Application of bimetallic alloy in anti-carbon-deposition methane steam reforming catalyst

A reforming catalyst, carbon deposition methane technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, non-metallic elements, etc., can solve the problem of high price, NiAg and NiCu alloy cannot exist stably And other issues

Active Publication Date: 2020-10-30
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0003] In addition, in the literature Journal of Power Sources 242(2013) 762-767, P.Zuo et al. proposed to use the combination of C* and C* on the catalyst surface to form The activation energy of C2* molecules judges the anti-carbon deposition performance of the catalyst, and s...

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  • Application of bimetallic alloy in anti-carbon-deposition methane steam reforming catalyst
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  • Application of bimetallic alloy in anti-carbon-deposition methane steam reforming catalyst

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Embodiment Construction

[0018] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0019] A bimetallic alloy for an anti-coking methane steam reforming catalyst, the bimetallic alloy is composed of two metals, and the general formula is A x B y , wherein, A is one of Fe, Co, Ni, and B is one of Ga, Zn, Sn.

[0020] In order to ensure that the activity of the alloy is higher than that of the noble metal Pt, alloy A x B y In x≥y, in order to ensure the anti-carbon performance of the material, usually x≤3y.

[0021] Such as figure 1 As shown, the methane water vapor reforming activity on the surface of the catalyst can be determined according to the adsorption energy of carbon and oxygen on the surface, where the curve marked with the value is the isoactivity line, the number on the line is the activity, and the value is expressed by Log 10 r is obtained, where r is the reaction rate, the unit is mol / cm 2 / s; Accordi...

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Abstract

The invention discloses a bimetallic alloy for an anti-carbon-deposition methane steam reforming catalyst, the bimetallic alloy is composed of two metals, the general formula is AxBy, A is one of Fe,Co and Ni, and B is one of Ga, Zn and Sn; and 3y > = x > = y; the invention also relates to an application of the bimetallic alloy in the anti-carbon-deposition methane steam reforming catalyst. The invention has the beneficial effects that Fe, Co, Ni and Ga, Sn and Zn alloys are used as methane steam reforming catalysts, so that the price is low; Fe, Co, Ni, Ga, Sn and Zn have a large number of stable alloy phases, and the synthesis method is simple; the activation sites on the surface of the alloy are moderate in carbon and oxygen adsorption capacity and have high methane steam reforming activity; as sites with strong carbon adsorption capacity and sites with weak adsorption capacity on the surface of the alloy appear alternately, carbon atoms on the surface are dispersed on the surfaceof the catalyst, and the catalyst has good carbon deposition resistance.

Description

technical field [0001] The invention relates to a bimetallic alloy, in particular to the application of the bimetallic alloy in a carbon-deposition-resistant methane water vapor reforming catalyst, and belongs to the technical field of carbon-deposition-resistant methane water vapor reforming catalysts. Background technique [0002] At present, the world's energy is scarce, and hydrogen is an important green new energy. As an economical and efficient hydrogen production method, methane steam reforming has attracted more and more attention from domestic and foreign researchers. For example, in the document Journal of Catalysis, 1993, 144(1): 38-49, J.R.Rostrup-Nielsen and J-H.Bak Hansen proved through experiments that Ni has a high methane steam reforming activity, but the surface is extremely easy to deposit carbon; The noble metals Pt and Pd have good methane steam reforming activity and can resist carbon deposition. However, the price of precious metals limits their appli...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/42B01J23/825B01J23/80C01B3/40
CPCB01J23/755B01J23/42B01J23/825B01J23/80C01B3/40Y02P20/52
Inventor 柯昌明林子敬
Owner UNIV OF SCI & TECH OF CHINA
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