%0 Conference Proceedings %T Effect of Halocarbon as Promoter on Activity of Ziegler-Natta Catalyst in 1-Hexene Polymerization %A Mazaherian, Maliheh %A Dashti, Ali %A Mohamad Mahdi Mortazavi %A Saied Ahmadjo %J The 9 th International Chemical Engineering Congress & Exhibition (IChEC 2015) %D 2015