Method for preparing alkane fuels through lignin and application thereof

A technology for lignin and alkane, which is applied in the field of preparing alkane fuel from lignin, can solve the problems of harsh conditions such as temperature and pressure, unfavorable for large-scale industrial production, and high requirements on reaction vessels, and achieves improved reaction conditions, high yield, Simple preparation process

Inactive Publication Date: 2013-01-02
UNIV OF SCI & TECH OF CHINA
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pretreatment process of these methods has strict requirements on conditions such as temperature and pressure, and has high requirements on the reaction vessel, which is not conducive to large-scale industrial production.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing alkane fuels through lignin and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 1 part of ethanol, 1 part of alkali lignin and 1 part of 30% volume hydrogen peroxide solution in a hydrothermal kettle, and keep at 40°C for 12 hours. After the reaction, the reaction solution was centrifuged to collect the liquid. The obtained liquid was added to the autoclave, and at the same time, 0.5 parts of Cu-Ru / SBA-ZrO 2 Catalyst, through 1MPa H 2 , 200°C for 24h. Finally, 12 wt% alkane product was obtained.

Embodiment 2

[0031] Weigh 10 parts of methanol, 1 part of sodium lignosulfonate and 5 parts of 30% volume hydrogen peroxide solution in a hydrothermal kettle, and keep at 40°C for 8 hours. After the reaction, the reaction solution was centrifuged to collect the liquid. The resulting liquid was added to the autoclave with 0.2 parts of Ru / SBA-ZrO 2 Catalyst, through 4MPaH 2 , 260 ° C reaction 8h. Finally, 9 wt% alkane product was obtained.

Embodiment 3

[0033] Weigh 50 parts of ethanol, 1 part of pyrolytic lignin and 3 parts of 30% volume hydrogen peroxide solution in a hydrothermal kettle, and keep at 60°C for 20h. After the reaction, the reaction solution was centrifuged to collect the liquid. The resulting liquid was added to the autoclave with 0.5 parts of Ru / SBA-CeO 2 Catalyst, feed 2MPa H 2 , 180 ° C reaction 8h. Finally, 19 wt% alkane product was obtained.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for preparing alkane fuels through lignin. The method includes the following steps: a, mixing the lignin, a hydrogen peroxide solution and a solvent in proportion, reacting at a certain temperature, and collecting liquid products; and b, adding a metal catalyst into the liquid products obtained in the step a and obtaining alkane with the composition of C6-C9 through reduction reaction in a reducing atmosphere. According to the method, the alkane fuels are prepared by the lignin through two steps including hydrogen peroxide oxidation and catalytic hydrogenation reduction, the reaction condition is mild, the conversion rate and yield are high, the preparation process is simple, and the method is convenient to operate. According to the technical scheme, a novel way for preparing the alkane fuels through the non-fossil lignin, and a quite bright application prospect is provided.

Description

technical field [0001] The invention relates to a method for preparing alkane fuel, in particular to a method for preparing alkane fuel from lignin and its application. Background technique [0002] Lignin is an amorphous, aromatic polymer that widely exists in plants and contains oxyphenylpropanol or its derivatives in its molecular structure. Its reserves in nature are second only to cellulose. It is a large renewable resource and the only non-petroleum resource that can provide a large amount of renewable aryl compounds in nature. [0003] Alkanes are hydrocarbon organic compounds with only carbon-carbon single bonds and carbon-hydrogen bonds. When they are completely burned, they will generate carbon dioxide and water, and release a lot of heat at the same time. They can be used as excellent fuels. However, the main source of alkanes is still non-renewable fossil resources such as natural gas and petroleum. With the depletion of fossil resources, it is imminent to find...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C10G1/08
Inventor 张颖曲艳超许光月
Owner UNIV OF SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap