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2,4–二氟苯甲醛的合成
引用本文:王丽华,赵国志,周凤军. 2,4–二氟苯甲醛的合成[J]. 化工学报, 2005, 56(3): 474-476
作者姓名:王丽华  赵国志  周凤军
作者单位:辽宁工程技术大学资源与环境工程学院,辽宁 阜新 123000;阜新市热电厂,辽宁 阜新 123000
摘    要:2,4-Difluorobenzaldehyde was synthesized from 1,3-difluorobenzene and carbon monoxide with AlCl3 and HCl as catalyst in CO atmosphere at a pressure in the range of 1.5MPa. Effects on the converting ratio and yield were investigated. The results showed that the optimum technological conditions should be that n(1,3-difluorobenzene):n(AlCl3)=1.0:1.0, the reaction temperature was 60℃, amount of HCl was 1.0% of total mass of reation mixture, and the reation time was 20 hours. The selectivity of 2,4-difluorobenzaldehyde from 1,3-difluorobenzene was up to the purity of the refined product ω(2,4-difluorobenzaldehyde)≥98.81%.

关 键 词:1,3–二氟苯  一氧化碳  2,4–二氟苯甲醛  合成,
文章编号:0438-1157(2005)03-0474-03
收稿时间:2004-05-17
修稿时间:2004-6-25 

Synthesis experiment of 2,4-difluorobenzaldehyde
WANG Lihua,ZHAO Guozhi,ZHOU Fengjun. Synthesis experiment of 2,4-difluorobenzaldehyde[J]. Journal of Chemical Industry and Engineering(China), 2005, 56(3): 474-476
Authors:WANG Lihua  ZHAO Guozhi  ZHOU Fengjun
Abstract:2,4-Difluorobenzaldehyde was synthesized from 1,3-difluorobenzene and carbon monoxide with AlCl3 and HCl as catalyst in CO atmosphere at a pressure in the range of 1.5 MPa. Effects on the converting ratio and yield were investigated. The results showed that the optimum technological conditions should be that n(1,3-difluorobenzene)∶n(AlCl3)=1.0∶1.0, the reaction temperature was 60℃, amount of HCl was 1.0% of total mass of reation mixture, and the reation time was 20 hours. The selectivity of 2,4-difluorobenzaldehyde from 1,3-difluorobenzene was up to the purity of the refined product w(2,4-difluorobenzaldehyde) ≥98.81%.
Keywords:difluorobenzene  carbonmonoxide  2  4-difluorobenzaldehyde  synthesis  
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