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Preparation method and application of double-functional composite Co modified particle

A dual-function, granular technology, applied in the energy field, can solve problems such as complex production steps, and achieve the effect of high equipment requirements, low equipment requirements, and large adsorption capacity

Inactive Publication Date: 2014-05-14
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Experiments have proved that the catalyst can catalyze the hydrogen production reaction of ethanol steam reforming, but the hydrogen yield is about 30%, and the production steps are relatively complicated

Method used

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  • Preparation method and application of double-functional composite Co modified particle
  • Preparation method and application of double-functional composite Co modified particle
  • Preparation method and application of double-functional composite Co modified particle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 9.42g of calcium acetate, 1.83g of cobalt nitrate hexahydrate, 0.45g of nickel 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 calcined at 900°C for 3h Co-modified composite bifunctional particles of 24-50 meshes were obtained by crushing. In the adsorption-enhanced ethanol steam reforming hydrogen production reaction, 1.24 g of this bifunctional particle was used as a catalyst, and the space velocity of ethanol was 20 h -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 .

[0024] Such as figure 1 As shown in (b), before 20 minutes, the hydrogen concentration reached 97%. After 15 minutes, the adsorption of the adsorbent gradually reached saturation, and the relative content of hydrogen gradually decreased, and finally stabilized at about 73%. It can b...

Embodiment 2

[0026] Weigh 9.42g of calcium acetate, 1.83g of cobalt nitrate hexahydrate, 0.45g of nickel 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 calcined at 900°C for 3h Co-modified composite bifunctional particles of 24-50 meshes were obtained by crushing. In the adsorption-enhanced glycerol steam reforming hydrogen production reaction, 1.24 g of this bifunctional particle was used as a catalyst, and the space velocity of glycerol was 20 h -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 2 .

[0027] Such as figure 2 As shown in (b), before 13 minutes, the hydrogen concentration reached 97%. After 15 minutes, the adsorption of the adsorbent gradually reached saturation, and the relative content of hydrogen gradually decreased, and finally stabilized at about 70%. It c...

Embodiment 3

[0029] Weigh 9.42g of calcium acetate, 1.83g of cobalt nitrate hexahydrate, 0.45g of nickel 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 calcined at 900°C for 3h Co-modified composite bifunctional particles of 24-50 meshes were obtained by crushing. In the adsorption-enhanced acetic acid steam reforming hydrogen production reaction, 1.24 g of this bifunctional particle was used as a catalyst, and the space velocity of acetic acid was 22 h -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 image 3 .

[0030] Such as image 3 As shown in (b), before 13 minutes, the hydrogen concentration reached 98%. After 15 minutes, the adsorption of the adsorbent gradually reached saturation, and the relative content of hydrogen gradually decreased, and finally stabilized at about 68%. ...

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Abstract

The invention discloses a preparation method and an application of a double-functional composite Co modified particle, belonging to the technical field of energy. A calcium-based carrier is added with two non-noble metals Co and Ni, and ions including Ca<2+> and the like are complexed by utilizing a sol-gel method, so that the adsorption efficiency and the catalytic efficiency are remarkably improved. The preparation method and the application disclosed by the invention can be applied to ethanol adsorption reinforced vapor reformation hydrogen production reaction or applied to glycerinum and acetic acid adsorption reinforced vapor reformation hydrogen production reaction and the like.

Description

technical field [0001] The invention relates to a preparation method and application of a Co-modified composite bifunctional particle, which belongs to the field of energy technology, and can act on the adsorption-enhanced reforming hydrogen production of biomass derivatives, and has the functions of catalysis and adsorption, thereby significantly improving the generation concentration of hydrogen. Background technique [0002] Hydrogen fuel cells have attracted people's attention due to their unique advantages such as no 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 yet been applied on a large scale. In response to this problem, the researchers proposed a solution to supply hydrogen to on-board fuel cells using direct reforming of liquid fuels. Biomass derivatives such as ethanol, glycerol, and acetic acid are renewable, high specific energy, and lo...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J23/78B01J20/30C01B3/32
Inventor 王文举张鹏刑兵
Owner NANJING UNIV OF SCI & TECH
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