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Method for preparing carbon-loaded heteropoly acid material from wood fiber biomass

A technology for loading heteropolyacids and wood fibers, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as shedding, and achieve the effects of simple operation, broad application prospects, and easy construction

Inactive Publication Date: 2019-05-17
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional preparation method is to impregnate activated carbon with sodium molybdate, sodium tungstate phosphoric acid solution, and then reflux. In this method, the carbon is first prepared and then the composite material is prepared, and the polyacid is easy to fall off from the carbon.

Method used

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  • Method for preparing carbon-loaded heteropoly acid material from wood fiber biomass
  • Method for preparing carbon-loaded heteropoly acid material from wood fiber biomass
  • Method for preparing carbon-loaded heteropoly acid material from wood fiber biomass

Examples

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Effect test

Embodiment 1

[0031] A method for preparing carbon-loaded molybdenum heteropolyacid material from lignocellulosic biomass, comprising the following steps:

[0032] (1) Weigh 0.2 mmol of sodium molybdate solid into a beaker filled with 20 mL of deionized water, and put it on a magnetic stirrer for stirring.

[0033] (2) Add 1g of wood crushed to the above solution, then add 0.5ml of phosphoric acid to the reaction system, transfer it into a stainless steel reaction kettle, and carry out hydrothermal synthesis reaction, the reaction temperature is 180°C, and the reaction time is 10h.

[0034] (3) After the reaction is finished, cool to room temperature, centrifuge and collect the product, and then ultrasonically wash it several times with deionized water and absolute ethanol.

[0035] (4) Carry out drying treatment in an oven to obtain a yellow-black carbon-supported molybdenum heteropolyacid material.

[0036] combine figure 1 It can be seen from A and B that when wood fiber is used as raw...

Embodiment 2

[0038] A method for preparing carbon-loaded tungstic heteropolyacid materials from lignocellulosic biomass, comprising the following steps:

[0039] (1) Weigh 0.2 mmol of sodium tungstate solid into a beaker filled with 20 mL of deionized water, and put it on a magnetic stirrer for stirring.

[0040] (2) Add 1g of wood crushed to the above solution, then add 0.5ml of phosphoric acid to the reaction system, transfer it into a stainless steel reaction kettle, and carry out hydrothermal synthesis reaction, the reaction temperature is 180°C, and the reaction time is 10h.

[0041] (3) After the reaction is finished, cool to room temperature, centrifuge and collect the product, and then ultrasonically wash it several times with deionized water and absolute ethanol.

[0042] (4) Drying in an oven can produce black carbon-supported tungstic acid polyacid materials.

[0043] combine figure 2 It can be seen from A and B that when wood fiber is used as raw material, small particles ar...

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Abstract

The invention discloses a method for preparing a carbon-loaded heteropoly acid material from wood fiber biomass. The method comprises the following steps: (1) adding an NaMoO4.6H2O solid into a vesselcontaining deionized water and stirring to obtain a solution; (2) adding smashed wood fiber biomass into the solution, then adding phosphoric acid into a reaction system to perform hydrothermal synthesis reaction; (3) cooling to room temperature after completing the reaction, collecting a generated product centrifugally, and then washing several times by using deionized water and absolute ethyl alcohol; and (4) performing drying treatment to obtain the carbon-loaded heteropoly acid material.

Description

technical field [0001] The invention relates to the technical field of application of catalytic materials and biomass materials, in particular to a method for preparing carbon-loaded heteropolyacid materials from lignocellulosic biomass. Background technique [0002] Heteropoly acid has strong acidity and oxidizing properties, and can catalyze various reactions such as hydration, esterification, dehydrogenation, and condensation. Carbon has a large surface area and strong adsorption. The combination of the two can enhance the contact of reactants and accelerate the catalytic reaction. The traditional preparation method is to impregnate activated carbon with sodium molybdate, sodium tungstate phosphoric acid solution, and then reflux. In this method, the carbon is first prepared and then the composite material is prepared, and the polyacid is easy to fall off from the carbon. Contents of the invention [0003] The object of the present invention is to provide a kind of meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J27/188
Inventor 沈寿国韩成良李赓刘盛萍李菁
Owner HEFEI UNIV
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