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 and limited large-scale application, and achieve the effects of long activity and life, simple preparation process and high conductivity

Active Publication Date: 2016-12-14
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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  • Hydrogen evolution catalyst and preparation method thereof
  • Hydrogen evolution catalyst and preparation method thereof
  • Hydrogen evolution catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0034] The two solutions were mixed, then transferred to a 200mL reactor, and the reactor was heated to 110°C for 24 hours of reaction.

[0035] The resulting product was washed with suction several times with DMF and methanol. Dry in an oven at 60°C for 12 hours. The precursor of C, N, Fe (NH2-MIL-101(Fe)) was obtained.

[0036] Weigh 1 g of the synthesized C, N, Fe precursors 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 with suction several times with DMF and ethanol. Dry in an oven at 60°C for 12 hours. Dry to obtain a precursor containing C, Fe, P, N (NH2-MIL-101(Fe)-P).

[0038] The synthesized precursors containing C, Fe, P, and N were moved into a high-temperature furnace for burning, an...

Embodiment 2

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

[0042] The two solutions were mixed, and then transferred to a 100mL reactor, and the reactor was heated to 120°C for 24 hours of reaction.

[0043] The resulting product was washed with suction several times with DMF and methanol. Dry in an oven at 60°C for 8 hours. A precursor (NH2-MIL-101(Fe)) for obtaining C, N, Fe was obtained.

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

[0045]The product was then washed with suction several times with DMF and ethanol. Dry in an oven at 60°C for 8 hours. Dry to obtain a precursor containing C, Fe, P, N (NH2-MIL-101(Fe)-P).

[0046] The synthesized materials containing Fe, P, and N were moved into a high-temperature furnace for firing, and the ar...

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Abstract

A hydrogen evolution catalyst and a preparation method thereof belong to the field of catalysis. Provided are a novel nitrogen-and-phosphor-codoped hollow carbon / iron phosphide composite catalyst and a preparation method thereof. According to the method, uniform mixing of a nitrogen source, a carbon source, a phosphor source, an iron source in a precursor are ensured, and a process of nitridation, phosphatization and carbonization is achieved through one-step high-temperature pyrolysis to prepare a phosphide having a hollow carbon inner wall inlaid with transition metal. The catalyst is high in catalytic activity, low in hydrogen evolution over potential, and prolonged in cycle life. The catalyst is low in cost of raw materials and 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 sharp increase of people's demand for energy and the increasing environmental pollution, traditional fossil energy will not be able to 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 to replace traditional fossil fuels. Electrolysis of water and photolysis of water are two effective ways to produce pure hydrogen. In particular, water electrolysis for hydrogen production has attracted extensive attention in recent years. The key to hydrogen production from water electrolysis lies in the development of low overpotential and persistent electrocatalysts. Although Pt-based catalysts exhibit excellent hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/0033B01J37/082
Inventor 向中华郭佳宁程元徽李东明
Owner BEIJING UNIV OF CHEM TECH
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