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Benzoate-based burning rate catalyst containing dinuclear ferrocene group and preparation method of benzoate-based burning rate catalyst
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A burning rate catalyst, ferrocene-based technology, applied in chemical instruments and methods, metallocene, organic chemistry, etc., can solve problems such as complex synthesis process, achieve simple operation, good thermal stability, and improve thermal stability. Effect
Active Publication Date: 2019-03-08
SHAANXI NORMAL UNIV
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In 2012, Yuan Yaofeng and others used ferrocene as raw material to obtain propyl-bridged bis-ferrocene cyanonitrile and propyl-bridged bis-ferrocene tetrazole through formylation, condensation, dehydration and other processes, and tested the compound addition The combustion catalytic performance when added to ammoniumperchlorate shows that the decomposition peak temperature of ammoniumperchlorate is advanced by about 50°C after the addition, but its synthesis process is complicated
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Embodiment 1
[0025] Preparation of bis-(ferrocenylmethyl-1,2,3-triazolylmethyl) terephthalate with the following structural formula
[0026]
[0027] Add 0.2230g (1mmol) di-2-ynylpropyl terephthalate and 0.4931g (2.05mmol) azidomethylferrocene to a 250mL round bottom flask, 2 Add 30mL of methanol under the atmosphere, stir evenly, then add dropwise 15mL of an aqueous solution containing 0.077g (0.3mmol) coppersulfate pentahydrate and 15mL of an aqueous solution containing 0.0604g (0.3mmol) of sodium ascorbate, stir at room temperature for 24h, and filter to obtain a crude product. The crude product was separated by column chromatography to obtain bis-(ferrocenylmethyl-1,2,3-triazolylmethyl) terephthalate, the yield was 82%, and the structural characterization data was: FT-IR (cm -1 ):3431m, 3155m, 2955w, 1715vs, 1626m, 1383m, 1335m, 1265vs, 1106vs, 1044m, 933m, 801s, 718m, 490s; 1 H NMR (400MHz, CDCl 3 ):δ8.04(s,4H),7.59(s,2H),5.43(s,4H),5.30(s,4H),4.29(s,4H),4.23(s,4H),4.18(vs, 10...
[0031]In this embodiment, the di-2-ynylpropyl terephthalate in Example 1 is replaced with equimolar di-2-ynylpropyl phthalate, and the other steps are the same as in Example 1. Bis-(ferrocenylmethyl-1,2,3-triazolylmethyl) formate, the yield is 79%, and the structural characterization data is: FT-IR (cm -1 ):3427m, 3094m, 2955w, 1723vs, 1626w, 1445m, 1383m, 1272vs, 1120vs, 1058s, 940m, 822s, 753m, 635w, 490s; 1 H NMR (400MHz, CDCl 3 ): δ7.68(s,2H),7.62(s,2H),7.51(s,2H),5.30(s,8H),4.31(s,4H),4.19(s,14H).
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Abstract
The invention discloses a benzoate-based burning rate catalyst containing a dinuclear ferrocene group and a preparation method of the benzoate-based burning rate catalyst. A structural formula of theburning rate catalyst is as shown in the specification. The burning rate catalyst provided by the invention is unlikely to migrate or volatilize under natural conditions, is good in thermal stability,and has relatively high formation heat and combustion heat due to the introduction of a nitrogen-rich group; the energy level of a solidpropellant is increased when the burning rate catalyst is usedin the solidpropellant during combustion; and the burning rate catalyst has a relatively good combustioncatalysis effect on main components of the solidpropellant, namely ammoniumperchlorate andcyclonite. The burning rate catalyst provided by the invention has the advantages that the preparation method is simple to operate, the synthesis cost is low, and the defects of complicated synthesisprocess, high price, high cost and the like of the existing ferrocene and derivatives thereof are overcome.
Description
technical field [0001] The invention belongs to the technical field of solid propellants, in particular to a class of benzoic acid ester burning rate catalysts containing dinuclear ferrocene groups, and a preparation method for the burning rate catalysts. Background technique [0002] Solid propellant (solid gunpowder) has gradually developed as a composite type of energetic material for the purpose of propulsion. It mainly provides driving force for rockets, shells, guns, and missiles, and plays an important role in the development of missile and aerospace industries. It plays a very important role. Its performance plays a decisive role in the combat capability of weapons and missiles, and it occupies an important position in national defense science and technology. In order to ensure the ballistic performance of the solid rocket motor and the stable operation of the motor, most strategies and tactics hope that the burning rate pressure index of the solid propellant is low....
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