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A kind of magnesium oxide nanopowder doped with zinc and copper and preparation method thereof

A nano-powder, magnesium oxide technology, applied in magnesium oxide, nanotechnology, zinc oxide/zinc hydroxide and other directions, to achieve the effects of easy control of preparation parameters, fine grain size and simple preparation process

Active Publication Date: 2017-10-31
FUJIAN JIANGXIA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with other known catalytic additives, the performance of this material still needs to be further improved to make it more widely used

Method used

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Examples

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preparation example Construction

[0020] A zinc-copper-doped magnesium oxide nanopowder (general formula Mg 1-x Zn x-y Cu y O), its preparation method comprises the following steps:

[0021] 1) Weigh magnesium acetate, zinc acetate and copper acetate according to the molar ratio of magnesium, zinc, and copper ions as 1-x:x-y:y, dissolve them in water, and make a mixed solution of metal ions, wherein, 0.05≤x≤ 0.1, 0<y<x; then add citric acid to the metal ion mixed solution and mix well, the molar ratio of citric acid to total metal ions is 1.5-2.5:1;

[0022] 2) Adjust the pH value of the solution obtained in step 1) to 2-5, and then evaporate to remove water at 60-70°C to obtain a gel;

[0023] 3) heating and drying the gel obtained in step 2) to form a xerogel;

[0024] 4) Grinding the xerogel obtained in step 3), and heat-treating it in an argon atmosphere at 600-1000°C for 0.5-3 hours to obtain a black powder;

[0025] 5) Secondary heat treatment of the black powder obtained in step 4) in air at 500-90...

Embodiment 1

[0027] Embodiment 1, preparation general formula meets Mg 0.9 Zn 0.05 Cu 0.05 O Zn-Cu-doped MgO Nanopowders

[0028] Weigh magnesium acetate, zinc acetate and copper acetate according to the molar ratio of magnesium, zinc, and copper ions at 0.9:0.05:0.05, dissolve them in water, stir continuously to dissolve them fully, and prepare a clear mixed solution of metal ions. Add citric acid to the obtained mixed solution of metal ions and mix until the molar ratio of citric acid to total metal ions is 2.5:1; then use ammonia water to adjust the pH value of the solution to 2, evaporate and remove water at 70°C to obtain a yellow viscous gel; move the obtained gel to a constant temperature oven and heat at 120°C for 6 hours to obtain a fluffy xerogel; grind the xerogel in a mortar, place it in a tube furnace, and in an argon atmosphere, Calcined at 600°C for 0.5 hours to obtain a black powder; calcined the obtained black powder in an air atmosphere at 900°C for 0.5 hours to obtain...

Embodiment 2

[0031] Embodiment 2, preparation general formula meets Mg 0.9 Zn 0.02 Cu 0.08 O Zn-Cu-doped MgO Nanopowders

[0032] Weigh magnesium acetate, zinc acetate, and copper acetate according to the molar ratio of magnesium, zinc, and copper ions at 0.9:0.02:0.08, dissolve them in water, stir continuously to dissolve them fully, and prepare a clear mixed solution of metal ions. Add citric acid to the obtained mixed solution of metal ions and mix until the molar ratio of citric acid to total metal ions is 2.5:1; then use ammonia water to adjust the pH value of the solution to 2, and evaporate the water at 70°C to obtain a yellow viscous gel; move the obtained gel to a constant temperature oven and heat at 120°C for 6 hours to obtain a fluffy xerogel; grind the xerogel in a mortar, put it in a tube furnace, and in an argon atmosphere, Calcined at 1000°C for 3 hours to obtain a black powder; calcined the obtained black powder in an air atmosphere at 900°C for 3 hours to obtain the ge...

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Abstract

The invention discloses a zinc-copper-doped magnesium oxide nanopowder and a preparation method thereof. The zinc-copper is prepared by using magnesium acetate, zinc acetate and copper acetate as raw materials through mixing, evaporation, drying and two heat treatments. Doped magnesium oxide nanopowder, containing magnesium oxide, zinc oxide and copper oxide in the zinc copper doped magnesium oxide nanopowder, its general formula is Mg1‑xZnx‑yCuyO, wherein, 0.05≤x≤0.1,0

Description

technical field [0001] The invention belongs to the technical field of high-energy solid propellants, and in particular relates to zinc-copper-doped magnesium oxide nanopowder and a preparation method thereof. Background technique [0002] The catalytic thermal decomposition of ammonium perchlorate plays an important role in the fields of aerospace, space exploration and satellite launch, because ammonium perchlorate is an important oxidant in rocket solid composite propellants, and its combustion behavior is extremely The ground affects the trajectory of the rocket flight. In order to increase the energy level of the propellant, additives can be added to the propellant formula. The additives can achieve efficient thermal decomposition of ammonium perchlorate at a relatively low temperature, so as to increase the fuel temperature to obtain high specific impulse and characteristic velocity. A large number of additives have been studied and some have been found to have excell...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F5/02C01F5/06C01G9/02C01G3/02B82Y40/00
Inventor 关翔锋余运龙罗培辉张禹陈达贵张炜龙
Owner FUJIAN JIANGXIA UNIV
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