Carbon supported nickel nitride catalyst and preparation method and application thereof

A nickel nitride and catalyst technology, applied in the field of catalysis, can solve the problem of poor selectivity for carbon dioxide reduction

Active Publication Date: 2016-09-21
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This indicates a very poor selectivity for carbon dioxide reduction

Method used

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  • Carbon supported nickel nitride catalyst and preparation method and application thereof
  • Carbon supported nickel nitride catalyst and preparation method and application thereof
  • Carbon supported nickel nitride catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051]The preparation method of carbon supported nickel nitride catalyst, the steps are as follows:

[0052] 1) Weigh 1g of nickel nitrate hexahydrate and 1g of VXC-72R conductive carbon black according to the mass ratio of 1:1, add them into 100mL of deionized water, and stir them thoroughly for 12 hours to obtain a uniformly mixed solution;

[0053] 2) Under the condition of 363K oil bath, the above solution was evaporated to dryness to obtain the nickel metal salt precursor Ni / VXC-72R supported by VXC-72R conductive carbon black;

[0054] 3) Dry the obtained Ni / VXC-72R precursor at 423K for 12 hours, and collect it for later use;

[0055] 4) Spread the dried Ni / VXC-72R precursor in a porcelain boat and place it in a tube furnace;

[0056] 5) Introduce ammonia gas for 20 minutes into the tube furnace at a flow rate of 120 mL / min;

[0057] 6) heating up to 973K at a heating rate of 5K / min, and reacting for 3h;

[0058] 7) The temperature was lowered to 573K at a cooling ra...

Embodiment 2

[0063] Repeat Example 1, the difference is that the temperature in step 6) is changed from 973K to 673K, and other conditions remain unchanged, and a carbon-supported nickel nitride catalyst is prepared, which is similar in form to Example 1.

Embodiment 3

[0065] Repeat Example 1, the difference is that the temperature in step 6) is changed from 973K to 773K, and other conditions remain unchanged, and a carbon-supported nickel nitride catalyst is prepared, which is similar in form to Example 1.

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Abstract

The invention relates to the field of catalysis and discloses a carbon supported nickel nitride catalyst. The catalyst mainly comprises nano nickel nitride particles which are loaded on carbon supports, and the particle size of the nano nickel nitride particles is 20-200nm. The invention further discloses a preparation method of the carbon supported nickel nitride catalyst. The carbon supported nickel nitride catalyst is prepared according to a temperature programmed control method and has advantages of high selectivity and high stability. The invention further discloses application of the carbon supported nickel nitride catalyst to electrocatalytic reduction of carbon dioxide into synthesis gas. Simultaneous implementation of catalyzed hydrolysis based hydrogen generation reaction and reduction reaction of carbon dioxide into carbon monoxide is realized in a water phase according to an electrochemical method to prepare synthesis gas. The carbon supported nickel nitride catalyst breaks through limits of hydrogen generation of nickel-based catalysts in the water phase, has excellent carbon dioxide reduction performance and provides a new approach for carbon dioxide reduction.

Description

technical field [0001] The present invention relates to the field of catalysis. More specifically, it relates to a carbon-supported nickel nitride catalyst, a preparation method and an application. Background technique [0002] The increasing depletion of fossil resources makes human beings face a new choice of sustainable renewable energy sources, such as wind energy, solar energy and other energy sources suitable for chemical energy storage / transmission. Renewable energy including CO and H 2 The synthesis of hydrocarbons through Fischer-Tropsch reaction, or the preparation of important chemicals such as methanol, dimethyl ether, and acetic acid, are also important raw materials for the industrial production of liquid fuels. At present, the main sources of synthesis gas are non-renewable resources such as natural gas and coal, which are not sustainable. Using electricity to achieve carbon dioxide reduction to produce syngas, the entire production process is sustainable, ...

Claims

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Application Information

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IPC IPC(8): B01J27/24C25B1/04C25B1/00C25B11/06
CPCB01J27/24C25B1/00C25B1/04C25B11/043Y02E60/36
Inventor 康鹏侯朋飞
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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