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Glyceryl solid acid catalyst and application thereof

A solid acid catalyst, catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, organic chemistry, etc., can solve the problem of high cost of Nafion-212 catalyst, achieve excellent substrate generalization The effect of adaptability, cheap and easy-to-obtain raw materials, and simple synthesis method

Active Publication Date: 2015-09-30
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

Due to the higher cost of Nafion-212 catalyst

Method used

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  • Glyceryl solid acid catalyst and application thereof
  • Glyceryl solid acid catalyst and application thereof
  • Glyceryl solid acid catalyst and application thereof

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Embodiment Construction

[0026] 1. Synthesis of Glyceryl Solid Acid Materials

[0027]Using glycerin as raw material, with a certain amount of concentrated sulfuric acid (concentration above 75% (here specifically 98%), the mass ratio of glycerin to concentrated sulfuric acid is between 1:0.4 and 1:10), without or adding hard template agent The silicon oxide material (the mass ratio of glycerol to hard template agent silicon oxide is between 1:0.1 and 1:10) is mixed, treated at high temperature (100°C to 330°C), and then filtered. Do not use or wash with HF aqueous solution (mass concentration 1%-10%) to remove the hard template. Washing with water and drying; in this process, the hard template agent silicon oxide may not be added. The preparation process of the glyceryl solid acid catalyst obtained in this case can avoid the step of washing the hard template agent with HF. The prepared catalysts are detailed in Examples 1-17.

[0028] Table 1. Catalysts prepared under different synthesis condition...

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Abstract

The invention relates to an application of a solid acid catalyst taking glycerol as a raw material in synthesis of reproducible diesel or aviation kerosene. A preparation method of the glyceryl solid acid catalyst, disclosed by the invention, comprises the following steps: uniformly mixing glycerol and concentrated sulfuric acid in a certain proportion, enabling a mixture to react for a certain period of time at a certain temperature, and filtering and washing a solid product obtained by reaction to obtain the catalyst. In a glycerol and sulfuric acid reaction process, a silicon oxide hard template can be added and removed by using HF after reaction, so that the performance of the catalyst can be remarkably improved. According to the invention, material of the catalyst is cheap and easily-available, the preparation process is simple, and relatively high activity and selectivity can be realized on alkylation reaction between lignocellulose base furan compounds and a carbonyl compound. Diesel or aviation kerosene alkane can be obtained after an alkylate product obtained by reaction is subjected to hydrodeoxygenation. The invention provides a cheap and efficient catalyst for synthesizing a diesel or aviation kerosene precursor by virtue of a lignocellulose platform chemical compound.

Description

technical field [0001] The invention relates to a preparation method of a glycerin-based solid acid catalyst and its application in the alkylation reaction between lignocellulose-based platform compounds. Specifically, it includes: mixing glycerin, concentrated sulfuric acid (and silicon oxide hard template material) uniformly in a certain proportion, reacting at a certain temperature for a period of time, filtering (and using HF to remove the template agent), and washing to obtain. Compared with the currently reported solid acid catalysts, the catalyst raw materials of the invention are cheap and easy to obtain, the preparation process is simple, and the catalyst has higher activity and selectivity for the alkylation reaction between lignocellulosic furan compounds and carbonyl compounds. The alkylated product obtained by this reaction can obtain diesel or aviation kerosene alkanes after hydrodeoxygenation. The invention provides a cheap and high-efficiency catalyst for synt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C07D307/36C07D307/42C07D307/54
Inventor 李宁李广亿张涛王爱琴王晓东丛昱
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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