Interaction of hydrogen chloride with a molybdena–silica catalyst

摘要: The interaction of HCl with a molybdena–silica catalyst has been investigated using e.p.r. and infrared spectroscopy. Exposure reduced catalysts to at room temperature causes large (up 20-fold) increase in the amount MoV detected by which is reversed on subsequent outgassing. accompanying changes g- 95Mo hyperfine-tensor components indicate that chloride ions replace oxide coordination sphere MoV, spin concentration attributed substitution bridging ligands between magnetically coupled ions. Oxidized are exposure HCl. reaction compared previously reported molybdena–alumina catalysts.