Fabrication and application of mesoporous TiO2 film coated on Al wire by sol-gel method with EISA

Abstract

Mesoporous TiO2 film on Al wire was fabricated by sol-gel method with evaporation induced self assembly (EISA) process using F127 as templating agent in the mixed solution of ethanol and Tetra-n-butyl Titanate. The Ni/TiO2 film catalyst supported on Al wire was prepared by impregnation and the catalytic performance on methanation was carried out in a titanium alloy micro-reactor tube. It was shown that anatase mesoporous TiO2 film was prepared in this conditions (1g F127,calcined at 400°C and aged for 24h), which has specific surface area of 127m2g−1 and narrow pore size distribution of 5.3nm. Low calcined temperature (300°C) cannot transfer film to anatase and decompose F127 completely. Ni/TiO2 film on Al wire catalyst was proved to be active in CO methanation reaction. And the CO conversion reaches 99% and CH4 selectivity close is to 80% when the reaction temperature is higher 360°C.