Phosphorus-doped nickel aluminum oxide and preparation method and application thereof

A nickel-aluminum oxide and phosphorus doping technology, which is applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, metal/metal oxide/metal hydroxide catalysts, etc., can solve phase transition, deactivation, and carbon deposition and other problems, to achieve the effect of cheap and easy-to-obtain raw materials, high stability, and inhibition of metal agglomeration

Active Publication Date: 2022-02-15
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the deficiencies of the prior art, the present invention provides a phosphorus-doped nickel-aluminum oxide and its preparation method and application, which solves the technical problem that traditional phosphide catalysts are prone to carbon deposition or phase transition and deactivation

Method used

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  • Phosphorus-doped nickel aluminum oxide and preparation method and application thereof
  • Phosphorus-doped nickel aluminum oxide and preparation method and application thereof
  • Phosphorus-doped nickel aluminum oxide and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation of phosphorus doped nickel aluminum oxide (NiAl-800-P350):

[0056] a) Add 9mmol Ni(NO 3 ) 2 ·6H 2 O, 3mmol Al(NO 3 ) 3 9H 2 O. Dissolve 27mmol of urea in 90mL of deionized water, stir until clarified, put it into a polytetrafluoroethylene hydrothermal kettle, and place it in an oven at 100°C for 24h;

[0057] b) After the hydrothermal reaction is completed, a hydrotalcite-like precipitate is obtained, and the precipitate is separated by suction filtration, washed with water for 3-5 times, and dried in an oven at 80° C. for 12 hours;

[0058] c) Grind the dried sample until it is fine and uniform, then place it in a muffle furnace for aerobic calcination, the heating rate is 10 ℃ / min, the calcination temperature is 800 ℃, keep it for 1 hour, and then drop to room temperature;

[0059] d) Weigh 0.1g of the obtained oxide, 1.0g of sodium hypophosphite (NaH 2 PO 2 ) in a quartz tube, purged with argon (100mL / min) for 30min, then evacuated the reaction s...

Embodiment 2

[0061] Preparation of phosphorus doped nickel aluminum oxide (NiAl-650-P350):

[0062] a) Add 9mmol Ni(NO 3 ) 2 ·6H 2 O, 3mmol Al(NO 3 ) 3 9H 2 O. Dissolve 27mmol of urea in 90mL of deionized water, stir until clarified, put it into a polytetrafluoroethylene hydrothermal kettle, and place it in an oven at 100°C for 24h;

[0063] b) After the hydrothermal reaction is completed, a hydrotalcite-like precipitate is obtained, and the precipitate is separated by suction filtration, washed with water for 3-5 times, and dried in an oven at 80° C. for 12 hours;

[0064] c) Grind the dried sample until it is fine and uniform, and then place it in a muffle furnace for aerobic roasting at a heating rate of 10 °C / min at a roasting temperature of 650 °C, keep it for 1 hour, and then cool down to room temperature;

[0065] d) Weigh 0.1g of the obtained oxide, 1.0g of sodium hypophosphite (NaH 2 PO 2 ) in a quartz tube, purged with argon (100mL / min) for 30min, then evacuated the react...

Embodiment 3

[0067] Preparation of phosphorus doped nickel aluminum oxide (NiAl-500-P350):

[0068] a) Add 9mmol Ni(NO 3 ) 2 ·6H 2 O, 3mmol Al(NO 3 ) 3 9H 2 O. Dissolve 27mmol of urea in 90mL of deionized water, stir until clarified, put it into a polytetrafluoroethylene hydrothermal kettle, and place it in an oven at 100°C for 24h;

[0069] b) After the hydrothermal reaction is completed, a hydrotalcite-like precipitate is obtained, and the precipitate is separated by suction filtration, washed with water for 3-5 times, and dried in an oven at 80° C. for 12 hours;

[0070] c) Grind the dried sample until it is fine and uniform, then place it in a muffle furnace for aerobic calcination, the heating rate is 10 ℃ / min, the calcination temperature is 500 ℃, keep it for 1 hour, and then cool down to room temperature;

[0071] d) Weigh 0.1g of the obtained oxide, 1.0g of sodium hypophosphite (NaH 2 PO 2 ) in a quartz tube, purged with argon (100mL / min) for 30min, then evacuated the react...

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Abstract

The invention belongs to the technical field of application of novel catalytic materials, and particularly relates to a phosphorus-doped nickel aluminum oxide as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out high-temperature aerobic roasting on a nickel-aluminum-based hydrotalcite-like compound to obtain a nickel-aluminum oxide; mixing the nickel-aluminum oxide with a phosphorus source, and heating the mixture under the protection of inert gas or under a vacuum airtight condition; and adding phosphorus into the nickel-aluminum oxide to finally prepare the phosphorus-doped nickel-aluminum oxide. The preparation method comprises the following steps: carrying out high-temperature aerobic roasting on a nickel-aluminum-based hydrotalcite-like compound to construct Ni-Al interaction; and then, through doping of P in the nickel aluminum oxide, Ni-P interaction is constructed. Based on the synergistic interaction of Ni-Al and Ni-P, the regulation of electrons around P active metal is realized, so that the P active metal is balanced in an intermediate state between a metal simple substance and phosphide. Therefore, inactivation factors such as metal agglomeration, carbon deposition and phase change are inhibited, and excellent catalytic activity, selectivity and stability are shown.

Description

technical field [0001] The invention belongs to the technical field of application of novel catalytic materials, and in particular relates to a phosphorus-doped nickel-aluminum oxide and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Hydrodeoxygenation (HDO) is an important class of catalytic reaction processes that usually occur in the production of oxygenated compounds (such as biomass-based molecules) to biofuels or chemicals. The HDO reaction is generally carried out under high temperature and high pressure conditions, which can easily cause the agglomeration of active metals and carbon deposition on the surface, thereby affect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J27/185C10G3/00
CPCB01J23/755B01J27/1853C10G3/44C10G2400/04C10G2300/1011Y02P30/20
Inventor 王光辉李德昌潘政宜张珊
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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