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Nickel phosphide-zirconium phosphate composite catalyst with mesoporous structure as well as preparation method and application thereof

A composite catalyst and mesoporous structure technology, applied in catalyst activation/preparation, physical/chemical process catalysts, phosphorus compounds, etc., can solve the problems of large particles of active components, easy loss of active components, poor stability, etc. Simple, promote industrial application, promote the effect of hydrodeoxygenation

Active Publication Date: 2021-04-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nickel phosphide catalyst prepared by the traditional wet impregnation method has large particles of active components, poor dispersion, easy agglomeration, easy loss of active components, and poor stability.

Method used

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  • Nickel phosphide-zirconium phosphate composite catalyst with mesoporous structure as well as preparation method and application thereof
  • Nickel phosphide-zirconium phosphate composite catalyst with mesoporous structure as well as preparation method and application thereof
  • Nickel phosphide-zirconium phosphate composite catalyst with mesoporous structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of simple nickel phosphide:

[0040] (1) Take by weighing 4.653g nickel nitrate hexahydrate at room temperature, join in the beaker containing 100mL deionized water, stir vigorously for 10min and then ultrasonic for 10min until the nickel nitrate solid is completely dissolved to obtain a clear and transparent green solution, which is referred to as solution A; Add 2.536g of diammonium hydrogen phosphate into a beaker containing 60mL of deionized water, and stir vigorously for 10 minutes to obtain a clear and transparent colorless solution, which is designated as solution B. Solution B was added dropwise to solution A under vigorous stirring, and continued stirring and aging for 1 h after the dropwise addition was completed. After the stirring, the obtained green suspension was transferred to a polytetrafluoroethylene-lined hydrothermal reaction kettle, and hydrothermally reacted at 180°C for 24 hours. After natural cooling to room temperature, the sample was...

Embodiment 2

[0044] Ni x Preparation of P-ZrP-0.1 (Ni x P-ZrP represents nickel phosphide-zirconium phosphate composite catalyst; 0.1 represents the molar ratio of Zr and Ni in the catalyst, i.e. Zr / Ni=0.1):

[0045] (1) Weigh 4.653g of nickel nitrate hexahydrate and 0.687g of zirconium nitrate pentahydrate at room temperature, add them to a beaker containing 100mL of deionized water, stir vigorously for 10min and then ultrasonicate for 10min until the solid is completely dissolved to obtain a clear and transparent green solution, record Make solution A; take 2.958g of diammonium hydrogen phosphate and add it to a beaker containing 60mL of deionized water, stir vigorously for 10min to obtain a clear and transparent colorless solution, which is designated as solution B. Solution B was added dropwise to solution A under vigorous stirring, and continued stirring and aging for 1 h after the dropwise addition was completed. After the stirring, the obtained green suspension was transferred to ...

Embodiment 3

[0049] Ni x Preparation of P-ZrP-0.5 (0.5 represents the molar ratio of Zr and Ni in the catalyst, i.e. Zr / Ni=0.5):

[0050] (1) Weigh 4.653g of nickel nitrate hexahydrate and 3.4346g of zirconium nitrate pentahydrate at room temperature, add them to a beaker containing 100mL of deionized water, stir vigorously for 10min and then sonicate for 10min until the solids are completely dissolved to obtain a clear and transparent green solution. Make solution A; take 5.0711g of diammonium hydrogen phosphate and add it into a beaker containing 60mL of deionized water, stir vigorously for 10min to obtain a clear and transparent colorless solution, which is called solution B. Solution B was added dropwise to solution A under vigorous stirring, and continued stirring and aging for 1 h after the dropwise addition was completed. After the stirring, the obtained green suspension was transferred to a polytetrafluoroethylene-lined hydrothermal reaction kettle, and hydrothermally reacted at 1...

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Abstract

The invention belongs to the technical field of catalyst synthesis, and particularly discloses a nickel phosphide-zirconium phosphate composite catalyst with mesoporous structure as well as a preparation method and an application thereof. The nickel phosphide and zirconium phosphate composite catalyst with the mesoporous structure, disclosed by the invention, is composed of two components, namely nickel dodecaphosphate (Ni12P5) and zirconium pyrophosphate (ZrP2O7), and the molar ratio of Zr to Ni is 0.1-1.0. The nickel phosphide and zirconium phosphate composite catalyst is prepared through a one-pot method, nickel phosphide and zirconium phosphate are doped together on the molecular level, the dispersity of nickel phosphide is high, agglomeration is not likely to happen, and the nickel phosphide and zirconium phosphate composite catalyst has excellent stability. The prepared catalyst has excellent catalytic activity for the hydrodeoxygenation reaction of guaiacol, the guaiacol conversion rate reaches 100% at 250 DEG C under 3MPa H2, and the selectivity for cyclohexane can reach 91.13%.

Description

technical field [0001] The invention belongs to the technical field of catalyst synthesis, in particular to a mesoporous structure nickel phosphide-zirconium phosphate composite catalyst and its preparation method and application. Background technique [0002] In today's society, the growing energy demand and the environmental problems caused by the consumption of fossil resources force human beings to seek a clean and renewable energy to replace fossil energy. Biomass is the only renewable carbon source in nature and is an ideal substitute for fossil energy. Lignocellulose is the most abundant resource in biomass and has shown great potential in the production of hydrocarbon fuels and high-value chemicals. The conversion of lignocellulosic biomass into bio-oil by fast pyrolysis or hydrothermal depolymerization is an effective way to produce advanced biofuels. However, bio-oils are mainly composed of oxygenated organic compounds, including phenols and their derivatives, fu...

Claims

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Application Information

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IPC IPC(8): B01J27/185B01J37/10B01J37/08B01J35/10C07C13/18C07C1/20C01B25/08C01B25/42
Inventor 欧阳新平饶睿恒钱勇邱学青郭岳樊荻谢心怡楼宏铭
Owner SOUTH CHINA UNIV OF TECH
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