Abstract
It was demonstrated that polymeric carbon formed during the preparation of Mo 2C/SiO 2 from MoO 3/SiO 2, which is located on the support. The adsorptions of CO and CH 3 on silica-supported MoO 3 and Mo 2C catalysts was investigated by FTIR. While CO did not adsorb strongly on MoO 3/SiO 2, stable bands at 2089 and 2032 cm −1 on Mo 2C/SiO 2 were detected in CO adsorption, which can be regarded as an indication for noble metal-like character of supported Mo 2C. CH 3(a) on MoO 3/SiO 2 (2920 cm −1) proved to be more stable, than CH 3(a) on Mo 2C/SiO 2 (2924 cm −1). In the surface reaction of CH 3(a) on Mo 2C supported on silica ethylene formation was detected by mass spectrometric analysis. Ethylene did not form on SiO 2 and on MoO 3/SiO 2.
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