Abstract
The effect of silica-modification on MFI, MOR and BEA zeolite catalysts was studied in the liquid-phase catalytic degradation of polyethylene wax. Although their acidities and surface areas were not significantly altered with silica-modification, the degradation activities of poor catalysts were greatly enhanced due to the suppression of carbon deposit on the external surface. The catalytic activity and product composition on silica-modified zeolite catalysts supposed the selective inactivation of the external surface.
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