Preparation method of three-dimensional self-supporting porous CuSn alloy catalyst for producing formic acid through carbon dioxide reduction

An alloy catalyst, carbon dioxide technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problems of large overpotential, poor product selectivity, etc. Small electrode overpotential, high selectivity, effect of increasing catalytic kinetics

Active Publication Date: 2020-09-15
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problems of poor product selectivity and large electrode overpotential in the electrolysis process of existing Cu-based catalysts, and provides a method for reducing carbon dioxide to produce Preparation method of three-dimensional self-supporting porous CuSn alloy catalyst for formic acid

Method used

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  • Preparation method of three-dimensional self-supporting porous CuSn alloy catalyst for producing formic acid through carbon dioxide reduction
  • Preparation method of three-dimensional self-supporting porous CuSn alloy catalyst for producing formic acid through carbon dioxide reduction
  • Preparation method of three-dimensional self-supporting porous CuSn alloy catalyst for producing formic acid through carbon dioxide reduction

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specific Embodiment approach 1

[0042] Embodiment 1: This embodiment is a method for preparing a three-dimensional self-supporting porous CuSn alloy catalyst for formic acid reduction by carbon dioxide reduction, which is carried out according to the following steps:

[0043] One, prepare the solution that copper sulfate and stannous sulfate coexist:

[0044] CuSO 4 and SnSO 4 Add to dilute H 2 SO 4 Stir and dissolve in the solution to obtain a solution in which copper sulfate and stannous sulfate coexist;

[0045] CuSO in the solution that described copper sulfate and stannous sulfate coexist 4 The concentration is 0.05mol / L~0.5mol / L;

[0046] In the solution that described copper sulfate and stannous sulfate coexist, SnSO 4 The concentration is 0.05mol / L~0.5mol / L;

[0047] 2. Electrodeposition:

[0048] Place the coexistence solution of copper sulfate and stannous sulfate in the electrolytic cell, use the Pt sheet as the counter electrode, and use the Cu sheet as the working electrode, at a current...

specific Embodiment approach 2

[0056] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the dilute H described in step one 2 SO 4 The concentration of the solution is 0.5mol / L-5mol / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0057] Specific embodiment three: the difference between this embodiment and one of the specific embodiments one or two is: the drying in the vacuum drying oven described in step three is specifically under the vacuum drying oven with a temperature of 20°C to 50°C, Dry 6h ~ 20h. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a CuSn alloy catalyst, and concretely relates to a preparation method of a three-dimensional self-supporting porous CuSn alloy catalyst for producing formic acid through carbon dioxide reduction. The invention aims to solve the problems of poor product selectivity and large electrode overpotential in the electrolysis process of the existing Cu-basedcatalyst. The method comprises the following steps: 1, preparing a copper sulfate and stannous sulfate coexisting solution; 2, electro-depositing; and 3, cleaning and drying. The preparation method is used for preparing the three-dimensional self-supporting porous CuSn alloy catalyst for producing formic acid through carbon dioxide reduction.

Description

technical field [0001] The invention relates to a preparation method of CuSn alloy catalyst. Background technique [0002] With the continuous acceleration of industrialization and urbanization, the demand for traditional fuels is increasing day by day, and the CO emissions 2 As a result, the global "greenhouse effect" continues to intensify, and human society is facing severe dual problems of "energy shortage" and "environmental pollution". increasing CO 2 It causes global warming and has a serious impact on many aspects such as agricultural production, ecological security, and energy security. Currently for CO 2 The treatment methods are mainly divided into two directions: one is to process CO2 through geological absorption 2 capture and storage; the second is to chemically catalyze CO 2 into low-carbon fuels with high added value. However, CO 2 Capture and storage have problems such as complex process, high transportation cost, lack of market and investment support...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/835B01J37/34C25B3/04C25B11/06C25B3/25
CPCB01J35/0033B01J23/835B01J37/348C25B11/04
Inventor 冯玉杰李达田妍
Owner HARBIN INST OF TECH
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