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A kind of α-pinene hydrogenation method based on biomass-based catalyst

A catalyst and biomass technology, applied in the field of ruthenium nanoparticles catalyzed α-pinene hydrogenation reaction, can solve problems that have not been seen yet, and achieve the effects of strengthening stabilization ability, high-efficiency catalysis, and good separation and reuse performance

Active Publication Date: 2022-02-08
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Utilizing the characteristics of the functional groups of various lignin resources, and using other functional groups to graft and modify lignin raw materials, so as to support, disperse and stabilize various metals, the preparation of metal nanoparticle materials has also attracted researchers. Attention [Green Chem.2010,12(2):220-222; Green Chem.2011,13(2):283-287; Material Today:Proceedings 2018,5(10):20811-20818; Applied Chemistry 2010,7 :787-791], but so far, there is no relevant report on the method of hydrogenation of pinene catalyzed by modified lignin stabilized ruthenium nanoparticles with magnetic separation properties at home and abroad

Method used

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  • A kind of α-pinene hydrogenation method based on biomass-based catalyst
  • A kind of α-pinene hydrogenation method based on biomass-based catalyst
  • A kind of α-pinene hydrogenation method based on biomass-based catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0016] [Example 1] Fe 3 o 4 Preparation of @ALN / Ru catalyst

[0017] Take 20.00 g of dried alkaline lignin in 100 mL of NaOH solution, sonicate for 10 min to promote dissolution, and adjust and control the pH to 11.5. After raising the temperature to 90°C, add 0.12mol ethylenediamine, and slowly add 18mL formaldehyde solution with a mass fraction of 37%, and continue to stir for 4 hours, then drop 1.0mol·L -1 The hydrochloric acid makes the lignin amine fully separated. After standing for 4 hours, filter, wash once with dilute hydrochloric acid, then wash with distilled water until neutral, air-dry at 105°C for 4 hours, grind into fine powder, and then vacuum-dry at 50°C for 4 hours to obtain ethylenediamine-modified lignin ALN .

[0018] 1.08g FeCl 3 ·6H 2 O and 0.50 g FeCl 2 4H 2 O was dissolved in 100mL of water, and after mechanical stirring at 65°C for 10min under a nitrogen atmosphere, 10mL of 5wt% NH dissolved in 0.80g of the lignin amine ALN prepared in the abo...

Embodiment 2

[0021] The magnetic lignin amine stabilized metal ruthenium nanoparticles Fe prepared by 10.0mg embodiment 1 3 o 4 @ALN / Ru and 1mL α-pinene were added to a stainless steel autoclave, and the air was replaced with hydrogen for 4 to 5 times, and then filled with 1MPa H 2 , placed in an oil bath to control the temperature in the reactor to 70° C., and reacted for 2 hours under mechanical stirring at 400 rpm. After the reaction, the reaction system was taken out for magnetic separation and the liquid was taken for gas chromatography analysis. The catalytic results are shown in Table 1.

Embodiment 3

[0023]The magnetic lignin amine stabilized metal ruthenium nanoparticles Fe prepared by 30.0mg embodiment 1 3 o 4 @ALN / Ru and 1mL α-pinene were added to a stainless steel autoclave, and the air was replaced with hydrogen for 4 to 5 times, and then filled with 1MPa H 2 , placed in an oil bath to control the temperature in the reactor to 70° C., and reacted for 2 hours under mechanical stirring at 400 rpm. After the reaction, the reaction system was taken out for magnetic separation and the liquid was taken for gas chromatography analysis. The catalytic results are shown in Table 1.

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Abstract

The invention relates to a method for catalyzing the hydrogenation reaction of α-pinene by metal nanoparticles based on biomass carrier, specifically, using alkali lignin-stabilized ruthenium nanoparticles functionalized with magnetism and organic amines to catalyze α-pinene The method for preparing cis-pinane by hydrogenation reaction belongs to the technical field of forest product fine chemicals preparation. The present invention uses cheap and easy-to-obtain industrial by-product alkaline lignin resources as raw materials, utilizes the characteristics of various functional groups in its structure, and introduces magnetic functional groups and organic amine groups into the material by chemical bonding, respectively. It greatly enhances its ability to stabilize metal ruthenium nanoparticles, and at the same time endows it with a magnetic separation function, so that it can be used as an efficient hydrogenation catalyst for α-pinene. After the reaction, the catalyst is easily separated by a magnet, and has excellent reusability. The present invention uses renewable biomass resources as the substrate to construct a catalytic system to catalyze another high-value-added conversion reaction of biomass, which has both the effectiveness of the reaction and the simplicity of separation, and is a kind of "take biomass, use it Biomass" green catalytic process.

Description

technical field [0001] The invention relates to a green catalytic method for the hydrogenation reaction of α-pinene, specifically a method for catalyzing the hydrogenation reaction of α-pinene by using amine-modified biomass lignin stabilized ruthenium nanoparticles, which belongs to the forest product fine Chemical preparation technology field. Background technique [0002] my country is a country rich in turpentine resources, but compared with developed countries, there is a big gap in the deep-processing output and quality of these cheap turpentine resources, and most of them are exported in the form of raw materials. Therefore, in-depth research on the production process of its high value-added downstream products has very important strategic significance. Among them, the main component of turpentine, the light component of turpentine, is α-pinene, which can be obtained through selective hydrogenation and saturation to obtain cis-pinane products, and is an important raw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C5/03C07C13/40B01J31/06
CPCC07C5/03B01J31/069C07C2602/42C07C13/40Y02P20/584
Inventor 袁冰解从霞陈祥云于凤丽于世涛
Owner QINGDAO UNIV OF SCI & TECH