Nickel/semi-coke catalyst based on boron doping and its preparation and application

A catalyst, boron doping technology, applied in the field of metal-supported biomass semi-coke catalyst, can solve the problems of shortened catalyst life and deactivation, etc.

Active Publication Date: 2022-05-13
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the reaction temperature is too high, the carrier lignite coke will participate in the steam gasification reaction, which will shorten the life of the catalyst and eventually deactivate it.

Method used

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  • Nickel/semi-coke catalyst based on boron doping and its preparation and application
  • Nickel/semi-coke catalyst based on boron doping and its preparation and application
  • Nickel/semi-coke catalyst based on boron doping and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 0.743g Ni(NO 3 ) 2 ·6H 2 O, prepared into 45mL nickel nitrate aqueous solution. Weigh 0.172g H 3 BO 3 , Prepared into 45mL boric acid aqueous solution.

[0041] Weigh 10 g of 40-60 mesh biomass particles prepared from corn cobs, add them into the above-mentioned nickel nitrate aqueous solution, disperse and shake by ultrasonic at room temperature for 1 h, and stir for 24 h to impregnate with equal volume.

[0042] The biomass particles fully impregnated with nickel nitrate were dried at 105° C. for 12 h to obtain nickel salt / biomass precursor.

[0043] The obtained nickel salt / biomass precursor was added into the above-mentioned boric acid aqueous solution, stirred at room temperature for 1 h, and impregnated with equal volume again.

[0044] After the impregnated precursor was dried at 105 °C for 12 h, the N 2 Under the atmosphere, the temperature was raised from room temperature to 600°C at a heating rate of 10°C / min, and kept for 30 minutes to prepare a ...

Embodiment 2

[0047] Weigh 0.743g Ni(NO 3 ) 2 ·6H 2 O, prepared into 45mL nickel nitrate aqueous solution. Weigh 0.601g H 3 BO 3 , Prepared into 45mL boric acid aqueous solution.

[0048] Weigh 10 g of 40-60 mesh biomass particles prepared from corn cobs, add them into the above-mentioned nickel nitrate aqueous solution, disperse and shake by ultrasonic at room temperature for 1 h, and stir for 24 h to impregnate with equal volume.

[0049] The biomass particles fully impregnated with nickel nitrate were dried at 105° C. for 12 h to obtain nickel salt / biomass precursor.

[0050] The obtained nickel salt / biomass precursor was added into the above-mentioned boric acid aqueous solution, stirred at room temperature for 1 h, and impregnated with equal volume again.

[0051] After the impregnated precursor was dried at 105 °C for 12 h, the N 2 Under the atmosphere, the temperature was raised from room temperature to 600°C at a heating rate of 10°C / min and kept at a temperature of 30 minute...

Embodiment 3

[0054] Except H 3 BO 3 Except for the dosage of 0.858g, the other preparation processes were exactly the same as in Example 1, and the boron-doped nickel / semi-coke catalyst 5Ni-5B / C was prepared.

[0055] In the catalyst prepared in this example, the mass fractions of Ni and B were both 5%.

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Abstract

The invention discloses a boron-doped nickel / semi-coke catalyst, which is prepared by impregnating biomass in equal volumes with an aqueous solution of a soluble nickel salt and an aqueous solution of boric acid, drying and heating to 600-800°C for pyrolysis, and preparing the The transition metal nickel is an active component, the biomass semi-coke is a carrier, and the biomass semi-coke is mixed with a metal-loaded biomass semi-coke catalyst composed of an auxiliary agent boron capable of forming a solid solution with the biomass semi-coke carrier. The catalyst of the present invention does not require pretreatment of the carrier, and uses it to catalyze steam reforming conversion of biomass gasification tar, has high catalytic activity and stability, high tar conversion rate, and long catalyst life.

Description

technical field [0001] The invention belongs to the technical field of biomass energy chemical industry, and relates to a metal-loaded biomass semi-coke catalyst for catalyzing the steam reforming reaction of biomass gasification tar, and a preparation method of the catalyst. Background technique [0002] With the increase of energy demand and the increasingly severe global environmental problems, it is urgent to vigorously develop clean and sustainable renewable energy. Biomass, as a renewable energy source, is the main potential fuel and chemical source in the future after coal, oil and natural gas. [0003] Biomass gasification can efficiently convert biomass into syngas for further use in the production of liquid fuels, chemicals and power generation. However, tar is inevitably produced during the gasification of biomass. The generation of tar not only reduces the gasification efficiency, but also causes problems such as pipeline blockage and environmental pollution. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J23/78B01J35/10B01J35/02C01B3/32C10B53/02C10B57/06
CPCB01J23/755B01J23/78B01J35/1019B01J35/023C01B3/32C10B57/06C10B53/02C01B2203/0233C01B2203/1058C01B2203/1082C01B2203/1211Y02E50/10
Inventor 杜朕屹刘红利徐趁李文英冯杰
Owner TAIYUAN UNIV OF TECH
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