Affiliation:
1. USTB: University of Science and Technology Beijing
2. Institute of Process Engineering Chinese Academy of Sciences
Abstract
Abstract
In this contribution, the recovered TiO2 from waste Selective Catalytic Reduction (SCR) was transformed into a solid superacid catalyst (TiO2/SO42-) modified by sulfuric acid (H2SO4). The results of XRD suggest that the crystal structures of TiO2 are not destroyed during the recovery and sulfation processes. The recovered TiO2-modified superacid catalyst has a greater surface area (41.83 m2/g) than TiO2/SO42- catalysts produced from pure TiO2 reported by previous researchers. The Barrett-Joyner-Halenda (BJH) pore size distribution confirms that the samples are essentially mesoporous structures. The NH3-TPD analysis demonstrated that the formation of the superacid sites occurs at temperatures ranging between 400 and 500 °C. The prepared TiO2/SO42- solid superacid catalyst exhibits good catalytic activity with the conversion of n-butanol above 92 % in the transesterification of ethyl acetate and n-butanol.
Publisher
Research Square Platform LLC
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