Abstract
The decomposition of polyethylene over supported rhodium films was investigated using FT-i.r. as an analytical probe. The process was observed to occur at relatively low temperature (190°C) and hydrogen pressure (13–53 kPa). The products detected by i.r. were methane and gaseous lower hydrocarbons. The active catalyst is believed to be Rh metal, rather than the RhCl 3 salt. Larger yields of methane were obtained when Rh/Al 2O 3 was the catalyst than for Rh/TiO 2, in contrast to observations for hydrogenation of carbon dioxide. The work demonstrates the utility of FT-i.r. for in situ investigations of polymer decomposition processes.
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