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Nano silver catalyst for catalyzing hydrolysis of amino borane and preparation method thereof

A technology of aminoborane and nano-silver, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., and can solve the problem of few synthesis methods of nano-tetrametallic core-shell structures, etc. problem, achieve the effect of preventing aggregation, reducing cost and improving dispersion

Inactive Publication Date: 2014-07-23
SUZHOU INSTITUE OF WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, most of them focus on the research on the double-metal core-shell structure, but there are few reports on the synthesis method of the three-metal core-shell structure, and there are even fewer synthetic methods on the nano-tetrametallic core-shell structure.

Method used

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  • Nano silver catalyst for catalyzing hydrolysis of amino borane and preparation method thereof
  • Nano silver catalyst for catalyzing hydrolysis of amino borane and preparation method thereof
  • Nano silver catalyst for catalyzing hydrolysis of amino borane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of nano-Ag with different x values x co 1-x / graphene catalyst, where the molar ratio of Ag to Co is x:1-x, 0.1≤x≤0.9, a total of five sets of experiments.

[0044] Silver nitrate solution and cobalt chloride solution with concentrations of 0.05mol / L and 0.0225mol / L were prepared respectively. Take silver nitrate solution and cobalt chloride solution in a flask, add 10 mg of graphene oxide as a loading agent, after ultrasonic dispersion, add 2 mmol of reducing agent methylamine borane under electromagnetic stirring, and fully react at 25°C , to get nano-Ag x co 1-x / graphene catalyst, the addition of silver nitrate solution and cobalt chloride solution of five groups of experiments is as shown in table 1.

[0045] The addition of silver nitrate solution and cobalt chloride solution of five groups of experiments of table 1

[0046]

[0047] At the same time, the Ag / graphene catalyst was prepared, and 1.0 mL of silver nitrate solution with a concentr...

Embodiment 2

[0050] Preparation of nano-Ag with different x values x Ni 1-x / Graphene catalyst, wherein the molar ratio of Ag to Ni is x:1-x, x is 0.1≤x≤0.9, a total of five sets of experiments.

[0051] Silver fluoride solution and nickel acetate solution with concentrations of 0.05mol / L and 0.0225mol / L were prepared respectively. Take silver fluoride solution and nickel acetate solution in a flask, add 10 mg of graphene oxide as a loading agent, after ultrasonic dispersion, add 2 mmol of reducing agent methylamine borane under electromagnetic stirring, and fully react at 25 °C , to get nano-Ag x Ni 1-x / graphene catalyst. The addition amount of silver fluoride solution and nickel acetate solution of five groups of experiments is shown in Table 2.

[0052] The addition of silver fluoride solution and nickel acetate solution of five groups of experiments of table 2

[0053]

[0054] At the same time, the Ag / graphene catalyst was prepared, and 1.0 mL of silver fluoride solution wi...

Embodiment 3

[0057] Preparation of nano-Ag with different x values x Fe 1-x / Graphene catalyst, wherein the molar ratio of Ag to Fe is x:1-x, x is 0.1≤x≤0.9, a total of five sets of experiments.

[0058] Silver perchlorate and ferric nitrate are prepared into solutions, the concentrations of which are 0.05mol / L and 0.0225mol / L respectively. Take silver perchlorate solution and ferric nitrate solution in a flask, add 10 mg of graphene oxide as a loading agent, after ultrasonic dispersion is uniform, add 2 mmol of reducing agent methyl ammonia borane under electromagnetic stirring, at 25 ° C Fully react to get nano-Ag x Fe 1-x / graphene catalyst, the addition of silver perchlorate solution and ferric nitrate solution of five groups of experiments is as shown in table 3.

[0059] The addition of silver perchlorate solution and iron nitrate solution of five groups of experiments of table 3

[0060]

[0061]

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Abstract

The invention discloses a nano silver catalyst for catalyzing hydrolysis of amino borane and a preparation method thereof, and belongs to the field of hydrogen storage materials. The preparation method comprises the following steps: (1) adding graphene oxide, silicon dioxide, neutral aluminum sesquioxide, carbon black, calcium carbonate, cerium oxide or active carbon into a mixed solution of a soluble silver salt and a soluble M salt, and uniformly mixing to form a mixture; and (2) adding a reducing agent into the mixture under the condition of agitating, sufficiently reacting at 25-40 DEG C and purifying to obtain the nano silver catalyst for catalyzing hydrolysis of amino borane. The preparation method is simple, the preparation conditions are moderate and the production cost is low. The method can be used for preparing a bimetal, tri-metal or tetra-metal nano silver catalyst with a core-shell structure. The prepared nano silver catalyst is in the core-shell structure, and is large in specific surface area and good in catalytic performance.

Description

technical field [0001] The invention relates to a nano-silver catalyst for catalyzing the hydrolysis of aminoborane and a preparation method thereof, belonging to the technical field of hydrogen storage materials. Background technique [0002] Energy is an important material basis for the development of human society and economy, and the energy problem is one of the main problems facing mankind at present. At present, the main energy sources are fossil fuels such as oil and coal. With the continuous increase of energy demand and the continuous decline of fossil fuel reserves, the contradictions caused by this have become increasingly severe. At the same time, the environmental problems are becoming more and more severe. Hydrogen energy is a new type of clean energy with high calorific value and is one of the most ideal alternative energy sources. However, the storage and transportation of hydrogen energy are important factors restricting the economic development of hydrogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C01B3/04
CPCY02E60/36
Inventor 罗威杨兰程功臻
Owner SUZHOU INSTITUE OF WUHAN UNIV
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