Device and method for preparing synthesis gas through electro-catalysis of methane-carbon dioxide

A carbon dioxide, electrocatalysis technology, applied in the field of electrocatalysis, can solve the problems of low energy efficiency of reforming technology, lack of industrial operation, and difficult operation.

Active Publication Date: 2021-06-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The conventional thermal catalytic reforming method needs to be carried out at high temperature, which requires high energy consumption, and the catalyst is easily deactivated due to sintering and carbon deposition, which is not conducive to industrialization
Plasma catalytic CH4-CO2 reforming technology has low energy efficiency, high equipment requirements, high cost, difficult operation, and lack of industrial operation

Method used

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  • Device and method for preparing synthesis gas through electro-catalysis of methane-carbon dioxide
  • Device and method for preparing synthesis gas through electro-catalysis of methane-carbon dioxide
  • Device and method for preparing synthesis gas through electro-catalysis of methane-carbon dioxide

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Experimental program
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Embodiment 1

[0054] An electrocatalytic methane-carbon dioxide synthesis gas device, reference figure 1 , comprising: a gas mixer 7, a DC high voltage power supply 8, an electrode 9, a thermocouple 10, an electrode plate 11, a reaction device 13, and a catalyst 12 is placed in the reaction device 13. The electrode plate 11 is placed above and below the catalyst 12; the thermocouple 10 is placed in the middle of the catalyst 12 through the electrode plate 11; It also includes a methane gas supply device 1, a carbon dioxide gas supply device 2, and a carrier gas gas supply device 3.

[0055] In this embodiment, the reaction device 13 is a tube furnace, and the inside of the tube furnace fixes catalysts and electrode plates through supporting devices.

[0056] In this embodiment, it also includes a flow meter 4 , a temperature measuring instrument 14 , a chromatograph 15 , a first three-way valve 5 , and a second three-way valve 6 .

[0057] Wherein said methane gas supply device 1 and carb...

Embodiment 2

[0059] A kind of preparation method of Fe, Ni doped carbon-based catalyst, reference figure 2 , including the following steps:

[0060] (1) Add 20g of coconut shell granular activated carbon into 280ml of deionized water, wash it in a water bath at 100°C, boil for 35min, cool to room temperature and filter, discard 30ml of the initial filtrate, and then measure it with a conductivity tester Conductivity of the remaining solution, after the measurement is completed, filter all the solution, add 280ml of deionized water again, repeat the above process, wash 8 times in total, and then dry, the drying temperature is between 105-110°C;

[0061] (2) Weigh the precursor compound of the redox active material with the mass ratio (1g) of Fe and Ni cations: Ni(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O, and be dissolved in the deionized water that the mass ratio of precursor compound and deionized water is 1:3.5, stir 200 under with glass rod;

[0062] (3) Take by weighing the 19g carr...

Embodiment 3

[0069] A method for producing synthesis gas from methane-carbon dioxide by electrocatalysis, comprising the steps of:

[0070] (1) Place the catalyst (activated carbon loaded with Fe and Ni) in the reactor, place the reactor in a tube furnace, set the furnace temperature to 400°C, and the heating rate to 10°C / min, turn on the carrier gas 3 and 3 Through the valve 6, the flow rate of the flow controller 4 is 100ml / min, forming the gas mixer 7-reactor 16 passage;

[0071] (2) When the furnace temperature reaches the preset value, open the reaction gas 1 and 2, open the three-way valve 5 at the same time, set the flow rate of the flow controller 4 to 50ml / min and 50ml / min respectively, and the reaction gas 1 and 2 and the carrier gas 3 are mixed in the gas mixer 7 and then enter the reactor 16;

[0072] (3) When the furnace temperature reaches the preset value, turn on the DC high-voltage power supply at the same time, set the current intensity to 1mA, and perform CH 4 -CO 2 T...

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Abstract

The invention relates to a device and method for preparing synthesis gas through electro-catalysis of methane-carbon dioxide. The device comprises a reaction device and a gas supply device; a catalyst filling area is arranged in the reaction device, electrode plates are arranged on the two sides of the catalyst filling area respectively, and the electrode plates on the two sides are connected with a positive electrode and a negative electrode respectively; the gas supply device is connected with a gas supply port of the reaction device, and a gas inlet of the reaction device is located on the outer side of the space formed by the electrode plates. The synthesis gas is prepared by utilizing electro-catalysis. A catalyst is placed in the filling area, the electrode plates are arranged on the two sides of the catalyst respectively, an electric field is formed between the two electrode plates, methane and carbon dioxide gas are subjected to catalytic reaction under the action of the electric field, and the device has the advantages of being low in reaction temperature and high in conversion rate.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis, and in particular relates to a device and method for electrocatalyzing methane-carbon dioxide to produce synthesis gas. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Since the industrial revolution, the human demand for fossil energy has been increasing day by day, but the combustion of fossil energy has emitted a large amount of CO 2 , thereby exacerbating the greenhouse effect. Natural gas is an efficient clean energy and an important chemical raw material; its main component is CH 4 Therefore, the rational use of natural gas for production and life has gradually become a hot to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/40C01B3/38
CPCC01B3/40C01B3/38C01B2203/0227C01B2203/1058C01B2203/1047C01B2203/1082C01B2203/1241Y02P20/52
Inventor 宋占龙陈科臻王文龙赵希强毛岩鹏孙静
Owner SHANDONG UNIV
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