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Iron-supported zinc aluminate nano powder and preparation method thereof

A nano-powder, zinc aluminate technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problem of low bonding strength, achieve simple and reliable operation process, high controllability, powder particle size uniform effect

Inactive Publication Date: 2018-12-28
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The nano-powder uses zinc salt, iron salt, and aluminum salt as raw materials, and uses surfactant cetyltrimethylammonium bromide (CTAB) to assist the hydrothermal method to prepare ZnAl 2 o 4 Powder, obtained ZnAl 2 o 4 The powder is placed in an iron salt solution and subjected to magnetic stirring, ultrasonic-assisted wet impregnation, drying, and sintering to obtain iron-loaded zinc aluminate nanopowder; the iron-loaded zinc aluminate nanopowder of the present invention can improve the The problem of uniformity and low bonding strength between the load and the carrier, the particle size of the nano-powder is 20nm~200nm, and the shape is spherical

Method used

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  • Iron-supported zinc aluminate nano powder and preparation method thereof
  • Iron-supported zinc aluminate nano powder and preparation method thereof
  • Iron-supported zinc aluminate nano powder and preparation method thereof

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Embodiment 1

[0034] The iron-supported zinc aluminate nanopowder is prepared from zinc salt, aluminum salt, and iron salt as raw materials and adding surfactants. The particle size of the nanopowder is 20-200nm, and the surface of the nanopowder contains Fe. 2+ and Fe 3+ ion.

[0035] The preparation method of the iron-loaded zinc aluminate nanopowder, its specific steps include as follows:

[0036] Step 1, zinc salt (Zn(NO 3 ) 2 ·6H 2 O), aluminum salt (Al(NO 3 ) 3 9H 2 O) and surfactant (cetyltrimethylammonium bromide) were dissolved in deionized water to obtain a solution (the molar ratio of zinc salt, aluminum salt, surfactant and deionized water was 1:2:0.5:625 ), using concentrated ammonia water to adjust the pH value of the solution to 9, and magnetically stirred at room temperature for 4 hours; then at 180°C for 18 hours, a white precipitate was obtained, and the white precipitate after liquid-solid separation was repeatedly washed with ethanol and deionized water for 5 time...

Embodiment 2

[0040] The iron-supported zinc aluminate nanopowder is prepared from zinc salt, aluminum salt, and iron salt as raw materials and adding surfactants. The particle size of the nanopowder is 20-200nm, and the surface of the nanopowder contains Fe. 2+ and Fe 3+ ion.

[0041] The preparation method of the iron-loaded zinc aluminate nanopowder, its specific steps include as follows:

[0042] Step 1, zinc salt (Zn(NO 3 ) 2 ·6H 2 O), aluminum salt (Al(NO 3 ) 3 9H 2 O) and surfactant (cetyltrimethylammonium bromide) were dissolved in deionized water to obtain a solution (the molar ratio of zinc salt, aluminum salt, surfactant and deionized water was 1:2:0.5:625 ), using concentrated ammonia water to adjust the pH value of the solution to 9, and magnetically stirred at room temperature for 4 hours; then at 180°C for 18 hours, a white precipitate was obtained, and the white precipitate after liquid-solid separation was repeatedly washed with ethanol and deionized water for 5 time...

Embodiment 3

[0046] The iron-supported zinc aluminate nanopowder is prepared from zinc salt, aluminum salt, and iron salt as raw materials and adding surfactants. The particle size of the nanopowder is 20-200nm, and the surface of the nanopowder contains Fe. 2+ and Fe 3+ ion.

[0047] The preparation method of the iron-loaded zinc aluminate nanopowder, its specific steps include as follows:

[0048] Step 1, zinc salt (Zn(NO 3 ) 2 ·6H 2 O), aluminum salt (Al(NO 3 ) 3 9H 2 O) and surfactant (cetyltrimethylammonium bromide) were dissolved in deionized water to obtain a solution (the molar ratio of zinc salt, aluminum salt, surfactant and deionized water was 1:2:0.5:625 ), using concentrated ammonia water to adjust the pH value of the solution to 9, and magnetically stirred at room temperature for 4 hours; then at 180°C for 18 hours, a white precipitate was obtained, and the white precipitate after liquid-solid separation was repeatedly washed with ethanol and deionized water for 5 time...

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Abstract

The invention relates to an iron-supported zinc aluminate nano powder and a preparation method thereof, and belongs to the technical field of powder material preparation. The nano powder is prepared by taking zinc salt, aluminum salt and iron salt as raw materials and adding a surfactant. The particle size of the nano powder is 20-200 nm, and the surface of the nano powder contains Fe2+ and Fe3+ ions. The nano powder takes the zinc salt, cobalt salt and the aluminum salt as raw materials, ZnAl2O4 powder is prepared from a surfactant cetyltrimethylammonium bromide (CTAB) under the assistance ofa hydrothermal method, and the obtained ZnAl2O4 powder is placed in an iron salt solution to undergo magnetic stirring, ultrasound-assisted wet process dipping, drying and sintering to obtain the iron-supported zinc aluminate nano powder. According to the iron-supported zinc aluminate nano powder, the problems that an iron load is uneven and the bonding strength of a load and a carrier is not high can be solved, the nano powder has a particle size of 20 nm to 200 nm, and the morphology is spherulitic.

Description

technical field [0001] The invention relates to an iron-loaded zinc aluminate nanopowder and a preparation method thereof, belonging to the technical field of powder material preparation. Background technique [0002] Zinc aluminate has good physical and chemical properties, such as good chemical stability, wear resistance, corrosion resistance, small thermal expansion coefficient, good mechanical properties, thermal shock stability and radiation resistance, etc. It can be used in the fields of catalyst, catalyst carrier, refractory material, optical material and humidity sensor. [0003] In the preparation method of zinc aluminate powder, hydrothermal method is a common method for preparing nanometer powder. The traditional hydrothermal method is a method of preparing zinc aluminate by subjecting organic or inorganic compounds to solution, hydrothermal reaction, drying, roasting and other processes. The hydrothermal reaction process is based on the hydrolysis of metal sal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02C01G49/00B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C01F7/02C01G49/00C01G49/0045C01P2002/72C01P2002/85C01P2004/03C01P2004/62C01P2004/64C01P2004/82
Inventor 谭红琳钱杰
Owner KUNMING UNIV OF SCI & TECH
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