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Citation: GU Zheng-Gui, MAO Mei-Fang, LIN Jun, LU Tian-Hong. Study on the Synthesis of Diethoxy Methane Using Toluene-p-Sulfonic Acid as Catalyst[J]. Chinese Journal of Applied Chemistry, ;2005, 22(12): 1366-1368. shu

Study on the Synthesis of Diethoxy Methane Using Toluene-p-Sulfonic Acid as Catalyst

1.
College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097

Corresponding author: GU Zheng-Gui,
Received Date: 17 April 2005
Available Online: 28 August 2005
Fund Project: 南京市重点科技计划资助项目(200405017) (200405017)

The synthesis of diethoxy methane was studied using ethanol and formaldehyde as the raw materials and toluene-p-sulfonic acid as the catalyst.It was found that when the mole ratio of ethanol to formaldehyde was 3.97:1,the mole ratio of toluene-p-sulfonic acid to the total raw materials 7%,the reaction temperature 25℃,the stirring speed 70 r/min and the reaction time 10 min,the yield of DEM was about 90.4%.Under the above reaction conditions,the yield was about 62.3% using HCl as the catalyst,and the amount of water in the product was higher and the waste acid in the continuous reaction would pollute the environment.In addition toluene-p-sulfonic acid can be used repeatedly.Therefore,this synthesis method is useful the practical production of diethoxy methane.
- catalytic synthesis,
- toluene-p-sulfonic acid,
- diethoxy methane,
- ethanol,
- formaldehyde
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