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A silver-magnesium doped alumina nano-material covered with nitrogenized graphite doped nanometer silica, a preparing method thereof and applications of the material

A nanomaterial and nanotechnology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, nanotechnology, etc., can solve the problems of rare or disclosed invention patents, and achieve good catalytic selection. high yield, good cycle performance

Inactive Publication Date: 2018-02-16
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there are not many literatures and invention patents applicable to the synthesis of carbon nanotubes, highly selective metal catalysts, or liquid phase synthesis technologies.

Method used

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  • A silver-magnesium doped alumina nano-material covered with nitrogenized graphite doped nanometer silica, a preparing method thereof and applications of the material
  • A silver-magnesium doped alumina nano-material covered with nitrogenized graphite doped nanometer silica, a preparing method thereof and applications of the material
  • A silver-magnesium doped alumina nano-material covered with nitrogenized graphite doped nanometer silica, a preparing method thereof and applications of the material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Graphite Nitride Doped Nano-SiO 2 Coated Ag-Mg doped Al 2 o 3 Nanomaterial, its preparation method comprises the steps:

[0057] Step 1, under stirring condition, to the aluminum sulfate (Al 2 (SO 4 ) 3 ) and concentration are in the silver nitrate solution of 0.05mol / L, the mixed solution of 0.01mol / L magnesium sulfate, drip concentration is the sodium hydroxide solution of 0.1mol / L, the pH value of control reaction system is 8.5, reacts 30 minutes, Obtain gray or gray-black Ag-Mg doped aluminum hydroxide sol, dry at 85°C for 9 hours, grind, wash with distilled water until the pH of the eluate is about 6.8, and dry to obtain gray-white or gray Ag-Mg doped with hydrogen Alumina gel, calcined at 350°C for 12 hours, then off-white or gray Ag-Mg doped Al can be obtained 2 o 3 Nano powder;

[0058] Step 2, the Ag-Mg that the step 2 of 30g obtains is doped with Al 2 o 3 Nano-powder with a mass equivalent to Ag-Mg doped Al 2 o 3 Nano powder mass 5% soluble chitosa...

Embodiment 2

[0061] Graphite Nitride Doped Nano-SiO 2 Coated Ag-Mg doped Al 2 o 3 Nanomaterial, its preparation method comprises the steps:

[0062]Step 1. Under stirring conditions, in the aluminum nitrate with a concentration of 0.75mol / L, the silver nitrate solution with a concentration of 0.1mol / L, and the mixed solution of magnesium nitrate with a concentration of 0.15mol / L, add the carbonic acid with a concentration of 0.5mol / L dropwise. Sodium solution, control the pH value of the reaction system to 9.5, react for 25 minutes to obtain gray or gray black Ag-Mg doped aluminum hydroxide sol, dry at 95°C for 6 hours, grind, wash with distilled water to the pH of the eluate About 7.0, dry to get off-white or gray Ag-Mg doped aluminum hydroxide gel, calcined at 450°C for 10 hours to get off-white or gray Ag-Mg doped Al 2 o 3 Nano powder;

[0063] Step 2, the Ag-Mg that the step 2 of 50g obtains is doped Al 2 o 3 Nano-powder with a mass equivalent to Ag-Mg doped Al 2 o 3 Nano powd...

Embodiment 3

[0066] Graphite nitride doped nano-SiO 2 Coated Ag-Mg doped Al 2 o 3 Nanomaterial, its preparation method comprises the steps:

[0067] Step 1. Under stirring conditions, in the mixed solution of aluminum chloride with a concentration of 1.0mol / L, a silver nitrate solution with a concentration of 0.15mol / L, and a mixed solution of magnesium chloride with a concentration of 0.2mol / L, carbonic acid with a concentration of 1.0mol / L is added dropwise Sodium hydrogen solution, control the pH value of the reaction system to 10.5, react for 15 minutes to obtain gray or gray black Ag-Mg doped aluminum hydroxide sol, dry at 105°C for 3 hours, grind, and wash with distilled water until the eluate The pH is about 7.2, dried to obtain off-white or gray Ag-Mg doped aluminum hydroxide gel, calcined at 550°C for 8 hours to obtain off-white or gray Ag-Mg doped Al 2 o 3 Nano powder;

[0068] Step 2, the Ag-Mg that the step 2 of 100g obtains is doped with Al 2 o 3 Nano-powder with a mass...

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Abstract

The invention belongs to the technical field of material synthesis, and particularly relates to a Ag-Mg doped Al2O3 nano-material covered with nitrogenized graphite doped nanometer SiO2, a preparing method thereof and applications of the material. The method includes 1) preparing Ag-Mg doped aluminum hydroxide sol through a liquid phase synthesis process, subjecting the sol to gelatinization to obtain Al-Mg doped aluminum hydroxide gel, and drying and roasting the gel to obtain Ag-Mg doped Al2O3 nanometer powder; and 2) preparing the Ag-Mg doped Al2O3 nanometer powder covered with silicic acidsol in which an organic matter is dissolved through a liquid phase synthesis process, subjecting the sol to gelatinization to obtain Ag-Mg doped Al2O3 nanometer powder covered with silicic acid gel in which the organic matter is dissolved, and drying and roasting the powder to obtain the Ag-Mg doped Al2O3 nano-material covered with nitrogenized graphite doped nanometer SiO2. The nano-material canbe used as various chemical synthesis catalysts, electrochemical synthesis catalysts, organic synthesis catalysts, lithium ion battery anode materials, chemical product additives, and the like.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, in particular to a graphite nitride doped nano-SiO 2 Coated Ag-Mg doped Al 2 o 3 Nanomaterials and their preparation methods and applications. Background technique [0002] Nano-Al 2 o 3 , nano-SiO 2 It has the characteristics of small particle size, many micropores, large specific surface area, high surface hydroxyl content, and many chemical activation points. Nano-Al 2 o 3 , nano-SiO 2 Adding it to various plastics can greatly improve the strength, toughness, wear resistance and aging resistance of plastic products. Nano-Al 2 o 3 , nano-SiO 2 It can also be widely used in catalysts, catalyst carriers, and carbon nanotubes, graphene and other advanced materials to synthesize catalyst carriers, lithium-ion battery negative electrode materials, ceramics, gypsum, cosmetics, glass fiber reinforced plastics, chemical fibers, plexiglass, environmental protection and many other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B82Y30/00B82Y40/00C01B32/162H01M4/36
CPCB01J23/002B01J27/24B82Y30/00B82Y40/00C01B2202/06H01M4/362Y02E60/10
Inventor 周环波梁娟聂航黄光艳刘亚林赵双琪邓帮君李必慧杨海平贺峥嵘
Owner HUBEI ENG UNIV
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