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NiO/Ni catalyst and preparation method and application thereof

A catalyst and application technology, applied in the field of electrocatalysis, can solve problems such as limited utilization, and achieve the effects of simple operation, high stability and strong anti-interference ability.

Active Publication Date: 2018-07-27
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the main component of natural gas, methane is rich in resource reserves. However, the current utilization of natural gas is mainly direct combustion, and the utilization rate is limited. Therefore, how to fully develop and utilize natural gas resources is the direction of research by many researchers.

Method used

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  • NiO/Ni catalyst and preparation method and application thereof

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Effect test

Embodiment 1

[0023] Using a three-electrode system, mercury-mercury oxide is used as a reference electrode, platinum wire is used as a counter electrode, and NiO / Ni obtained through linear scanning and linear cyclic voltammetry is used as a working electrode, and the scanning speed is 1mV / s, and the number of scanning cycles is 500 , the range is 0 to 0.7v, the methane of 10mL / Min flow rate is passed into the 0.1mol / L NaOH solution, uses the potentiostatic method to carry out electrolysis reaction, and the applied voltage is 0.2V, and the output of ethanol is 60.3μmol / (g· h), the whole process is simple to operate, high in stability and stable in product quantity.

Embodiment 2

[0025] Using a three-electrode system, mercury-mercury oxide is used as a reference electrode, platinum wire is used as a counter electrode, and NiO / Ni obtained through linear scanning and linear cyclic voltammetry is used as a working electrode, where the scanning speed is 100mV / s and the number of scanning cycles is 500 , the range is 0 to 0.7v, the methane of 10mL / Min flow rate is passed into the 0.1mol / L NaOH solution, uses the potentiostatic method to carry out electrolysis reaction, and the applied voltage is 0.2V, and the output of ethanol is 25.8μmol / (g· h), the whole process is simple to operate, high in stability and stable in product quantity.

Embodiment 3

[0027] Using a three-electrode system, mercury-mercury oxide is used as a reference electrode, platinum wire is used as a counter electrode, and NiO / Ni obtained through linear scanning and linear cyclic voltammetry is used as a working electrode, and the scanning speed is 1mV / s, and the number of scanning cycles is 500 , the range is 0 to 0.7v, the methane of 10mL / Min flow rate is passed into the 0.1mol / L NaOH solution, uses the potentiostatic method to carry out electrolysis reaction, and the applied voltage is 1.0V, and the output of ethanol is 37.5μmol / (g· h), the whole process is simple to operate, high in stability and stable in product quantity.

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Abstract

The invention provides an NiO / Ni catalyst and a preparation method and application thereof. Oxidized NiO and reduced Ni of foam Ni adhere to foam Ni through a linear sweep voltammetry and a linear cyclic voltammetry, the NiO / Ni catalyst is formed, and the NiO / Ni catalyst has good electrical conductivity in a three-electrode system and an alkaline solution condition and can effectively catalyze methane. According to the NiO / Ni catalyst and the preparation method and application thereof, under a constant potential, the NiO / Ni catalyst can be utilized to effectively electrocatalyse methane, catalytic oxidation products of methane are carbon monoxide, methyl alcohol and ethyl alcohol, and particularly, forming of ethyl alcohol has important economic value for utilization of methane.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis, and relates to a NiO / Ni catalyst, a preparation method and application thereof. Background technique [0002] Methane is not only a high-quality gas fuel and clean energy, but also an important raw material for the manufacture of synthesis gas and many chemical products. As the main component of natural gas, methane is rich in resources. However, the current utilization of natural gas is mainly direct combustion, and the utilization rate is limited. Therefore, how to fully develop and utilize natural gas resources is the direction of many researchers' efforts. Especially in terms of electrocatalysis, researchers hope to use natural gas directly for electrocatalysis to convert methane into carbon-carbon compounds that are more useful to humans through direct electrooxidation. [0003] The direct electrocatalytic oxidation of methane at normal temperature and pressure is a slow research p...

Claims

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Application Information

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IPC IPC(8): C25B3/02C25B11/06C25B1/00C25B3/23
CPCC25B1/00C25B3/23C25B11/031C25B11/091
Inventor 南贵珍陈为魏伟孙予罕张佳舟马翠杰王白银李桂花宋艳芳
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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