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NaBH4 hydrogen production catalyst Co-CoOx@C-rGO and preparation method thereof

A catalyst and ethanol dispersion technology, which is applied in the field of NaBH4 hydrogen production catalyst Co-CoOx@C-rGO and its preparation, can solve the problems of high cost, affecting large-scale use, and low reserves, so as to reduce activation energy and improve Catalytic activity, the effect of high catalytic activity

Active Publication Date: 2019-03-26
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although noble metal Pt and Ru catalysts have high catalytic activity, their reserves are low and their cost is high, which affects large-scale use

Method used

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  • NaBH4 hydrogen production catalyst Co-CoOx@C-rGO and preparation method thereof
  • NaBH4 hydrogen production catalyst Co-CoOx@C-rGO and preparation method thereof
  • NaBH4 hydrogen production catalyst Co-CoOx@C-rGO and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0027] The NaBH 4 The preparation method of the catalyst of hydrogen production, the steps are as follows:

[0028] (1), GO is put into ethanol, and stirring and ultrasonic are carried out alternately, obtain the ethanol dispersion liquid of GO;

[0029] (2), metal salt C 4 h 6 CoO 4 The aqueous solution of GO was added to the ethanol dispersion of GO, and then placed in a water bath at 80 °C and stirred for 10 h;

[0030] (3) Add the aqueous solution of glucose and continue to stir for 30 minutes, then transfer to a 500mL reaction kettle, and heat at 170°C for 12 hours;

[0031] (4), suction filtration, washing with water and ethanol, then freeze-drying for 24 hours;

[0032] (5) After grinding and freeze-drying, the solid is put into a tube furnace, and heated at 10°C min under a nitrogen atmosphere. -1 Raise the temperature, bake at 550-750°C for 1 hour, and collect the product to obtain the catalyst.

[0033] Preferably, in step (1), the concentration of the ethanol...

Embodiment 1

[0039] Catalyst Co-CoO x The preparation method of @C-rGO-550, the steps are as follows:

[0040] (1) Add GO (300mg) into ethanol (300mL), stir and ultrasonically carry out alternately for 2h to ensure uniform dispersion, and obtain the ethanol dispersion of GO, which is transferred to a three-necked flask (500mL);

[0041] (2), metal salt C 4 h 6 CoO 4 Aqueous solution (0.2M, 60mL) was added to the ethanol dispersion of GO, then placed in a water bath at 80°C and stirred for 10h;

[0042] (3) Add an aqueous solution (10 mL) of glucose (800 mg) to the above liquid, continue to stir for 30 minutes, then transfer to a 500 mL reaction kettle, and heat at 170°C for 12 hours;

[0043] (4), suction filtration, washing with water and ethanol, then freeze-drying for 24 hours;

[0044] (5) After grinding and freeze-drying, the solid is put into a tube furnace, and heated at 10°C min under a nitrogen atmosphere. -1 Raise the temperature, bake at 550°C for 1 hour, collect the produ...

Embodiment 2

[0046] The difference from Example 1 is that in step (5), the firing temperature is 650° C., and the others are the same as in Example 1.

[0047] The resulting target product number is Co-CoO x @C-rGO-650.

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Abstract

The invention discloses a NaBH4 hydrogen production catalyst Co-CoOx@C-rGO and a preparation method thereof. The molecular formula of the catalyst is Co-CoOx@C-rGO, and the structure of the catalyst is a carbon-shell-coated Co-CoOx nano-particle growing on an rGO chip. The preparation method comprises the following steps: completely dissolving GO into ethanol; adding a water solution of metal saltCH4H6CoO4 into ethanol dispersion liquid of GO, and stirring in a water bath; adding a glucose water solution, stirring, transferring to a reaction, carrying out hydrothermal reaction and suction filtration, and cleaning with water and ethanol; carrying out freeze drying for 24 hours; and putting ground solids into a tubular furnace, and roasting at 550-750 DEG C for 1 hour in a nitrogen atmosphere, so as to obtain Co-CoOx@C-rGO. The prepared catalyst has very high catalytic activity to the catalytic hydrogen production of NaBH4.

Description

technical field [0001] The invention belongs to the technical field of catalytic hydrogen production, in particular to a NaBH 4 Hydrogen production catalyst Co-CoO x @C-rGO and its preparation method. Background technique [0002] The growing demand for energy has prompted research on efficient, low-cost, and environmentally friendly alternative energy sources for industrial production. Hydrogen energy is the best alternative energy source for fossil fuels because of its advantages such as high energy density, environmental friendliness, abundant sources and renewable. [0003] NaBH 4 It is a good carrier of hydrogen energy and catalyzes NaBH 4 Hydrogen production has attracted widespread attention, and the catalytic NaBH 4 The research on catalysts for hydrogen production has become a research hotspot. The preparation cost and catalytic activity of the catalyst are the key issues affecting its application. Although the noble metal Pt and Ru catalysts have high cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J35/00B01J37/08B01J37/10C01B3/06
CPCC01B3/06B01J23/75B01J37/084B01J37/10B01J35/393Y02E60/36
Inventor 刘艳艳蒋剑春孙康
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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