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Bio-oil steam reforming monolithic catalyst for hydrogen production and preparation method thereof

A monolithic catalyst and steam reforming technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. Carbon deposition and other issues

Active Publication Date: 2021-05-18
HEFEI DEBO BIOENERGY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The carrier is an indispensable and important part of the reforming catalyst. A good carrier can provide a large specific surface area for the reforming catalyst, increase the dispersion of active components, enhance thermal stability, etc., but at present, most of them are powder or granular carriers Mainly, this type of carrier has a large gas flow resistance during the reaction process, and the heat accumulation of the gas flow is easy to cause carbon deposition on the active component on the carrier, hindering the contact between the reactant and the active component, and at the same time blocking the gap and causing the bed pressure to be too high. Large, the catalyst is pulverized, which ultimately affects the stability of the catalyst

Method used

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  • Bio-oil steam reforming monolithic catalyst for hydrogen production and preparation method thereof
  • Bio-oil steam reforming monolithic catalyst for hydrogen production and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a monolithic catalyst for hydrogen production by steam reforming of bio-oil, specifically comprising the following steps:

[0026] (1) Dissolve 30mmol citric acid, 36mmol nickel nitrate, 6mmol n-butyl titanate and 30mmol tetraethyl orthosilicate in 60ml ethanol solution, stir to obtain the precursor mixed solution, and the stirring time is 120min; the above-mentioned citric acid, The amount of nickel nitrate, n-butyl titanate, ethyl orthosilicate and ethanol, according to citric acid: nickel nitrate: n-butyl titanate: ethyl orthosilicate: ethanol is 30mmol: 36mmol: 6mmol: 30mmol: 60ml Proportional calculations.

[0027] (2) The precursor mixture solution obtained in step (1) was completely poured into the micron-scale pores of the monolithic log by vacuum filtration, and slowly evaporated and induced at 60°C for 10 hours until it was air-dried;

[0028] (3) Perform high-temperature pyrolysis of the monolithic log containing the precursor in the c...

Embodiment 2

[0033] A method for preparing a monolithic catalyst for hydrogen production by steam reforming of bio-oil, specifically comprising the following steps:

[0034] (1) Dissolve 25mmol of citric acid, 24mmol of nickel nitrate, 6mmol of n-butyl titanate and 20mmol of ethyl orthosilicate in 40ml of ethanol solution, and stir to obtain a precursor mixed solution for 90min; the above-mentioned citric acid, The amount of nickel nitrate, n-butyl titanate, ethyl orthosilicate and ethanol, according to citric acid: nickel nitrate: n-butyl titanate: ethyl orthosilicate: ethanol is 25mmol: 24mmol: 6mmol: 20mmol: 40ml Proportional calculations.

[0035] (2) Completely pour the precursor mixture obtained in step (1) into the micron-scale pores of the monolithic log by vacuum filtration, and slowly evaporate and induce at 40°C for 24 hours until it is air-dried;

[0036] (3) Perform high-temperature pyrolysis of the monolithic log containing the precursor in the channel obtained in step (2) u...

Embodiment 3

[0041] A method for preparing a monolithic catalyst for hydrogen production by steam reforming of bio-oil, specifically comprising the following steps:

[0042] (1) Dissolve 20mmol citric acid, 15mmol nickel nitrate, 5mmol n-butyl titanate and 20mmol tetraethyl orthosilicate in 35ml ethanol solution, stir to obtain the precursor mixed solution, and the stirring time is 70min; the above-mentioned citric acid, The amount of nickel nitrate, n-butyl titanate, orthosilicate and ethanol is 20mmol: 15mmol: 5mmol: 20mmol: 35ml of citric acid: nickel nitrate: n-butyl titanate: orthosilicate: ethanol Proportional calculations.

[0043] (2) Completely pour the precursor mixture obtained in step (1) into the micron-scale pores of the monolithic log by vacuum filtration, and slowly evaporate and induce at 30°C for 36 hours until it is air-dried;

[0044] (3) Perform high-temperature pyrolysis of the monolithic log containing the precursor in the channel obtained in step (2) under a nitrog...

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Abstract

The invention relates to a preparation method of a catalyst, in particular to a bio-oil steam reforming hydrogen production integral catalyst and a preparation method thereof, belonging to the technical field of catalysts and preparation thereof. A bio-oil steam reforming monolithic catalyst for hydrogen production, the monolithic catalyst is composed of an active component and a carrier, and the active component is NiO X ‑NiTiO 3 Nanoparticles, where the active component NiO X ‑NiTiO 3 In situ growth on mesoporous carbon materials to form composite catalyst NiO X ‑NiTiO 3 / C, the carrier is monolithic charcoal WC. The monolithic catalyst not only has developed pores and a high specific surface area, but also exhibits high activity and stability in hydrogen production by steam reforming of bio-oil, and the preparation method is relatively simple and easy to scale up.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a bio-oil steam reforming hydrogen production integral catalyst and a preparation method thereof, belonging to the technical field of catalysts and preparation thereof. Background technique [0002] Hydrogen energy is not only a clean energy with high combustion calorific value, but also an important chemical raw material. The production of hydrogen from fossil fuels (coal, oil and natural gas) is currently the main method of hydrogen production, but with the gradual depletion of fossil fuels, the cost of hydrogen production continues to increase, and a large amount of greenhouse gases are emitted during the process, which poses environmental pollution problems. increasingly serious. [0003] Due to its carbon neutrality, biomass is considered to be an effective alternative raw material for hydrogen production due to its renewability, diversity, abundance and environmental f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J27/22B01J37/06B01J37/08B01J35/10B82Y30/00B82Y40/00C01B3/32
CPCB01J23/755B01J37/06B01J37/082B01J27/22B82Y30/00B82Y40/00C01B3/32C01B2203/0233C01B2203/1058C01B2203/1082B01J35/617B01J35/615B01J35/635B01J35/633
Inventor 王燕刚李溪
Owner HEFEI DEBO BIOENERGY SCI & TECH
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