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A kind of preparation method of hydrogen production catalyst by steam reforming of methane

A methane water vapor, reforming hydrogen production technology, applied in the direction of catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of high cost, high price, easy carbon deposition of catalysts, etc., to reduce the amount of metal, Conducive to industrial scale-up and reduce the effect of concentration difference

Active Publication Date: 2019-01-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that when Group VIII noble metals Ru, Rh, Pd, etc. are loaded on a suitable carrier, they all have high reactivity and anti-carbon performance, but the disadvantage of noble metals is that they are expensive; the non-noble metals of Group VIII Among them, the nickel catalyst has high reactivity, and Ni / Al is generally used 2 o 3 Catalyst, the reaction conditions are 1.5~3MPa, 850~900℃, the generated H 2 / CO ratio is about 3
[0004] Although the existing catalysts can obtain better hydrogen production reaction performance by steam reforming of methane, there are still problems such as high cost and easy carbon deposition of the catalyst.

Method used

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  • A kind of preparation method of hydrogen production catalyst by steam reforming of methane
  • A kind of preparation method of hydrogen production catalyst by steam reforming of methane

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Weigh 2.97g of nickel nitrate and dissolve it in 14mL of deionized water to obtain solution A; use equal volume impregnation method to load on 15.2g of alumina carrier (pore volume is 0.73mL / g, specific surface area is 253m 2 / g, strip shape, equivalent diameter 1.5mm), impregnated at room temperature for 2h, aged for 4h, dried at 80°C for 12h, and calcined at 700°C for 4h to prepare catalyst precursor B. The supported Ni was 3% by weight of the final catalyst %; Catalyst precursor B is activated in a mixed atmosphere containing hydrogen, the volume content of hydrogen in the mixed gas is 80%, the reduction condition is 450°C, 0.2MPa (absolute pressure), and the reduction time is 4h; 6.41g magnesium nitrate is dissolved in 16mL In deionized water, solution C was obtained, and the mass fraction of 4 times its mass was mixed uniformly with 40% furfural aqueous solution, and then joined in the autoclave together with the catalyst precursor B after reduction and activation; 1...

Embodiment 2

[0028] Weigh 2.97g of nickel nitrate and dissolve it in 14mL of deionized water to obtain solution A; use equal volume impregnation method to load on 15.2g of silica carrier (pore volume is 0.97mL / g, specific surface area is 372m 2 / g, spherical shape, equivalent diameter 0.5mm), impregnated at room temperature for 2h, aged for 4h, dried at 80°C for 12h, and calcined at 700°C for 4h to prepare catalyst precursor B. The supported Ni was 3% of the final catalyst based on the weight of the element ; Catalyst precursor B was activated in a mixed atmosphere containing hydrogen, the volume content of hydrogen in the mixed gas was 80%, the reduction conditions were 450°C, 0.2MPa (absolute pressure), and the reduction time was 4h; 6.41g of magnesium nitrate was dissolved in 16mL to In deionized water, obtain solution C, and its 4 times mass fraction is the furfural aqueous solution mixing uniformly of 40%, then joins in the autoclave together with the catalyst precursor B after reducti...

Embodiment 3

[0030] Weigh 2.97g of nickel nitrate and dissolve it in 14mL of deionized water to obtain solution A; use equal volume impregnation method to load on 15.2g of SBA-15 carrier (pore volume is 1.23mL / g, specific surface area is 701m 2 / g, strip shape, equivalent diameter 1.5mm), impregnated at room temperature for 2h, aged for 4h, dried at 80°C for 12h, and calcined at 700°C for 4h to prepare catalyst precursor B. The supported Ni was 3% by weight of the final catalyst %; Catalyst precursor B is activated in a mixed atmosphere containing hydrogen, the volume content of hydrogen in the mixed gas is 80%, the reduction condition is 450°C, 0.2MPa (absolute pressure), and the reduction time is 4h; 6.41g magnesium nitrate is dissolved in 16mL In deionized water, solution C was obtained, and the mass fraction of 4 times its mass was mixed uniformly with 40% furfural aqueous solution, and then joined in the autoclave together with the catalyst precursor B after reduction and activation; 1...

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Abstract

The present invention relates to a preparation method of a catalyst for hydrogen preparation through reforming of methane and water vapor. The catalyst comprises an active component, an auxiliary agent, and a carrier. The preparation method comprises: preparing a catalyst precursor B, and reducing the catalyst precursor B; dissolving an auxiliary agent precursor in water, and uniformly mixing with a furfural aqueous solution; adding the obtained mixture and the catalyst precursor B to a high pressure reaction kettle, adding a solution D, and carrying out a reaction; and treating and separating the obtained solid-liquid mixture, filtering the obtained solid sample, drying, and calcining to obtain the catalyst. According to the present invention, the catalyst has characteristics of high reaction activity, metal consumption reducing, and product selectivity improving.

Description

technical field [0001] The invention relates to a preparation method of a hydrogen production catalyst by steam reforming of methane, in particular to a preparation method of a supported nickel-based catalyst for hydrogen production by steam reforming of methane. Background technique [0002] Methane is a hydrocarbon molecule with the highest hydrogen-to-carbon ratio in nature. It has abundant sources and can be used as an excellent raw material for hydrogen production. At present, hydrogen production technologies using methane as raw material mainly include hydrogen production by steam reforming of methane, hydrogen production by partial oxidation of methane, and hydrogen production by autothermal reforming. These technologies are generally the first to obtain synthesis gas (H 2 and CO), and then get hydrogen through shift reaction (WGS) and pressure swing adsorption (PSA). Among them, steam reforming of methane to produce hydrogen can obtain the ratio of hydrogen to carb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/18B01J29/035B01J23/78B01J23/755
CPCB01J23/755B01J23/78B01J29/0356B01J37/18B01J2229/18
Inventor 孙晓丹张舒冬刘继华
Owner CHINA PETROLEUM & CHEM CORP
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