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A kind of method and its catalyst of rosin hydrogenation preparation hydrogenated rosin

A technology for rosin hydrogenation and hydrogenation of rosin, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low catalytic activity of catalysts, easy shedding and loss, etc., and achieve simple catalyst separation and environmental protection. The effect of friendliness and mild reaction conditions

Active Publication Date: 2022-05-13
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low catalytic activity and easy shedding and loss of catalysts in the prior art, the present invention provides a method for preparing hydrogenated rosin by hydrogenating rosin

Method used

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  • A kind of method and its catalyst of rosin hydrogenation preparation hydrogenated rosin
  • A kind of method and its catalyst of rosin hydrogenation preparation hydrogenated rosin
  • A kind of method and its catalyst of rosin hydrogenation preparation hydrogenated rosin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Catalyst Pd / CxNy@mSiO 2 preparation of

[0028] S 1 , Amphiphilic nano-mesoporous material CxNy@mSiO 2 The preparation of 0.16g CTAB (cetyltrimethylammonium bromide) and 5mL EDA (ethylenediamine) were weighed respectively and dispersed in the mixed solution of ethanol and water of 50mL (ethanol: water=3:7 ), then add 0.12g resorcinol, ultrasonically disperse for 30min, add dropwise 0.24mL formaldehyde, stir for 2h, then add 50mg CTAB, dropwise add 0.8mL TEOS (tetraethyl orthosilicate), continue to stir for 12h, then let stand Aging for 48 hours, centrifugal separation, and finally high-temperature carbonization in an argon atmosphere to obtain the amphiphilic nano-mesoporous material CxNy@mSiO 2 ;

[0029] S 2 , Amphiphilic nanocatalyst Pd / CxNy@mSiO 2 Preparation, weigh 200mg CxNy@mSiO 2 Add it to a three-necked flask, ultrasonically disperse it in an ethanol solution at room temperature, and then add 50mg of PdCl 2 , continue to disperse for 10min, th...

Embodiment 2

[0035] Embodiment 2 rosin hydrogenation prepares hydrogenated rosin

[0036] Weigh 1g of rosin and add it to a stainless steel mechanically stirred tank, then add 4mL of water and 6mL of 200# solvent oil, and weigh 20mg of the amphiphilic catalyst Pd / CxNy@mSiO 2 Mix evenly, replace the gas in the kettle with 1MPa hydrogen for 4 times, then flush into 4MPa hydrogen, and react with mechanical stirring at 140°C for 4 hours. After the reaction, let stand for a period of time to separate the catalyst from the product, collect the upper product phase and use chromatography Quantitative analysis shows that the conversion rate of rosin reaches 99.70%, the selectivity of tetrahydroabietic acid in the product is 54.08%, and the selectivity of dihydroarginic acid is 42.03%, which meets the requirements of super-grade rosin.

Embodiment 3

[0037] Embodiment 3 rosin hydrogenation prepares hydrogenated rosin

[0038] Weigh 1g of rosin and add it to a stainless steel mechanically stirred tank, then add 4mL of water and 6mL of 200# solvent oil, and weigh 20mg of the amphiphilic catalyst Pd / CxNy@mSiO 2 Mix evenly, replace the gas in the kettle with 1MPa hydrogen for 5 times, then flush into 2MPa hydrogen, and react with mechanical stirring at 120°C for 4 hours. After the reaction, let stand for a period of time to separate the catalyst from the product, collect the upper product phase and use chromatography Quantitative analysis shows that the conversion rate of rosin reaches 94.38%, the selectivity of tetrahydroabietic acid in the product is 54.18%, and the selectivity of dihydroarginic acid is 35.40%, which meets the requirements of super-grade rosin.

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Abstract

The invention belongs to the technical field of hydrogenated rosin preparation, and discloses a method for preparing hydrogenated rosin by hydrogenating rosin and a catalyst thereof. The method for preparing hydrogenated rosin by hydrogenating rosin is, in a mixed solution of water and 200# solvent oil, in a hollow amphiphilic nanocatalyst Pd / CxNy@mSiO 2 Under the catalytic action of 2 , Catalytic hydrogenation of rosin to prepare hydrogenated rosin. Pd-based catalyst Pd / CxNy@mSiO provided by the invention 2 It shows good catalytic activity and product selectivity, and the reaction conditions of rosin hydrogenation reaction are mild and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of hydrogenated rosin preparation, in particular to a method for preparing hydrogenated rosin by hydrogenating rosin and a catalyst thereof. Background technique [0002] Rosin is the solid left after distillation and cooling of pine oil exuded from pine plants. Its general color is yellow or brown. It is a renewable chemical raw material and is widely used in materials, medicine, rubber, graphite and other industries; my country is a major producer of rosin, with an output of 6.7987 million tons per year, but the utilization rate is low, and it is exported directly without further processing, causing a large amount of economic losses. Rosin is a kind of complex compound, its main component is abietic acid type resin acid, abietic acid type resin acid has a pair of conjugated double bonds and a three-membered phenanthrene ring skeleton structure, and has multiple isomers, Including pimaric acid, abietic acid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/08B01J35/10C09F1/04
CPCB01J27/24C09F1/04B01J35/396B01J35/51B01J35/61
Inventor 于凤丽解从霞吴方柱袁冰于世涛
Owner QINGDAO UNIV OF SCI & TECH
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