Catalyst for hydrogen production by bio-oil steam reforming and preparation method thereof

A steam reforming and catalyst technology, which is applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. Due to the low carbon deposition rate of precious metal catalysts and the limitation of industrial application, the effects of improving the conversion rate of bio-oil, strong anti-coking ability and simple preparation method are achieved.

Inactive Publication Date: 2009-06-03
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] According to the research results of existing technologies, noble metal catalysts have good activity and low carbon deposition rate, but they are expensive and have limited reserves, which cannot meet the requirements of large-scale production of industrial catalysts
However, the existing non-precious metal catalysts such as nickel still have disadvantages such as poor stability, easy carbon deposition, and easy deactivation, which greatly limit their practical industrial applications.

Method used

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  • Catalyst for hydrogen production by bio-oil steam reforming and preparation method thereof
  • Catalyst for hydrogen production by bio-oil steam reforming and preparation method thereof
  • Catalyst for hydrogen production by bio-oil steam reforming and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] The preparation of embodiment 1 5Ni-1CelZr catalyst

[0026] The preparation method is as follows:

[0027] 1) Dissolve cerium nitrate and zirconium nitrate with a Ce:Zr (molar ratio) of 1:1 in deionized water to form a solution 1 with a concentration of 0.5mol / L;

[0028] 2) With 1mol / L ammonia water as the precipitating agent, under continuous stirring, solution 1 was added dropwise at the speed of 10ml / min

[0029] In the precipitating agent, the pH value was controlled to be 9. After the precipitation was complete, it was aged at room temperature for 12 hours, washed with deionized water, dried at 110°C, and calcined at 600°C for 6 hours to obtain a zirconium-cerium composite oxide carrier;

[0030] 3) Dissolve nickel nitrate with a nickel content of 5% by mass of the catalyst in metered deionized water, impregnate the prepared zirconium cerium oxide carrier with equal volume, let stand at room temperature for 12 hours, disperse ultrasonically for 30 minutes, dry a...

Embodiment 2

[0031] Embodiment 2: Preparation of 10K5Ni-1Cel Zr catalyst

[0032] The preparation method is as follows:

[0033] 1) Dissolve cerium nitrate and zirconium nitrate with a Ce:Zr (molar ratio) of 1:1 in deionized water, and prepare a solution 1 with a concentration of 0.5 mol / l;

[0034] 2) With 1mol / l ammonia water as the precipitant, under continuous stirring, add solution 1 dropwise to the above precipitant at a rate of 10ml / min, control the pH value to 9, after the precipitation is complete, age at room temperature for 12h, use Washing with deionized water, drying at 110°C, and calcining at 600°C for 6 hours to obtain a zirconium-cerium composite oxide carrier;

[0035] 3) Dissolve nickel nitrate with a nickel content of 5% of the catalyst mass and 10% potassium nitrate in metered deionized water, impregnate the prepared zirconium cerium oxide carrier with equal volume, let stand at room temperature for 12 hours, ultrasonically disperse for 30 minutes, and heat at 110°C D...

Embodiment 3

[0036] Embodiment 3: Preparation of 3Ag5Ni-1CelZr catalyst

[0037] The preparation method is as follows:

[0038] 1) Dissolve cerium nitrate and zirconium nitrate with a Ce:Zr (molar ratio) of 1:1 in deionized water, and prepare a solution 1 with a concentration of 0.5 mol / l;

[0039] 2) With 1mol / l ammonia water as the precipitant, under continuous stirring, add solution 1 dropwise to the above precipitant at a rate of 10ml / min, control the pH value to 9, after the precipitation is complete, age at room temperature for 12h, use Washing with deionized water, drying at 110°C, and calcining at 600°C for 6 hours to obtain a zirconium-cerium composite oxide carrier;

[0040] 3) Dissolve nickel nitrate with a nickel content of 5% by mass of the catalyst and 3% silver nitrate in metered deionized water, impregnate the obtained zirconium cerium oxide carrier with equal volume, let stand at room temperature for 12 hours, ultrasonically disperse for 30 minutes, and heat at 110°C Dry...

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Abstract

The invention discloses a catalyst for hydrogen production by bio-oil steam reforming and a preparation method thereof. The catalyst consists of 5-25wt% of active component nickel, 0-10wt% of an alkali metal promoter, 0-10wt% of a noble metal promoter, and 55-95wt% of a cerium-zirconium compound oxide carrier. The preparation method comprises the following steps: 1) preparing the cerium-zirconium compound oxide carrier; and 2) mixing aqueous solution of soluble nickel salt with aqueous solutions of the catalytic promoters according to the proportion of the catalyst components, stirring evenly, dipping the cerium-zirconium compound oxide carrier in the mixed solution, stirring, ultrasonically dispersing, dipping, drying, roasting, and reducing at the temperature of 400-600 DEG C in hydrogen atmosphere to obtain catalyst powder. The catalyst is applicable to normal pressure, and has the advantages of simple preparation method, high reaction activity, strong anti-carbon deposition ability, good stability, low cost and the like, thus greatly enhancing the transformation ratio of the bio-oil, the hydrogen production rate and prolonging the service life of the catalyst.

Description

technical field [0001] The invention relates to bio-oil hydrogen production technology, in particular to a bio-oil steam reforming hydrogen production catalyst and a preparation method thereof. Background technique [0002] As an efficient and clean secondary energy source, hydrogen has attracted more and more attention, and has been widely used in many industries. The use of renewable energy such as biomass to produce hydrogen has special significance for alleviating the increasingly tense energy supply and demand and environmental pollution problems, and is one of the most attractive and promising approaches. [0003] At present, the technologies for hydrogen production from biomass mainly include biomass gasification hydrogen production, biomass pyrolysis hydrogen production, biomass supercritical conversion hydrogen production and bio-oil reforming hydrogen production. Among them, the outstanding advantage of hydrogen production by bio-oil reforming is that bio-oil, as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/89C01B3/32
Inventor 胡蓉蓉阎常峰罗伟民
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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