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Mesoporous silica-supported tungsten-promoted nickel-based catalyst for autothermal reforming of acetic acid for hydrogen production

A technology of mesoporous silica and nickel-based catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, hydrogen, etc., can solve the problems of catalyst deactivation, poor thermal stability of catalyst structures, etc. , to achieve the effect of promoting acetic acid dehydrogenation, inhibiting acetic acid dehydration and ketoneation reactions, and improving activity and stability

Active Publication Date: 2020-09-15
成都富鼎鑫瑞科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The problem to be solved by the present invention is: for existing catalysts in the process of acetic acid autothermal reforming hydrogen production, the thermal stability of the catalyst structure is poor, and the problems of catalyst deactivation caused by easy oxidation, sintering and carbon deposition, etc., the present invention provides A new catalyst with stable structure, resistance to oxidation, sintering and carbon deposition

Method used

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  • Mesoporous silica-supported tungsten-promoted nickel-based catalyst for autothermal reforming of acetic acid for hydrogen production
  • Mesoporous silica-supported tungsten-promoted nickel-based catalyst for autothermal reforming of acetic acid for hydrogen production

Examples

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Effect test

example 1

[0025] Take by weighing 10.930g of cetyltrimethylammonium bromide (CTAB), be dissolved in the mixed solution of 200g ethanol, 200g deionized water and 18.700g strong ammonia water, obtain transparent solution, and under vigorous stirring condition, 20.833 g of tetraethoxysilane (TEOS) was slowly dropped into the mixed solution, maintained vigorous stirring for 2 hours, and then filtered under reduced pressure to obtain a white precipitate, washed with deionized water until neutral, and dried at 110°C 12 hours, baked in air at 550°C for 6 hours to obtain SiO 2 Carrier; 2.350g Ni(NO 3 ) 2 ·6H 2 O was dissolved in deionized water and SiO was added 2 Carrier, impregnated for 0.5 hours, stirred and evaporated to dryness in a water bath at 80°C, dried at 110°C for 12 hours, and roasted at 550°C in air for 8 hours to obtain a CDUT-NS-1 catalyst. The weight percentage of the catalyst is composed of: Nickel (NiO) is 10.0%, silicon dioxide (SiO 2 ) is 90.0%.

[0026] The reactivit...

example 2

[0029] Take by weighing 10.930g of cetyltrimethylammonium bromide (CTAB), be dissolved in the mixed solution of 200g ethanol, 200g deionized water and 18.700g strong ammonia water, obtain transparent solution, and under vigorous stirring condition, 20.833 g of tetraethoxysilane (TEOS) was slowly dropped into the mixed solution, maintained vigorous stirring for 2 hours, and then filtered under reduced pressure to obtain a white precipitate, washed with deionized water until neutral, and dried at 110°C 12 hours, baked in air at 550°C for 6 hours to obtain SiO 2 Carrier; 7.930g of (NH 4 ) 10 h 2 (W 2 o 7 ) 6 Dissolve in deionized water, add SiO 2 Carrier, impregnated for 0.5 hours, stirred and evaporated to dryness in a water bath at 80°C, dried at 110°C for 12 hours, and roasted at 550°C in air for 8 hours to obtain a CDUT-WS-1 catalyst. The weight percentage of the catalyst is composed of: Tungsten (WO 3 ) is 10.0%, silicon dioxide (SiO 2 ) is 90.0%.

[0030] Catalyst...

Embodiment 1

[0032] Take by weighing 10.930g of cetyltrimethylammonium bromide (CTAB), be dissolved in the mixed solution of 200g ethanol, 200g deionized water and 18.700g strong ammonia water, obtain transparent solution, and under vigorous stirring condition, 20.833 g of tetraethoxysilane (TEOS) was slowly dropped into the mixed solution, maintained vigorous stirring for 2 hours, and then filtered under reduced pressure to obtain a white precipitate, washed with deionized water until neutral, and dried at 110°C 12 hours, baked in air at 550°C for 6 hours to obtain SiO 2 Carrier; 1.601g of (NH 4 ) 10 h 2 (W 2 o 7 ) 6 and 2.420g of Ni(NO 3 ) 2 ·6H 2 O was dissolved in deionized water and SiO was added 2 The carrier was soaked for 0.5 hours, stirred and evaporated to dryness in a water bath at 80°C, dried at 110°C for 12 hours, and roasted at 550°C in air for 8 hours to obtain the attached figure 1 The structure shown, that is, containing monoclinic NiWO 4 supported on mesoporous...

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Abstract

The invention relates to a mesoporous silica supported tungsten-promoted nickel-based catalyst for hydrogen production by autothermal reforming of acetic acid. Aiming at the inactivation problem of anexisting catalyst in the acetic acid autothermal reforming process, the invention provides a novel catalyst with high activity, carbon deposition resistance and oxidation resistance. The molar composition of the catalyst is (NiO)a(WO3)b(SiO2)c, wherein a ranges from 0.0764 to 0.1367, b ranges from 0 to 0.0353, b is not 0, and c ranges from 0.8281 to 0.8889. According to the invention, Ni and W species are impregnated on a SiO2 carrier by adopting an impregnation method, and the stable mesoporous composite oxide catalyst containing NiWO4 and SiO2 is formed by roasting. The catalyst provided bythe invention effectively promotes acetic acid conversion, inhibits the generation of acetone and other byproducts, and improves the yield and reaction stability of hydrogen.

Description

technical field [0001] The present invention relates to mesoporous SiO 2 The invention relates to the application of the supported W-promoting Ni-based catalyst in the hydrogen production from the autothermal reforming of acetic acid, and belongs to the field of producing hydrogen from the autothermal reforming of the acetic acid. Background technique [0002] Hydrogen is a kind of clean energy. In traditional industries, hydrogen is generally obtained from fossil fuels such as naphtha, natural gas, and coal through reforming reactions. These processes will cause a large amount of greenhouse gas emissions. Therefore, biomass, as a renewable resource, is a better raw material for hydrogen production. [0003] After pyrolysis of biomass, biomass oil with high energy density will be obtained. The composition of biomass oil produced by pyrolysis of biomass with different components is very different. Usually, the water phase component of biomass oil contains about 33% acetic ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/888C01B3/32
CPCB01J23/755B01J23/888C01B3/326C01B2203/0244C01B2203/1058C01B2203/1082
Inventor 黄利宏陈慧安爽宋玉鑫陈柏全张羽
Owner 成都富鼎鑫瑞科技股份有限公司
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