Open AccessDirect Synthesis of Glycol Ethyl Ethers from Glycol with Modified HZSM-5 as Catalyst
Author(s) -
Gang-Sen Li,
Xing Wen,
Junwen Wang,
Yadong Zhang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/729/1/012092
Subject(s) - catalysis , ethylene glycol , selectivity , chemistry , yield (engineering) , nuclear chemistry , molar ratio , ethanol , organic chemistry , materials science , metallurgy
Glycol ethyl ethers possess many excellent properties and are widely used in paint industry, chemical industry and so on. In this paper, glycol ethyl ethers were synthesized from glycol with the modified HZSM-5 as catalyst. The modified HZSM-5 was characterized by XRD, SEM, EDS, BET and NH 3 -TPD. The results showed that the modification did not change the structure and morphology of HZSM-5, sulfur was adsorbed on the surface of catalyst and strong acid sites appeared. The influence of ratio of the reactants, reaction temperature, reaction pressure, and time on the yield and selectivity was studied. The optimal reaction condition was performed with the molar ratio of glycol and ethanol 1:4 under 7MPa pressure at 453K for 4 h. Under these conditions, the conversion of glycol was 68.12%, and the selectivity of glycol ethers could be up to 98.61%.