Improvement of stability of out-layer MgAl<Subscript>2</Subscript>O<Subscript>4</Subscript> spinel for a Ni/MgAl<Subscript>2</Subscript>O<Subscript>4</Subscript>/Al<Subscript>2</Subscript>O<Subscript>3</Subscript> catalyst in dry reforming of methane

Abstract

TiO 2 nanoparticles were prepared by the hydrolysis of titanium tetraisopropoxide (TTIP) using TMA (tetramethylamine) as a peptizer in the hydrothermal method. The photocatalytic degradation of Orange II has been studied in a batch reactor under UV light. The particle size was similar to that from hydrothermal treatment at 120-170 o C, but it increased to 23 nm at 200 o C. The titania particles prepared at 170 o C and calcined at 600 o C showed the highest activity in the photocatalytic decomposition of Orange II.