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Solid solution catalyst for acetic acid self-heating hydrogen production by reforming and preparation method

An autothermal reforming and catalyst technology, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, etc., can solve problems such as catalyst deactivation, and achieve higher ratio Surface area, enhanced activity and stability, inhibition of formation and desorption

Active Publication Date: 2017-02-15
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a structurally stable, sintering-resistant , Anti-coking, anti-oxidation, new catalyst with stable activity

Method used

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  • Solid solution catalyst for acetic acid self-heating hydrogen production by reforming and preparation method

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Experimental program
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Effect test

Embodiment 1

[0028] Weigh 1.0000g of P123, add it to 20ml of absolute ethanol, cover with plastic wrap, and stir magnetically at room temperature for 1h to obtain solution #1. Weigh 0.4362g of Ni(NO 3 ) 2 ·6H 2 O, 2.0045g of ZrO(NO 3 ) 2 2H 2 O and 0.3830g of Y (NO 3 ) 3 ·6H 2 O, join solution #1, continue to stir at room temperature for 5h, follow-up steps are the same as reference example 1, obtain the figure 1 Catalyst CUT-NZY10 with the solid solution structure shown. The weight percent composition of the catalyst is as follows: 9.7% of nickel oxide, 80.5% of zirconia, and 9.8% of yttrium oxide.

[0029] The catalyst CUT-NZY10 was investigated by the autothermal reforming activity of acetic acid. The reaction conditions were normal pressure, space velocity 30000mL / (g-catalyst.h), reaction temperature 700°C, raw material gas acetic acid / water / oxygen = 1 / 4.0 / 0.28 , the acetic acid conversion rate of the catalyst was stable at 100%, and the hydrogen production rate was initially...

Embodiment 2

[0031] Weigh 1.0000g of P123, add it to 20ml of absolute ethanol, cover with plastic wrap, and stir magnetically at room temperature for 1h to obtain solution #1. Weigh 0.4362g of Ni(NO 3 ) 2 ·6H 2 O, 1.7373g of ZrO(NO 3 ) 2 2H 2 O and 0.7661g of Y (NO 3 ) 3 ·6H 2 O, join solution #1, continue to stir at room temperature for 5h, follow-up steps are the same as reference example 1, obtain the figure 1 The catalyst CUT-NZY20 with the solid solution structure shown. The weight percent composition of the catalyst is as follows: 9.8% of nickel oxide, 70.4% of zirconium oxide and 19.8% of yttrium oxide.

[0032] The catalyst CUT-NZY20 was investigated by the autothermal reforming activity of acetic acid. The space velocity was 30000mL / (gcatalyst·h), the reaction temperature was 700℃, and the feed ratio was AC / H 2 O / O 2 / N 2 Under the condition of =1 / 4 / 0.28 / 4.2, the acetic acid conversion rate of this catalyst is 100%, and the productive rate of hydrogen is 3.05mol-H 2 / ...

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Abstract

The invention relates to a solid solution catalyst for acetic acid self-heating hydrogen production by reforming. Aiming at the problem that in an acetic acid self-heating reforming reaction of an existing catalyst, by means of oxidizing, sintering, carbon depositing and other factors of the active components of the catalyst, the catalyst is inactivated, the novel catalyst is stable in structure, resistant to sintering, resistant to carbon depositing and oxidization and stable in activity, and the composition by weight of the catalyst is (NiO)a(YO1.5)b(ZrO2)c, wherein a ranges from 0.07 to 0.20, b ranges from 0.02 to 0.35, and c ranges from 0.58 to 0.91. According to the catalyst, zirconium oxide is adopted as a carrier, an aid yttrium oxide is introduced, a polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer is adopted as a template, a mesoporous structure is formed through evaporation self-assembly, and the nickel-based catalyst with the stable ZrxY1-xOy solid solution as the main structure is obtained. The hydrogen productivity, stability and carbon depositing resisting capacity of the acetic acid self-heating reforming process are effectively improved.

Description

technical field [0001] The invention relates to a nickel-based solid solution catalyst for producing hydrogen by autothermal reforming of acetic acid and a preparation method thereof, belonging to the field of hydrogen production by autothermal reforming of acetic acid. Background technique [0002] With the rapid development of human society, the demand for energy is also increasing. Finding alternative resources to traditional fossil fuels has become an urgent goal in today's world. Hydrogen has the characteristics of high calorific value, and its combustion product is water, which has no pollution to the environment and can be used as a clean alternative energy source. The traditional sources of hydrogen are generally fossil resources such as coal and natural gas, and biomass is renewable and relatively cheap, so hydrogen production from biomass has become one of the biomass utilization technologies that has attracted much attention in the world today. However, due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C01B3/32
CPCB01J23/002B01J23/83B01J2523/00C01B3/326C01B2203/0227C01B2203/0233B01J2523/36B01J2523/48B01J2523/847
Inventor 黄利宏杨季龙钟心燕郑真勇杨浩周庆
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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