TEM,FTIR and XRD techniques are used to investigate the structure of HPWA-SBA-15.The results show that pores of HPWA-SBA-15 have regular two-dimensional hexagonal structure,and HPWA disperses well in the pore or pore wall of HPWA-SBA-15.NH3-TPD shows the HPWA-SBA-15 catalyst has acidic properties.ETBE is synthesized by the etherification reaction of alcohol and tert-butyl alcohol over several catalysts.Solid acid catalyst HPWA-SBA-15 is the appropriate catalyst which has the highest yield of ETBE than PW12/C and cation resin.The influences of reaction temperature,ratio of alcohol to tert-butyl alcohol are studied.At optimal operation condition, 30% HPWA on HPWA-SBA-15,reaction temperature 100℃,alcohol/tert-butyl alcohol molar ratio 2,the quality catalyst 0.9g and raw material 10g,the yield of ETBE is 59.55% and the selectivity is 90.2%.
