The Preparation of Solid Superacid of Sulfated Tin Oxide with Acidity Higher Than Sulfated Zirconia

摘要

A highly active solid superacid of sulfated tin oxide was prepared from tin oxide gel which was precipitated from SnCl_4 solution and washed with aqueous ammonium acetate solution.The sulfated tin oxide showed activity much higher than the sulfated zirconia,a well known solid superacid,for the skeletal isomerization of n-pentane,and its acid strength estimated by temperature-programmed desorption using argon was also higher than that of the latter.