Using Immobilized Ru Hydride Complexes to Understand the Interaction of Molecular Heterogeneous Catalysts with the Pore Walls under Catalytic Conditions (C07*)

分子多相催化剂(B1-3)常因表面塌陷(与孔壁相互作用)而导致活性低下和失活。在这里，我们提出了一种在催化条件下检测表面塌陷的方法。我们将在Lewis酸性介孔材料(A4-6)中固定化Ru配合物。由于Lewis酸改变了催化剂在CO2加氢中的选择性，产物分布直接反映了表面塌陷量(当络合物接近Lewis酸时)。这一点将通过使用先进的分光镜(C1和S1)得到证实。

Molecular heterogeneous catalysts (B1-3) often suffer from low activity and deactivation due to surface collapse (interaction with the pore wall). Here, we present a method for detecting surface collapse under catalytic conditions. We will immobilize ruthenium complexes inside of Lewis acidic mesoporous materials (A4-6). Since Lewis acids change the selectivity of ruthenium hydride catalysts in CO2 hydrogenation, the product distribution is a direct probe of the amount of surface collapse (when the complex is close to the Lewis acids). This will be corroborated through the use of advanced spectroscopies (C1 and S1).