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2, 2', 3, 4, 4'-pentahydroxy benzophenone lead (II) and copper (II) binuclear chelate and preparation method thereof

A technology of lead pentahydroxybenzophenone and pentahydroxybenzophenone, which is applied in the preparation of aldehyde/ketone chelate, organic chemistry, fuel, etc., to achieve the effect of excellent catalytic platform effect

Inactive Publication Date: 2010-09-01
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous development of missile technology, the combustion catalysts currently used can no longer meet the requirements for the development of new solid propellants, and it is necessary to develop new high-efficiency combustion catalysts to meet the needs of the development of new solid propellants

Method used

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  • 2, 2', 3, 4, 4'-pentahydroxy benzophenone lead (II) and copper (II) binuclear chelate and preparation method thereof
  • 2, 2', 3, 4, 4'-pentahydroxy benzophenone lead (II) and copper (II) binuclear chelate and preparation method thereof
  • 2, 2', 3, 4, 4'-pentahydroxy benzophenone lead (II) and copper (II) binuclear chelate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) In a three-necked flask equipped with a stirrer and an HCl absorption system, add 4.62g 2,4-dihydroxybenzoic acid, 3.78g pyrogallic acid, and 5g anhydrous ZnCl 2 And 8ml POCl 3 Then 6ml of sulfolane was added.

[0018] (2) Start stirring to make it evenly mixed, heat to 70°C, and react at constant temperature for 2 hours.

[0019] (3) Slowly add water to the reaction flask and stir until all is dissolved, then pour into 300ml of ice water and stir thoroughly. The above solution was allowed to stand still for 30 minutes, filtered under normal pressure, and washed with water to obtain a crude product.

[0020] (4) Heat and dissolve the crude product in 200ml water, add activated carbon treatment, heat filtration, cooling, suction filtration, washing, drying, to obtain 2,2',3,4,4'-pentahydroxybenzophenone, which is Yellow-green needle-like crystals with a yield of 80.4%. The product uses FTIR spectrum and 1 HNMR spectrum to analyze its structure.

[0021] (5) Weigh 10g of 2,...

Embodiment 2

[0025] The basic formula of the double-base propellant is: nitrocellulose (NC, 12.0% N) 59%, digested glycerin (NG), 30%, diethyl phthalate (DEP) 8.5%, No. 2 medium fixed agent (C 2 ) 2.0%, other additives 0.5%.

[0026] The basic formula of the modified double-base propellant is: 66% of the double-base adhesive, 26% of RDX (RDX), No. 2 medium-sized agent (C 2 ) 2.0%, other additives 6%.

[0027] The samples were prepared according to the conventional solvent-free stretch forming process of absorption, flooding, ripening, calendering, and cutting into medicine strips. The medicinal material is mixed according to 500g, the catalyst is an external amount, and the added amount is 3.0%; the control blank propellant sample does not contain the catalyst.

[0028] The burning rate is measured by the target line method. The sides of the treated small grains of Φ5×150mm were impregnated and coated with polyvinyl alcohol solution for 6 times and dried, and then the burning rate was tested in ...

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PUM

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Abstract

The invention discloses 2, 2', 3, 4, 4'-pentahydroxy benzophenone lead (II) and copper (II) binuclear chelate and a preparation method thereof. The components of the 2, 2', 3, 4, 4'-pentahydroxy benzophenone lead (II) and copper (II) binuclear chelate are Cu2+, Pb2+ and 2, 2', 3, 4, 4'-pentahydroxy benzophenone, and the weight proportions are as follows: 34-41 percent of Cu2+ and Pb2+ (wherein 6-24 percent of Cu2+ and 76-94 percent of Pb2+) and 59-66 percent of the 2, 2', 3, 4, 4'-pentahydroxy benzophenone. The preparation method is as follows: taking 2, 4-dihydroxy-benzoic acid, pyrogallic acid and POC13 as raw materials, taking anhydrous ZnCl2 as a catalyst and sulfolane as a solvent and reacting under heating and stirring to obtain the 2, 2', 3, 4, 4'-pentahydroxy benzophenone. The 2, 2', 3, 4, 4'-pentahydroxy benzophenone is mixed with soluble copper salt and lead salt solution, and then the product is prepared after the processes of stirring, heating reflux, standing, washing, filtering and the like. As combustion catalyst, the prepared 2, 2', 3, 4, 4'-pentahydroxy benzophenone lead (II) and copper (II) binuclear chelate has high catalytic platform effect for combustion of double-base or modified double-base propellant.

Description

Technical field [0001] The invention relates to a 2,2',3,4,4'-pentahydroxybenzophenone lead(II) copper(II) binuclear chelate (abbreviated as: PPLC) and a preparation method thereof. The 2,2',3,4,4'-pentahydroxybenzophenone lead(II) copper(II) binuclear chelate can be used as the combustion catalyst of the double-base propellant. technical background [0002] Double-base propellants and modified double-base propellants are a type of high-energy fuel used in rockets and missiles. However, the disadvantages of the double-base propellant are its low burning rate and high pressure index, and it needs to be adjusted by adding a combustion catalyst. The combustion catalyst used in double-base propellant is mainly lead compound. The addition of lead compound can not only increase the burning rate of the propellant and reduce the pressure index, but also produce "platform" or "meta" combustion characteristics. Studies have found that the catalytic effects of organic lead salts and lead ...

Claims

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Application Information

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IPC IPC(8): C07C49/83C07C45/77C10L1/185
Inventor 洪伟良赵凤起刘剑洪田德余高红旭仪建华徐司雨刑晓玲
Owner SHENZHEN UNIV
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