Metallosilicates containing manganese or iron group metals were prepared using a rapid crystallization method. The acidities of these metallosilicates and catalytic activities for the conversion of light olefins to gasoline fraction were investigated. The acidity and catalytic activity of the synthesized Mn-silicate did not depend on the manganese content. In contrast, the acid strengths and catalytic activities of metallosilicates containing iron group metals (iron-group-silicates) depended on the content and type of iron group metal. The acidity of the irongroup- silicates increased in the following order: Co-silicate&lt
Fe-silicate&lt
Ni-silicate. The selectivity for light paraffins and aromatic hydrocarbons over iron-group-silicates in conversion of light olefins increased in the same order. Consequently, Co-silicate had the lowest selectivity for aromatic hydrocarbons among all the iron-group-silicates for the conversion of light olefins into gasoline fraction.