Technology for achieving catalytic liquefaction of biomass by means of M(salen) catalytic paper in ionic liquid

An ionic liquid and catalytic liquefaction technology, applied in the field of improved biomass liquefaction technology, to achieve the effects of easy process implementation, improvement of various performances, and increased liquefaction rate

Active Publication Date: 2016-12-07
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, M(salen) catalytic paper in ionic liquid catalyzes the biomass liquefaction process, and there is no relevant technical report yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: the technique of Zn (salen) catalytic paper catalytic liquefaction biomass in this ionic liquid, specific content is as follows:

[0017] (1) Preparation of Zn(salen)

[0018] Preparation of Schiff base ligand salen

[0019] Dissolve 2.5g of ethylenediamine and 8.5ml of salicylaldehyde in 18ml of methanol, stir in ice water for 30min, let stand for 15min, filter under reduced pressure with a G3 glass vessel, wash with 1ml of ether, and dry in vacuo at 33°C to obtain Pale yellow crystals, recrystallized with 160ml of absolute ethanol, and vacuum-dried at 33°C to obtain yellow crystals.

[0020] Synthesis

[0021] Dissolve 10.4 mmol of Schiff base salen in 120 ml of methanol, and another 10.4 mmol of zinc acetate dihydrate, dissolve in warm water, quickly transfer to the above reaction bottle, and quickly form a brown precipitate, heat at 70 ° C ~ 80 ° C Reflux for 1 hour, the brown precipitate turns into dark red crystals, cool to room temperature, trans...

Embodiment 2

[0026] Embodiment 2: the technology of Cu (salen) catalytic paper catalytic liquefaction biomass in this ionic liquid, specific content is as follows:

[0027] (1) For the preparation method of Cu(salen) catalytic paper, refer to Steps (1) and (2) of Example 1;

[0028] (2) Biomass was treated in the presence of ionic liquid N-ethyl-pyridine bisulfate and Cu(salen) catalytic paper; when treating biomass, the amount of Cu(salen) catalytic paper was 1% of the biomass quality 0.4%; for biomass treatment, the temperature was 200°C, and the time was 40 min; compared with conventional ionic liquid catalyzed biomass, Cu (salen) catalyzed paper catalyzed liquefaction process in ionic liquid increased the liquefaction rate by 25%.

Embodiment 3

[0029] Embodiment 3: the technique of Mn (salen) catalytic paper catalytic liquefaction biomass in this ionic liquid, specific content is as follows:

[0030] (1) For the preparation method of Mn(salen) catalytic paper, refer to steps (1) and (2) of Example 1;

[0031] (2) Biomass is treated in the presence of ionic liquid tetraethylammonium bisulfate and Mn(salen); when treating biomass, the amount of Mn(salen) catalytic paper is 0.6% of the mass of biomass; During the material treatment, the temperature was 220 °C and the time was 20 min; compared with the conventional ionic liquid catalyzed biomass, the process of catalyzing the liquefied biomass with Mn(salen) catalytic paper in the ionic liquid increased the liquefaction rate by 30%.

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Abstract

The invention discloses a technology for achieving catalytic liquefaction of biomass by means of M(salen) catalytic paper in an ionic liquid, and belongs to the technical field of biomass liquefaction. According to the method, on the condition that the ionic liquid and the M(salen) catalytic paper exist, catalytic liquefaction treatment is conducted on the biomass, wherein M in the M(salen) catalytic paper is Cu or Co or Fe or Mn or Zn. According to the technology for achieving catalytic liquefaction of the biomass by means of the M(salen) catalytic paper in the ionic liquid, the dosage of the catalyst is low, no strict requirement needs to be met, various liquefaction properties can be obviously improved, and the liquefaction efficiency can be obviously improved.

Description

technical field [0001] The invention relates to a technology for catalyzing liquefaction of biomass by M (salen) catalytic paper in ionic liquid, and is an improved biomass liquefaction technology. Background technique [0002] As a non-renewable resource, fossil fuels have limited reserves; at the same time, a series of environmental problems such as acid rain and greenhouse effect brought about by the burning of fossil fuels make the development of new energy sources imminent. Biomass energy, like new energy sources such as solar energy and wind energy, is a renewable energy source, and at the same time it is the only source of renewable liquid fuel. Biomass refers to any biomass (excluding fossil fuels) derived from plant photosynthesis and storing fixed solar energy. It has the characteristics of renewable, storable, large reserves, and carbon balance. According to its source, it can be divided into productive biomass (ie, energy crops) and waste biomass. If these biom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00B01J31/22
CPCB01J31/1805B01J2531/0252B01J2531/26C10G1/00C10G2300/1014
Inventor 周学飞
Owner KUNMING UNIV OF SCI & TECH
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