[0048] 3) Dissolve 1.2 moles (2.4 equivalents) of copper nitrate in water, heat to 45±3°C, and filter for later use;
[0049] 4) Maintain the temperature of the trisodium citrate aqueous solution obtained in step 1) at 50±3° C., and add the lead nitrate solution in step 2) and the copper nitrate solution in step 3) sequentially under the coupling effect of ultrasonic waves and mechanical stirring;
[0050] 5) After the feeding is completed, the temperature is raised to 85±3°C, and the reaction is aged for 6Hr under the coupling action of ultrasonic wave and mechanical stirring;
[0051] 6) Cool to 45±5°C under the coupling action of ultrasonic wave and mechanical stirring, and centrifuge for solid-liquid separation;
[0052] 7) Wash the solid...
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Abstract
The invention belongs to the field of synthesis of the organic chemical industry and particularly relates to a preparation method of a lead-copper citrate complex. According to the preparation method, a trisodium citrateaqueous solution is taken as a substrate, a nitrateaqueous solution with an equal equivalent weight of carboxyl is dropwise added sequentially under the action of ultrasonic waves, reactants are separated out and then subjected to heating, reaction ageing, centrifugation and microwavecouplingsteam heating rapid drying, and uniform biradical rocketsolid catalyst lead-copper citrate is obtained. According to the preparation method, citric acid and nitrate of lead and copper are adopted for a direct reaction, pollution by other ingredients cannot be caused, the condition that product precipitates include raw materials or by-product sodiumnitrate is prevented through mechanical stirring and ultrasonic coupling, and a product is uniform and pure; a microwavecouplingsteam heating rapid drying mode is adopted for drying, and the defect of inside and outside property difference caused by the fact that the outside is burnt and the inside is tender in a conventional drying manner is overcome; different copper-lead proportions are adopted, and a series of catalysts with different properties can be obtained by means of one process.
Description
technical field [0001] The invention belongs to the field of organic chemical synthesis, and in particular relates to a method for preparing a lead-copper citrate complex. Background technique [0002] Lead copper citrate is a double-base propellant burning rate catalyst, and its synthesis has not been reported in the literature. The preparation method of lead-copper citrate complex is the integration of new technology and various tools and means. [0003] Double-base propellantburn rate catalyst is an important national defense product, widely used in rockets, missiles and other equipment. Double base propellant has low burning rate and high burning rate index, so it is necessary to add burning rate catalyst to increase its burning rate. The double-base propellant burning rate catalyst can improve the propelling effect of the propellant, make the propellant launch along the optimal trajectory, reduce the content of nitrogen oxides after the propellant burns, increase the...
Claims
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