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Biomass hydrogen production composite difunctional particle and preparation method and application thereof

A dual-function, biomass technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, hydrogen, etc., can solve the problem of high cost, achieve large adsorption capacity, long adsorption time, and production process simple effect

Inactive Publication Date: 2014-05-07
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Preliminary experiments have proved that noble metal catalysts have better catalytic effects, but their cost is high and they have not been widely used

Method used

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  • Biomass hydrogen production composite difunctional particle and preparation method and application thereof
  • Biomass hydrogen production composite difunctional particle and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 9.42g of calcium acetate, 3.46g of nickel nitrate, 0.45g of ferric nitrate and 5.62g of citric acid, add distilled water and stir to dissolve completely, keep stirring and drying the solution at 100°C, and then calcinate at 900°C for 3 hours and then crush to obtain A composite bifunctional particle for hydrogen production from biomass with 24 to 50 meshes. In the hydrogen production reaction of adsorption-enhanced glycerol steam reforming, 1.24g of this bifunctional particle was used as a catalyst, and the space velocity of glycerol was 22h -1 , the water-to-carbon ratio is 3:1, the reaction pressure is 0.1MPa, the pre-reduction temperature is 700°C, and the reaction temperature is 600°C, such as figure 1 .

[0021] Such as figure 1 As shown, before 18 minutes, the hydrogen concentration reached 98%. After 18 minutes, the adsorption of the adsorbent gradually reached saturation, the relative content of hydrogen gradually decreased, and finally stabilized at abo...

Embodiment 2

[0025] Weigh 9.42g of calcium acetate, 3.46g of nickel nitrate, 0.45g of ferric nitrate and 5.62g of citric acid, add distilled water and stir to dissolve them completely, keep stirring the solution at 80°C and dry it, then calcinate at 700°C for 2 hours and then crush it to obtain A composite bifunctional particle for hydrogen production from biomass with 24 to 50 meshes. In the adsorption-enhanced acetic acid steam reforming hydrogen production reaction, 1.24g of this bifunctional particle was used as a catalyst, and the space velocity of acetic acid was 11h -1 , the water-to-carbon ratio is 3:1, the reaction pressure is 0.1MPa, the pre-reduction temperature is 600°C, and the reaction temperature is 500°C. According to experiments, the composite bifunctional particles prepared under this condition act on the hydrogen production reaction of acetic acid steam reforming, and the hydrogen concentration obtained is slightly lower than that in Example 1.

Embodiment 3

[0027] Weigh 9.42g of calcium acetate, 3.46g of nickel nitrate, 0.45g of ferric nitrate and 5.62g of citric acid, add distilled water and stir to dissolve them completely, keep stirring the solution at 120°C and dry it, then calcinate at 1100°C for 5 hours and then break it to obtain A composite bifunctional particle for hydrogen production from biomass with 24 to 50 meshes. In the adsorption-enhanced acetic acid steam reforming hydrogen production reaction, 1.24g of this bifunctional particle is used as a catalyst, and the space velocity of acetic acid is 55h -1 , the water-to-carbon ratio is 3:1, the reaction pressure is 0.3MPa, the pre-reduction temperature is 800°C, and the reaction temperature is 600°C. According to experiments, the composite bifunctional particles prepared under this condition acted on the hydrogen production reaction by steam reforming of acetic acid, and the resulting hydrogen concentration was slightly higher than that in Example 1.

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Abstract

The invention discloses a biomass hydrogen production composite difunctional particle and a preparation method and application thereof. The composite difunctional particle comprises CaO, FeO and NiO, wherein the mass of NiO accounts for 10-20 percent of mass of CaO, and the mass of FeO in accounts for 1-10 percent of the mass of CaO. The cyclic adsorption capacity of the biomass hydrogen production composite difunctional particle prepared by the preparation method disclosed by the invention is obviously higher than that of a non-modified calcium-based difunctonal particle and the prepared biomass hydrogen production composite difunctional particle has high adsorption capacity; hydrogen obtained by application of the biomass hydrogen production composite difunctional particle in reforming reaction between adsorption enhanced type glycerinum and acetic acid vapor is relatively high; compared with the conventional non-modified difunctional particle, the biomass hydrogen production composite difunctional particle disclosed by the invention has long adsorption time; the manufacturing time is simple; the requirement on equipment is low; the biomass hydrogen production composite difunctional particle can be applied to large-scale production.

Description

technical field [0001] The invention relates to a steam reforming composite bifunctional particle of a biomass derivative, a preparation method and an application thereof, and belongs to the field of energy technology. Background technique [0002] Fuel cells have the advantages of low pollution, high calorific value, and various utilization forms. For vehicle-mounted hydrogen fuel cells, due to the constraints of the hydrogen storage system, it has not been practically applied. Based on this, a solution to supply hydrogen for on-board fuel cells using direct reforming of liquid fuels is proposed. Biomass derivatives such as glycerol and acetic acid have the characteristics of renewable, high specific energy and low carbon chain, which are suitable as fuel for on-board fuel cell vehicles. [0003] Biomass derivatives include acetic acid, glycerol, etc. According to the principle of chemical reaction equilibrium shift, if the CO produced in the reaction can be 2 Real-time ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/78B01J20/06C01B3/32
Inventor 王文举张鹏刑兵
Owner NANJING UNIV OF SCI & TECH
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