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Method for catalyzing, esterifying and upgrading bio-oil under microwave condition

A bio-oil and condition technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve harsh reaction conditions, difficult operation, and high equipment quality requirements problem, to achieve the effect of improving stability and reducing the content of acid substances

Inactive Publication Date: 2010-08-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at problems such as harsh reaction conditions, high equipment quality requirements, and difficult operation in the existing conventional bio-oil upgrading treatment, and proposes a catalytic upgrading process for esterified bio-oil under unconventional microwave heating. qualitative method

Method used

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  • Method for catalyzing, esterifying and upgrading bio-oil under microwave condition
  • Method for catalyzing, esterifying and upgrading bio-oil under microwave condition
  • Method for catalyzing, esterifying and upgrading bio-oil under microwave condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation of catalyst: the Na that buys in the market + Type 732 cation exchange resin is washed with deionized water until clear water flows out, soaked in 4% NaOH for 4-8 hours, then washed with deionized water until neutral, then soaked in 4% HCl for 4-8 hours, washed with deionized water to pH = 6, dry at low temperature to obtain H + Type 732 strong acid ion exchange resin. Get a certain amount of zinc chloride and deionized water to make a mass concentration of 0.15% ZnCl 2 solution, adding H + Type 732 strongly acidic cation exchange resin carrier, impregnated with modified solution at room temperature for ion exchange, and finally washed with deionized water until Cl-free - So far (with 1% AgNO 3 indicator), dried to constant weight in a vacuum oven to obtain the ZnCl used in the experiment 2 Modified 732 type cation exchange resin catalyst expressed as 0.15% Zn 2+ / 732 resin catalyst.

[0025] 0.15% Zn 2+ / 732 resin catalyst is used in the method ...

Embodiment 2

[0032] Reactant and consumption thereof are identical with embodiment 1, and catalyst is 1.5gZn 2+ / 732 resin, five sets of reactions were performed at reaction temperatures of 45°C, 55°C, 65°C, 75°C, and 85°C, and the activity evaluation conditions were the same as in Example 1 except for the reaction temperature conditions. The results are shown in Table 2.

[0033] Table 2 Microwave esterification reaction results of ethanol, acetic acid and furfural at different temperatures

[0034] temperature / ℃

Embodiment 3

[0036] Reactant and its consumption are identical with embodiment 1, do five groups of reactions under catalyst consumption 0.2g, 0.5g, 0.75g, 1.0g, 1.5g conditions respectively (the mass ratio of corresponding catalyst and reactant is respectively 1: 154.5 . The results are shown in Table 3.

[0037] Table 3 Microwave esterification reaction results of ethanol, acetic acid and furfural under different catalyst dosage

[0038] Catalyst dosage / g

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Abstract

The invention discloses a method for catalyzing, esterifying and upgrading bio-oil under a microwave condition. In the method, acidic materials in the bio-oil are catalyzed, esterifyed and upgraded by adopting a ZnCl2-midified 732 type cation exchange resin as a catalyst and adding ethanol as a solvent and a reactant and under a microwave heating condition, and mixed solution of ethanol, acetic acid and furfural is adopted as imitation of a bio-oil complex system; esterification is performed under the condition of the catalyst of ZnCl2-midified 732 type cation exchange resin by adding a certain amount of hydrogen peroxide containing 30 percent of H2O2, and oxidizing furfural substances into the acidic materials, and a normal pressure microwave-assisted synthesis and extraction microwave reactor is adopted as a reaction device; the ZnCl2-midified 732 type cation exchange resin catalyst has better activity; and the conversion rate of the acetic acid which is obtained by catalyzing, esterifying and upgrading the bio-oil catalysis under the microwave condition reaches 70.37 percent; and the conversion rate of the furfural reaches 51.71 percent.

Description

technical field [0001] The invention relates to a method for catalytic upgrading of bio-oil, in particular to catalytic upgrading of bio-oil under microwave conditions for catalytic upgrading of bio-oil into high-grade liquid fuel. Background technique [0002] Biomass energy is an energy that fixes the energy of solar radiation in the form of biomass through the photosynthesis of green plants. It has large reserves, is recyclable, contains low N and S content, is highly clean, and greatly reduces air pollutants. Greenhouses The net emission of gaseous carbon dioxide is zero, which helps to solve the environmental problems caused by the consumption of fossil energy. The continuous rise of international crude oil prices and the prominent energy crisis have made bio-oil, as an environmentally friendly and renewable energy, attract widespread attention. Bio-oil is the product of short-term pyrolysis reaction and rapid cooling of plant straws, stems and leaves, etc. It has the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/04C11C3/00C10L1/02B01J31/26
Inventor 张凤蒋晓原楼辉郑小明
Owner ZHEJIANG UNIV
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