Metallocene supported catalyst and method for preparing olefine polymer using the same

A metallocene supported catalyst comprising:

• a silica support comprising pores;
• a transition metal compound supported on the silica support;
• and
• nanosilica disposed on a surface of the silica support and has a mean particle size of 10 nm to 100 nm, wherein the mean particle size of the nanosilica is determined by a particle size at a point where a number-based cumulative distribution of particles according to a particle size reaches 50% when a particle size distribution is measured by a laser diffraction analysis, wherein a mean pore size of the pores in the silica support is smaller than the mean particle size of the nanosilica,
• wherein the transition metal compound is represented by the following Chemical Formula 1:
• in Chemical Formula 1,
• A is carbon, silicon, or germanium,
• X1 and X2 are each independently halogen,
• R1 and R2 are each independently C6-20 aryl unsubstituted or substituted with C1-20 alkyl,
• R2 to R4 and R6 to R8 are each independently hydrogen, halogen, C1-20 alkyl, C2-20 alkenyl, C1-20 alkylsilyl, C1-20 silylalkyl, C1-20 alkoxysilyl, C1-20 ether, C1-20 silylether, C1-20 alkoxy, C6-20 aryl, C7-20 alkylaryl, or C7-20 arylalkyl, and
• R9 and R10 are, the same as each other, C1-20 alkyl.