%0 Journal Article %A Taniike, Toshiaki %A Chammingkwan, Patchanee %A Thang, Vu Q. %A Goto, Keisuke %A Fujitani, Tadahiro %A Terano, Minoru %D 2017 %T Chemisorption-Induced Activation of MgCl2 Film as Realistic Route for Heterogeneous Ziegler–Natta Surfaces under Ultrahigh Vacuum %U https://acs.figshare.com/articles/journal_contribution/Chemisorption-Induced_Activation_of_MgCl_sub_2_sub_Film_as_Realistic_Route_for_Heterogeneous_Ziegler_Natta_Surfaces_under_Ultrahigh_Vacuum/5527300 %R 10.1021/acs.jpcc.7b08242.s001 %2 https://acs.figshare.com/ndownloader/files/9570253 %K Lewis base %K low-energy electron diffraction %K MgCl 2 film %K ZN %K MgCl 2 films %K MgCl 2 Film %K powder catalyst preparation %X The preparation of model Ziegler–Natta (ZN) surfaces under ultrahigh vacuum necessitates the activation of MgCl2 films deposited on a substrate, since these films unexceptionally expose the energetically most stable but catalytically inactive (001) face. Here, we present a method to activate MgCl2 films with the inactive (001) termination, which was based on the chemisorption of a Lewis base in an analogous way to industrial powder catalyst preparation. We found that a (001)-terminated MgCl2 film on Cu(110) was activated into a MgCl2·Lewis base adduct when exposed to a pyridine vapor at a nearly saturated vapor pressure. A dynamic response of the MgCl2 film to the chemisorption and desorption of a Lewis base was uncovered using low-energy electron diffraction and temperature-programmed desorption. %I ACS Publications