Etherification of FCC Light Gasoline Over Ag-Loaded Zeolite β Catalyst

In a fixed-bed reactor, the etherification activity of Ag-loaded zeolite β catalyst was studied with FCC light gasoline. The effects of preparation conditions on the performance of catalyst and influences of temperature, pressure, methanol/tert-olefin molar ratio and space velocity on etherification were investigated over Ag-loaded zeolite β catalysts. The result shows that the activity of Ag-loaded catalyst slightly increases with the content of Ag increasing. When the mass fraction of Ag reachs 2%, the conversion of tert-olefins reachs the highest value, at which the activity of catalyst decreases when the content Ag continues to increase. The activity of catalyst gradually increases with the calcinations temperature rose, reaching its highest point at 450 ℃.Under the best reaction condition(temperaure:70 ℃, pressure:0.8 MPa, LHSV:1.0 h~(-1), MeHO and tert-olefins ratio:1.0), the highest conversion of tert-olefin could reach 56.27%. Ag-loaded zeolite β catalysts had advantages of good activity and uneasy deactivation.