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A kind of preparation method for the hydrogen production catalyst of steam reforming of methane

A technology for producing hydrogen from methane steam and reforming, which is applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. High problems, to achieve the effect of being conducive to industrial amplification, reducing metal consumption, and reducing concentration difference

Active Publication Date: 2018-11-06
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 for the hydrogen production catalyst of steam reforming of methane
  • A kind of preparation method for the hydrogen production catalyst of steam reforming of methane

Examples

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Effect test

Embodiment 1

[0023] The spent hydrotreating catalyst (MoCo / Al 2 o 3), the oil on the catalyst surface was removed by petroleum ether extraction, dried at 110°C for 8 h, and the obtained catalyst was calcined at 450°C for 4 h to obtain catalyst precursor A, wherein Mo accounted for 6.1wt% by weight of catalyst precursor A in terms of elements, Co accounts for 1.8wt% of the weight of the catalyst precursor A in terms of elements, and Ni accounts for 2.3wt% of the weight of the catalyst precursor A in terms of elements; 20g of the catalyst precursor A is activated in a hydrogen-containing mixed atmosphere, and 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; dissolve 19.02g of magnesium nitrate in 30mL of deionized water to obtain solution B, and mix it with 4 times the mass of a 40% furfural aqueous solution Mix evenly, and then add it to the autoclave together with the reduced and activated c...

Embodiment 2

[0025] The spent hydrotreating catalyst (MoCo / Al 2 o 3 ), the oil on the catalyst surface was removed by petroleum ether extraction, dried at 110°C for 8 h, and the obtained catalyst was calcined at 450°C for 4 h to obtain catalyst precursor A, wherein Mo accounted for 5.2wt% by weight of catalyst precursor A in terms of elements, Co accounts for 1.2wt% of the weight of the catalyst precursor A in terms of elements, and Ni accounts for 1.5wt% of the weight of the catalyst precursor A in terms of elements; 20g of the catalyst precursor A is activated in a hydrogen-containing mixed atmosphere, and 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; dissolve 10.26g of magnesium nitrate in 25mL of deionized water to obtain solution B, and mix it with 4 times the mass of a 40% furfural aqueous solution Mix evenly, and then add it to the autoclave together with the reduced and activated ...

Embodiment 3

[0027] The spent hydrotreating catalyst (MoCo / Al 2 o 3 ), the oil on the catalyst surface was removed by petroleum ether extraction, dried at 110°C for 8 h, and the obtained catalyst was calcined at 450°C for 4 h to obtain catalyst precursor A, wherein Mo accounted for 6.1wt% by weight of catalyst precursor A in terms of elements, Co accounts for 1.8wt% of the weight of the catalyst precursor A in terms of elements, and Ni accounts for 2.3wt% of the weight of the catalyst precursor A in terms of elements; 20g of the catalyst precursor A is activated in a hydrogen-containing mixed atmosphere, and 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; 27.99g of magnesium nitrate is dissolved in 40mL of deionized water to obtain solution B, and its mass fraction is 4 times the mass fraction of 40% furfural aqueous solution Mix evenly, and then add it to the autoclave together with the re...

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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, wherein the catalyst comprises an active component, an auxiliary agent, and a carrier. The preparation method comprises: preparing a catalyst precursor A, and reducing the catalyst precursor A; dissolving an auxiliary agent precursor in water, and uniformly mixing with a furfural aqueous solution; adding the obtained mixture and the catalyst precursor A to a high pressure reaction kettle, adding a solution C, 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 waste residue oil hydrotreating catalyst is completely utilized so as to save the cost; and the prepared catalyst has characteristics of high reaction activity, metal consumption reducing, and product selectivity improving.

Description

technical field [0001] The invention relates to a method for preparing a catalyst for steam reforming of methane to produce hydrogen, in particular to a method for preparing a supported nickel-based catalyst for steam reforming of methane to produce hydrogen. 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 carbon (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/887B01J23/883
CPCB01J23/883B01J23/8871B01J23/8872B01J37/18
Inventor 张舒冬孙晓丹刘继华
Owner CHINA PETROLEUM & CHEM CORP
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