Provided is a catalyst component for producing a polyolefin, which catalyst component comprises a metallocene catalyst having a structure according to formula (I): (THI)2R"MQp, wherein each THI is a tetrahydroindenyl derivative which may be substituted or unsubstituted, provided that at least one of the tetrahydroindenyl derivatives is substituted at the 2-position or the 4-position; R" is a structural bridge to impart stereorigidity between the two THI groups; M is a metal from Group IIIB, IVB, VB or VIB; Q is a hydrocarbyl group having from 1-20 carbon atoms, or a halogen; and p is the valence of M minus 2.

 
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> Process for removal of alkynes and/or dienes from an olefin stream

> Method and apparatus for controlling effluent composition in oxygenates to olefins conversion
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