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Preparation method of supported nickel catalyst for catalytic hydrogenation cracking of biomass

A technology for catalytic hydrogenation and biomass, which is used in physical/chemical process catalysts, preparation of liquid hydrocarbon mixtures, molecular sieve catalysts, etc. The effect of mild reaction conditions

Inactive Publication Date: 2016-11-16
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Some metal ions, such as metals such as Ru and V, and their complex catalysts can be used under mild conditions (80-135°C, 1barH 2 ) can selectively break the oxygen-containing bridges in lignin in a homogeneous system reaction; however, because the catalyst is very sensitive to the water in the system, it is difficult to separate and reuse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: Weigh Ni (NO 3 ) 2 ·6H 2 Put 7.25 g of O crystals in a 250 mL beaker, add 50 mL of deionized water to dissolve; use a pipette to measure 10.0 mL of orthobutyl silicate into the beaker, add 4.2 mL of triethanolamine, and the pH range of the solution is 8.3. Stir continuously, and drop 13.5 mL of triethyl titanate into the solution from the funnel. Stirring was continued for 30 min at room temperature of 25 °C. Pour the hydrolyzed liquid into the polytetrafluoroethylene liner, stuff it into the sealing cover, put it in the hydrolysis reaction kettle, and tighten the reaction kettle cover. The reaction kettle was placed in a thermostat at 180°C, and the hydrothermal reaction was continued for 48 hours. Then, cool the mixture after the hydrothermal reaction to room temperature, wait for the solid phase to settle at the bottom, pour it to remove most of the water phase, and wash the remaining solid phase slurry with 500mL of deionized water three times; the...

Embodiment 2

[0059] Embodiment 2: Weighing Ni 2 SO 4 ·6H 2 Put 5.25g of O crystals in a 250mL beaker, add 75mL of deionized water to dissolve; use a pipette to measure 12.0mL of hexyl orthosilicate and add it to the beaker, add 3.6mL of tetrabutylammonium hydroxide solution, the pH range of the solution is 8.5 . Stir continuously, and drop 15.2 mL of triethyl titanate into the solution from the funnel. Stirring was continued for 30 min at room temperature of 25 °C. Pour the hydrolyzed liquid into the polytetrafluoroethylene liner, stuff it into the sealing cover, put it in the hydrolysis reaction kettle, and tighten the reaction kettle cover. The reaction kettle was placed in a thermostat at 180°C, and the hydrothermal reaction was continued for 48 hours. Then, cool the mixture after the hydrothermal reaction to room temperature, wait for the solid phase to settle at the bottom, pour it to remove most of the water phase, and wash the remaining solid phase slurry with 500mL of deionize...

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Abstract

The invention provides a preparation method of a supported nickel catalyst for catalytic hydrogenation cracking of biomass, and belongs to a preparation method of the supported nickel catalyst. Titanate, silicate ester and nickel salt are selected as raw materials, triethanolamine and alkyl quaternary ammonium salt are taken as template agents, the components are added to a high-pressure kettle provided with a polytetrafluoroethylene lining, synthesis is performed at the temperature of 160 DEG C with a hydrothermal method, and a titanium silicalite molecular sieve supported nickel catalyst with high selective and high activity is prepared; the catalyst and the crop straw biomass are mixed and placed in the high-pressure kettle for catalytic hydrogenation cracking under the reaction conditions that the temperature is 80-180 DEG C and the H2 pressure is 3-10 bar, organic matter in the biomass is converted into liquid fuel and high value-added chemicals, and ingredients comprise saturated hydrocarbon, polyhydric alcohol and aromatic compounds. The catalyst has high activity and good selectivity, has the advantages of simple equipment, mild reaction, low cost and the like, and realizes clean and efficient conversion and comprehensive utilization of the crop straw biomass.

Description

technical field [0001] The invention relates to a method for preparing a supported nickel catalyst, in particular to a method for preparing a supported nickel catalyst for catalytic hydrocracking of biomass. Background technique [0002] Biomass is a renewable resource with many advantages such as wide source, abundant reserves and cleanness, and can be used to prepare a variety of fuels and chemicals. At present, biological methods and thermochemical conversion methods are mainly used to convert biomass into biofuels (such as bioethanol, biodiesel, biomass pyrolysis oil and synthesis gas, etc.) and high value-added organic chemicals. From the perspective of chemical composition, lignocellulosic biomass is mainly composed of cellulose, hemicellulose and lignin, and these components can be degraded into sugars, alcohols, phenols, aldehydes, ketones, carboxylic acids, esters High value-added organic chemicals and precursors for the preparation of specialty chemicals and high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/89C10G1/06
CPCB01J29/89C10G1/065C10G2300/1011C10G2300/70
Inventor 路瑶陆永超魏贤勇宗志敏
Owner CHINA UNIV OF MINING & TECH
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