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A kind of hydrogen evolution catalyst and preparation method thereof

A catalyst and hydrogen evolution technology, applied in the field of catalysis, can solve the problems of high price, limited large-scale application, etc., and achieve the effects of long activity and life, simple preparation process and high conductivity

Active Publication Date: 2019-01-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Pt-based catalysts exhibit excellent hydrogen evolution catalytic activity, their large-scale applications are limited due to their high cost.

Method used

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  • A kind of hydrogen evolution catalyst and preparation method thereof
  • A kind of hydrogen evolution catalyst and preparation method thereof
  • A kind of hydrogen evolution catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 6.75g (24.97mmol) of ferric chloride crystals (FeCl3 6H 2 O) Add to 75 mL of dimethylformamide (DMF), weigh 2.25 g (12.42 mmol) of 2-aminoterephthalic acid into 75 mL of dimethylformamide (DMF).

[0034] The two solutions were mixed, and then transferred to a 200 mL reaction kettle. The temperature of the reaction kettle was raised to 110 °C and the reaction was performed for 24 h.

[0035] The resulting product was washed several times with DMF and methanol by suction filtration. Put it in an oven to dry at 60°C for 12h. The precursors of C, N and Fe (NH2-MIL-101(Fe)) were obtained.

[0036] Weigh 1 g of the synthesized precursors of C, N and Fe and 1 g of glyphosate into 150 ml of DMF solution, and stir at 55 °C for 8 h.

[0037] The product was then washed several times by suction filtration with DMF and ethanol. Put it in an oven to dry at 60°C for 12h. After drying, a precursor containing C, Fe, P and N (NH2-MIL-101(Fe)-P) was obtained.

[0038] The syn...

Embodiment 2

[0041] Weigh 5.04g (12.49mmol) of ferric sulfate into 40mL of dimethylformamide (DMF), weigh 1.12g (6.21mmol) of 2-aminoterephthalic acid into 40mL of dimethylformamide (DMF) )middle.

[0042] The two solutions were mixed, and then transferred to a 100 mL reaction kettle. The temperature of the reaction kettle was raised to 120°C, and the reaction was carried out for 24 hours.

[0043] The resulting product was washed several times with DMF and methanol by suction filtration. Put it in an oven to dry at 60°C for 8h. The precursor (NH2-MIL-101(Fe)) for obtaining C, N and Fe was obtained.

[0044] 0.5 g of the synthesized Fe, N-containing material and 1 g of glyphosate were weighed into 80 ml of DMF solution, and stirred at 60° C. for 8 h.

[0045]The product was then washed several times by suction filtration with DMF and ethanol. Put it in an oven to dry at 60°C for 8h. After drying, a precursor containing C, Fe, P and N (NH2-MIL-101(Fe)-P) was obtained.

[0046] The syn...

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Abstract

A hydrogen evolution catalyst and a preparation method thereof belong to the field of catalysis. A new nitrogen and phosphorus co-doped hollow carbon / iron phosphide composite catalyst and its preparation method are proposed, which can ensure that the nitrogen source carbon source, phosphorus source, and iron source in the precursor are evenly mixed, and achieve nitrogen through one-step high-temperature pyrolysis. Phosphating, phosphating and carbonizing processes are used to prepare the inner wall of hollow carbon inlaid with transition metal phosphide. The catalyst has high catalytic activity, low hydrogen evolution overpotential in acidic aqueous solution, long cycle life, low raw material cost, and is easy to prepare.

Description

technical field [0001] The invention belongs to the field of catalysis, and in particular relates to a hydrogen evolution catalyst and a preparation method thereof. Background technique [0002] With the soaring demand for energy and increasing environmental pollution, traditional fossil energy will not meet people's needs, so we need to find a sustainable clean energy. Since hydrogen can be produced directly from water, coupled with its high energy density and no carbon dioxide emissions, it is considered the most likely replacement for traditional fossil fuels. Water electrolysis and photolysis of water are two effective ways to produce pure hydrogen. In particular, electrolysis of water to produce hydrogen has attracted widespread attention in recent years. The key to hydrogen production technology from water electrolysis lies in the development of low overpotential and durable electrocatalysts. Although Pt-based catalysts exhibit excellent hydrogen evolution catalytic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J37/082B01J35/33
Inventor 向中华郭佳宁程元徽李东明
Owner BEIJING UNIV OF CHEM TECH
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