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A high-voltage photoelectric catalytic reduction carbon dioxide experimental device

A carbon dioxide, photoelectric catalysis technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., can solve the problems of limiting the utilization prospect of photoelectric catalysis reflection system and being unable to withstand high pressure environment.

Active Publication Date: 2021-11-26
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing photocatalytic reaction systems can only operate under normal pressure and cannot withstand high pressure environments, which limits the application prospects of existing photocatalytic reaction systems

Method used

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  • A high-voltage photoelectric catalytic reduction carbon dioxide experimental device
  • A high-voltage photoelectric catalytic reduction carbon dioxide experimental device
  • A high-voltage photoelectric catalytic reduction carbon dioxide experimental device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to Figure 1~3 , which is the first embodiment of the present invention, provides a high-pressure photoelectric catalytic reduction carbon dioxide experimental device, which includes a gas supply assembly 100, a high-pressure reaction assembly 200, a data acquisition assembly 300 and a product collection assembly 400, wherein the gas supply assembly 100, including two channels 101, a high-pressure pump 102 arranged on the channel 101 for transmitting carbon dioxide, and four valves 103 symmetrically arranged on the two channels 101; a high-pressure reaction component 200, connected with the gas supply component 100, including reduction Reactor 201 and the simulation light source 202 that is connected with reduction reactor 201; Data acquisition assembly 300, is connected with reduction reactor 201, comprises electrochemical workstation 301 and data acquisition instrument 302; And, product collection assembly 400, and reduction reactor 201 connection, including a s...

Embodiment 2

[0038] refer to Figure 1~3 , is the second embodiment of the present invention, which is different from the first embodiment in that: the valve 103 can control the opening and closing of the inlet and outlet of the channel 101 .

[0039] Reduction reactor 201 comprises window flange 201a, quartz glass 201b connected with window flange 201a and anode chamber 201c, cathode chamber 201d connected with anode chamber 201c, arranged between anode chamber 201c and cathode chamber 201d Interchange piece 201e.

[0040] The window flange 201a is fixed to the anode chamber 201c by bolts 201a-1, a groove 201c-1 is opened in the center of the anode chamber 201c, and the quartz glass 201b is set in the groove 201c-1. The anode chamber 201c and the cathode chamber 201d are symmetrically provided with two through-holes 201c-2 respectively, the channel 101 is connected with the two through-holes 201c-2 on the side close to the high-pressure pump 102, and the two through-holes 201c-2 at the b...

Embodiment 3

[0049] refer to Figure 4-8 , is the third embodiment of the present invention, which is different from the second embodiment in that: in order to verify the enhancement effect of photoelectric reduction of carbon dioxide under high pressure, a gradient experiment from 1 atmospheric pressure to 90 atmospheric pressure was carried out . Such as Figure 4 , under high pressure (greater than 50 atmospheric pressure), the carbon dioxide reduction selectivity reaches 80%, much higher than 15% under normal pressure. It is proved that the selectivity of carbon dioxide reduction in high pressure environment is significantly improved.

[0050] The high-pressure carbon dioxide environment also has a significant regulatory effect on the performance of the catalyst. The experiment uses cuprous oxide as a precursor, which is first converted to copper in a high-pressure environment, followed by carbon dioxide reduction. As a comparison, using the same cuprous oxide as a precursor, it is...

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Abstract

The invention discloses a high-voltage photoelectric catalytic reduction carbon dioxide experimental device, which includes a gas supply component, a high-pressure reaction component, a data acquisition component, and a product collection component, wherein the gas supply component includes two channels, and the channel for transmitting carbon dioxide is arranged on the A high-pressure pump and four valves symmetrically arranged on two channels; a high-pressure reaction component, including a reduction reactor and an analog light source connected to the reduction reactor; a data acquisition component, including an electrochemical workstation and a data acquisition instrument; and, the product The collection assembly includes a sampling box and a vacuum pump connected to the sampling box; the high-pressure photoelectric catalytic reduction carbon dioxide experimental device in the present invention aims at the problem of low carbon dioxide reduction efficiency, and a high-pressure carbon dioxide reduction reactor is designed. Under high pressure, the reduction efficiency of carbon dioxide is increased from 10% under normal pressure to over 80% (carbon dioxide at 50 atmospheric pressure); in view of the problem of low copper catalyst activity, high-pressure carbon dioxide can significantly regulate the activity of copper catalyst.

Description

technical field [0001] The invention relates to the technical field of chemical energy, in particular to a high-voltage photoelectric catalytic reduction carbon dioxide experimental device. Background technique [0002] In recent years, with the massive consumption of fossil fuels, the content of carbon dioxide in the atmosphere has been increasing. The ensuing environmental problems such as the greenhouse effect have been the focus of discussions in various circles in recent years. Carbon dioxide emission reduction, capture and conversion is one of the hot spots in the academic circles. The public's demand for clean energy is also increasing. Solar energy is the ultimate source of energy on the earth and the most accessible clean energy. Using solar energy to convert carbon dioxide into carbon-containing organic matter (artificial photosynthesis) is one of the effective methods to solve energy and environmental problems at present. [0003] Photocatalytic reduction of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B3/26C25B3/03C25B1/23C25B1/55C25B3/21C25B9/00C25B11/075
CPCC25B9/00
Inventor 刘东邓楷冯浩张莹李强
Owner NANJING UNIV OF SCI & TECH
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