Abstract
Abstract Al–Ti catalysts prepared by self-assembly method (DI-20Al–Ti), sol–gel method (SG-20Al–Ti) and impregnation method (IM-20Al/Ti) were studied for the removal of HCN. Compared with IM-20Al/Ti, the catalysts DI-20Al–Ti and SG-20Al–Ti exhibited high surface area, well-dispersed pore, and significant (001) plane of the anatase phase. Mechanistic analysis suggested that HCN was converted to N2 via the generated OH on the (001) plane exposed of the anatase phase. Moreover, DI-20Al–Ti possessed strong basic sites and a proper ratio of TiO2 anatase and TiO2 rutile. These comprehensive characteristics enabled the catalyst prepared by self-assembly method to achieve high activity with a HCN removal efficiency of 100% at 250 °C.
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