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Preparation method of nickel-based heterogeneous catalyst and application of nickel-based heterogeneous catalyst to hydrodeoxygenation reaction of catalytic aldehyde compound

A compound and catalyst technology, which is applied to the preparation of nickel-based heterogeneous catalysts and its application in the field of catalyzing the hydrodeoxygenation of aldehyde compounds, can solve the problems of expensive precious metal catalysts, etc. active effect

Inactive Publication Date: 2019-10-22
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing precious metal catalysts are expensive, and to provide a preparation method of a nickel-based heterogeneous catalyst and its application in highly efficient catalytic hydrodeoxygenation of biomass aldehyde compounds

Method used

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  • Preparation method of nickel-based heterogeneous catalyst and application of nickel-based heterogeneous catalyst to hydrodeoxygenation reaction of catalytic aldehyde compound
  • Preparation method of nickel-based heterogeneous catalyst and application of nickel-based heterogeneous catalyst to hydrodeoxygenation reaction of catalytic aldehyde compound

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Effect test

Embodiment 1

[0023] 1. Preparation of nickel-based heterogeneous catalyst porous material Ni-MFC-X

[0024] 1) Add 0.0582 nickel nitrate hexahydrate, 1.108g of organic ligand and 15ml of water into the hydrothermal synthesis kettle by hydrothermal synthesis method, and then program the temperature up to the target temperature of 180°C with a heating rate of 2°C / min. Burn for three days and cool down for three days to room temperature to synthesize a metal precursor Ni-MFC green needle-like crystal;

[0025] 2) These metal precursor Ni-MFC crystals were calcined in a tube furnace under nitrogen for 4h at a calcination temperature of 500°C to obtain a nickel-based catalyst Ni-MFC-500 with good thermal stability and cyclicity.

[0026] 3) These metal precursor Ni-MFC crystals were calcined in a tube furnace under nitrogen for 4h at a calcination temperature of 600°C to obtain a nickel-based catalyst Ni-MFC-600 with good thermal stability and recyclability.

[0027] 3) These metal precursor N...

Embodiment 2

[0036] Application of new porous material Ni-MFC-700 in hydrogenation reduction of 3,4,5-trimethoxybenzaldehyde:

[0037] With 3,4,5-trimethoxybenzaldehyde as substrate, 5mL methanol as solvent, add 0.01g of catalyst and 0.1g of 3,4,5-trimethoxybenzaldehyde, fill the reactor with 2MPa hydrogen, and Under the conditions of temperature of 175°C and stirring speed of 350 rpm, the reaction was carried out for 10 hours, and the reaction results were analyzed by gas chromatography; the conversion rate of 3,4,5-trimethoxybenzaldehyde was >85.9%, 3,4,5 - Yield of trimethoxytoluene 29.7%

[0038] With 3,4,5-trimethoxybenzaldehyde as substrate, 15mL of methanol as solvent, add 0.025g of catalyst and 0.1g of 3,4,5-trimethoxybenzaldehyde, fill the reactor with 2MPa hydrogen, and Under the condition of temperature of 200°C and stirring speed of 550 rpm, the reaction was carried out for 10 hours, and the reaction result was analyzed by gas chromatography; the conversion rate of 3,4,5-trime...

Embodiment 3

[0041] Application of the new porous material Ni-MFC-700 in the hydrogenation reduction of 3-hydroxy-4-methoxybenzaldehyde:

[0042] With 3-hydroxyl-4-methoxybenzaldehyde as substrate, 5mL methanol as solvent, add 0.01g of catalyst 0.1g of 3-hydroxyl-4-methoxybenzaldehyde, fill the reaction kettle with 2MPa hydrogen, and Under the conditions of temperature of 175°C and stirring speed of 350 rpm, the reaction was carried out for 10 hours, and the reaction results were analyzed by gas chromatography; the conversion rate of 3-hydroxy-4-methoxybenzaldehyde was >90.3%, and the conversion rate of 3-hydroxy-4 - Yield of methoxytoluene 59.0%.

[0043] With 3-hydroxyl-4-methoxybenzaldehyde as substrate, 15mL methanol as solvent, add 0.025g of catalyst 0.1g of 3-hydroxyl-4-methoxybenzaldehyde, charge 2MPa hydrogen in the reactor, Under the conditions of temperature of 200°C and stirring speed of 550 rpm, the reaction was carried out for 10 hours, and the reaction results were analyzed ...

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Abstract

The invention discloses a preparation method of a nickel-based heterogeneous catalyst and application of the nickel-based heterogeneous catalyst to the hydrodeoxygenation reaction of a catalytic aldehyde compound. The application of the nickel-based heterogeneous catalyst is characterized in that an organo-metallic frame material is prepared by a hydrothermal synthesis method as a precursor; a metal nickel solid catalyst is obtained after high-temperature roasting and can be used for catalyzing the reduction reaction of the organic aldehyde compound, especially the hydrodeoxygenation reactionprocess of a biomass model. The nickel-based heterogeneous catalyst prepared with the preparation method disclosed by the invention is suitable for the reduction of aromatic aldehydes and furanaldehydes with a variety of different substituents, a product is used for reducing aldehyde groups in the aromatic aldehydes into methyl groups, and regulating and controlling the distribution of furanoaldehyde reduction products; during reaction, the catalyst itself is not damaged in structure, is good in cycle performance and stability, and avoids the characteristics of low use and low selectivity of anoble metal catalyst, thereby having significant effects and application prospects for synthesizing high value-added chemicals and bio-oils.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation and application, and relates to a catalyst for hydrogenation reduction of biomass aldehydes into high value-added chemicals and biomass oil, which is derived from Ni-MFC crystal material passed through under nitrogen conditions A highly active nickel-based catalyst Ni-MFC-X can be obtained by simple calcination, and this highly active catalyst is used in the reductive deoxygenation process of different aldehydes derived from biomass. Background technique [0002] With the development of society, human's demand for energy is increasing day by day, but the traditional fossil energy can no longer meet the needs of human beings. At the same time, the problem of environmental pollution is becoming more and more serious with the extensive use of fossil energy. Finding new energy sources to replace traditional fossil energy sources has become a hot topic in current research. The new energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C07C37/00C07C41/18C07D307/42C07C43/205C07C39/07C07B31/00
CPCB01J23/755C07C41/18C07C37/003C07D307/42C07B31/00C07C43/23C07C43/2055C07C43/205C07C39/07
Inventor 仝新利郭鹏飞廖圣云白鹏高艺绮
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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