Hydrodechlorination of (CH3)3SiCHCl2 over Pd, Ni, Co and Fe supported on AlF3

Abstract

Gas phase hydrodechlorination (HDC) process of Me3SiCHCl 2 was studied in a flow reactor at 200 ∘C using a 2% metal loading (w/w) of four different monometallic catalysts (Pd/AlF 3, Ni/AlF 3,Co/AlF 3 and Fe/AlF 3). The catalysts were prepared by sol-gel method and structurally examined by BET method, FT-IR and XPS techniques. The XPS technique showed that Ni II, Fe III and Co III exist as oxides. The major products in the HDC process of Me 3SiCHCl 2 were identified by GC and GC-MS and found to include Me 3SiCH 2Cl, Me 3SiCl, and Me 4Si. The effect of these catalysts on the quantitative conversion, selectivity and conversion rates are reported. Gas phase hydrodechlorination process of Me3SiCHCl2 was studied in a flow reactor at 200°C using a 2% metal loading (w/w) of four different monometallic catalysts (Pd/AlF3, Ni/AlF3, Co/AlF3 and Fe/AlF3). The XPS technique showed that NiII, FeIII and CoIII exist as oxides. The major products in the process of Me3SiCHCl2 were identified to include Me3SiCH2Cl, Me3SiCl, and Me4Si