CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, AND CATALYST FOR OLEFIN POLYMERIZATION AND PROCESS FOR PRODUCING OLEFIN (CO)POLYMER USING SAME

Provided are a catalyst component for olefin polymerization which is highly active, an olefin polymerization catalyst, and a process for producing an olefin (co)polymer using the catalyst. The catalyst component for olefin polymerization is characterized by comprising an ion-exchanged phyllosilicate having the following property 1 and preferably further having the following property 2, etc. Property 1: in a pore distribution curve calculated by the BJH analysis method using an adsorption isotherm determined by a nitrogen adsorption method, the sum of the volumes of pores each having a diameter of 2-10 nm accounts for 60-100% of the total volume of mesopores. Property 2: in X-ray diffractometry (XRD), the ion-exchanged phyllosilicate gives a diffraction pattern which has a peak (m) at a 2¸ of 19.6-20.0 degrees, and when the peak (m) has a peak intensity (M), there is no peak (i) other than the peak (m) in a 2¸ of 15-25 degrees or there is a peak (i) in the 2¸ of 15-25 degrees, the peak (i) having a peak intensity (I) that satisfies the relationship 0