Preparation method of novel metal-biochar-based hydrogenation catalyst and application thereof

A hydrogenation catalyst, biochar technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of low conversion rate of hydrodeoxygenation and easy deactivation and other problems to achieve the effect of improving selectivity and broad application prospects

Active Publication Date: 2020-06-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the hydrodeoxygenation conversion rate of this catalyst applied to other substances is still lower than the theoretical value, and it is easily deactivated in the reaction

Method used

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  • Preparation method of novel metal-biochar-based hydrogenation catalyst and application thereof
  • Preparation method of novel metal-biochar-based hydrogenation catalyst and application thereof
  • Preparation method of novel metal-biochar-based hydrogenation catalyst and application thereof

Examples

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Embodiment 1

[0048] The preparation method of the present embodiment comprises the steps:

[0049] The preparation of a novel metal-biochar-based hydrogenation catalyst comprises the following steps, such as figure 1 Shown:

[0050] (1) Take the template agent, add deionized water to configure a certain concentration of the template agent suspension; wherein the template agent is a mixture of sodium alginate and cellulose nanofibers; the concentration of sodium alginate and cellulose nanofibers in the template agent suspension Both are 1.0wt%;

[0051] (2) Weigh 30g of degreased coffee grounds and place them in a beaker, add 150mL of deionized water to form a flowable slurry, add 100mL of templating agent suspension into the flowable slurry with a pipette, stir evenly and dry in an oven for 24 hours at a drying temperature of 110°C; grind the dried mixture into powder, CO 2 Carry out carbonization in a fixed-bed two-stage reactor under atmosphere, set the carbonization temperature at 60...

Embodiment 2

[0056] The preparation method of the novel metal-biochar-based hydrogenation catalyst is the same as in Example 1, the difference being that in step (5) activated carbon and Ni(NO 3 ) 2 and Ce(NO 3 ) 3 ·6H 2 The mass ratio of O is 100:18:4.

Embodiment 3

[0058] The preparation method of the novel metal-biochar-based hydrogenation catalyst is the same as in Example 1, the difference being that in step (5) activated carbon and Ni(NO 3 ) 2 and Ce(NO 3 ) 3 ·6H 2 The mass ratio of O is 100:24:4.

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Abstract

The invention belongs to the field of preparation of liquid fuel and chemical products through catalytic conversion of biomass, and relates to a preparation method of a novel metal-biochar-based hydrogenation catalyst and an application thereof. The method comprises the following steps: preparing a template agent suspension; then introducing coffee residue slurry, stirring, drying, grinding into powder, and carrying out high-temperature carbonization to obtain biochar; washing with diluted hydrochloric acid and drying to obtain activated carbon; mixing the metal-biochar-based hydrogenation catalyst with nickel nitrate, cerium nitrate and deionized water, then aging, drying and roasting in air, and finally reducing in hydrogen flow to obtain the metal-biochar-based hydrogenation catalyst. The biochar obtained by carbonizing the waste coffee grounds at a high temperature in a CO2 atmosphere has larger specific surface area and specific pore volume and extremely high mesoporous rate, so that the number of active sites of the catalyst is effectively increased, and the problem that the catalyst is easy to block and inactivate pore passages is solved; meanwhile, the yield of aromatic hydrocarbon after deoxidation and hydrogenation of a biomass pyrolysis product is increased, and the method is low in cost, safe, environmentally friendly and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of catalytic conversion of biomass to prepare liquid fuel and chemical products, and in particular relates to a preparation method and application of a novel metal-biochar-based hydrogenation catalyst. Background technique [0002] In today's world, with the increasing consumption of fossil fuels and the greenhouse gas CO 2 With the continuous increase of emissions and the increasingly serious energy and environmental problems, finding and developing renewable clean energy has become the top priority for the world. Biomass as a renewable clean energy has attracted widespread attention, especially bio-oil obtained by pyrolysis of biomass, which has great potential in partially replacing fossil fuels. Vigorously developing biomass energy is of great significance to the progress of human society and the maintenance of civilization. [0003] At present, the utilization of biomass energy at home and abroad mainly include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C10G45/06B01J35/10
CPCB01J23/83C10G45/06B01J35/1004Y02P30/20
Inventor 李小华刘铁翼邵珊珊张鸿昌闫金龙葛胜楠吕志超
Owner JIANGSU UNIV
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