Preparation method and application of supported copper oxide catalyst

A technology of copper oxide and catalyst, applied in the field of supported copper oxide catalyst Ti2C-CuO-Cu2O, which can solve the problems of complex catalyst process and insignificant reduction

Active Publication Date: 2017-08-11
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these catalysts can reduce the high-temperature thermal decomposition temperature of ammonium perchlorate, the degree of reduction is not obvious, not exceeding 110 ° C, and the process of synthesizing and preparing these catalysts is relatively complicated

Method used

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  • Preparation method and application of supported copper oxide catalyst
  • Preparation method and application of supported copper oxide catalyst
  • Preparation method and application of supported copper oxide catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Ti 2 C-CuO-Cu 2 The preparation of O catalyst includes the following specific steps:

[0026] (1) Mix the titanium powder, aluminum powder, titanium carbide powder, and activated carbon in a molar ratio of 1.5:1.0:0.5:0.5 to a total mass of 50g, and add 5g of absolute ethanol to grind for half an hour, and then stand for 24 hours at 0.1Pa, Vacuum drying at 80°C for 40h, then pressing into pellets, and microwave sintering. The microwave sintering condition power is 2kW, frequency is 2.45GHz, and protected by flowing argon gas, heating rate is 80-100°C / min, heating temperature is 800 -850℃, time is 10 minutes.

[0027] (2) Grind the solid obtained in step one through a 500-mesh sieve, then weigh 2g of powder and 50ml of 20% hydrofluoric acid in a plastic bottle and let stand for 6 hours at room temperature for reaction. Centrifuge the deionized water for 5 times After drying

[0028] (3) Take the dried Ti 2 2g of C powder is placed in 100ml of aqueous solution, and the main co...

Embodiment 2

[0030] Thermal decomposition of pure ammonium perchlorate (AP) without adding any catalyst.

[0031] Take 1.5-2.0 mg of pure ammonium perchlorate with an average particle size of 100μm, place it in an open aluminum crucible, and put the crucible in a thermal differential analyzer. From room temperature to 500℃, the heating rate is 10-15℃ / min, nitrogen Atmosphere protection.

[0032] After testing, the endothermic peak of pure ammonium perchlorate is around 250°C, which corresponds to the crystal transition of ammonium perchlorate from the orthogonal phase to the cubic phase, and the exothermic peaks of pure ammonium perchlorate are at 350°C and 462.9°C. , Respectively correspond to the low temperature decomposition and high temperature decomposition of pure ammonium perchlorate.

Embodiment 3

[0034] Ti 2 C catalyzes the thermal decomposition of ammonium perchlorate (AP). The thermal decomposition steps are the same as in Example 2, with the addition of catalyst Ti 2 C.

[0035] Take the average particle size of 100μm pure ammonium perchlorate and the prepared Ti 2 C. Weigh 1.5-2.0 mg according to a mass ratio of 98:2, place it in an open aluminum crucible, put the crucible into a thermal differential analyzer, from room temperature to 500 ℃, the heating rate is 10-15 ℃ / min, nitrogen atmosphere protection.

[0036] After testing, Ti 2 C has a certain catalytic effect on the thermal decomposition of ammonium perchlorate, but the catalytic effect is not obvious. Ti 2 The addition of C makes the high temperature decomposition temperature of ammonium perchlorate 451.7°C, which reduces 11.2°C, and the weight loss temperature drops 12.4°C.

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Abstract

The invention discloses a supported copper oxide catalyst. A preparation method of the supported copper oxide catalyst includes weighing titanium powder, aluminum powder, titanium carbide powder and activated carbon powder according to the mole ratio of Ti to Al to C to TiC being 1.5:1.0:0.5:0.5, and subjecting the powder to microwave sintering to obtain high-purity compact Ti2AlC powder; grinding and sieving the Ti2AlC powder obtained after microwave sintering by an agate mortar to obtain 500-mesh powder; allowing the powder to react with hydrofluoric acid with the concentration of 20% for 6 hours, and performing deionized-water centrifugal drying to obtain a Ti2C material; subjecting the Ti2C to electroless copper plating and thermal oxidation to obtain the Ti2C-CuO-Cu2O catalyst. The supported copper oxide catalyst has the advantages that catalytic efficiency of ordinary copper oxide catalysts can be improved, high-temperature thermal decomposition temperature of ammonium perchlorate can be reduced remarkably, combustion efficiency can be improved, and catalytic efficiency is better than that of other catalysts.

Description

Technical field [0001] The invention relates to a supported copper oxide catalyst Ti 2 C-CuO-Cu 2 O. Background technique [0002] The most important resource that human beings lack today is energy. Energy is directly related to the development of a country and is closely related to people's lives. Especially after the founding of New China, our country has entered the age of industrialization from the era of agriculture, and the large-scale development of industrialization must rely on energy, so energy is particularly important. With the advent of the era of reform and opening up, my country’s economy has developed rapidly. The introduction of mechanization has simplified my country’s energy extraction and increased its energy storage capacity. However, this has also led to my country’s aggressive exploitation of energy, leading to the current energy Scarce situation. [0003] Ammonium perchlorate is an important oxidant for solid rocket thrusters. Its thermal decomposition temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J32/00B01J35/10B01J37/08B01J37/34B01J37/12B01J37/02B01J37/16C06B29/22C06B23/00
CPCB01J23/002B01J27/22B01J35/10B01J37/0219B01J37/088B01J37/12B01J37/16B01J37/346C06B23/007C06B29/22
Inventor 周卫兵朱远方刘磊朱教群
Owner WUHAN UNIV OF TECH
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