Ultrastable Au Nanocatalyst Supported on Surface-Modified TiO_2 Nanocrystals

摘要

Supported Au nanocatalysts have very high activities in some important industrial reactions,including oxidation of CO and hydrocarbons,water-gas-shift (WGS) reaction,H_2O_2 production from H_2 and O_2,removal of CO from hydrogen steams,and selective epoxidation.Most of these reactions are currently catalyzed by platinum-group metals.Because of the relatively lower cost and greater availability of gold compared to those of the platinum-group metals,supported Au nanocatalysts could potentially replace expensive platinum-group metal catalysts in such reactions.