Papers by Author: Qiu Ying Huang

Abstract: Dodecatungstophosphoric acid was synthesized and used as catalyst for oxidation of benzaldehyde to benzoic acid with aqueous hydrogen peroxide. The effect of various catalytic reaction parameters including time, temperatures, and the amount of catalyst on the yield of benzoic acid was investigated in details. The results indicated that the as-prepared sample was in the keggin-type structure and the optimal parameters under the reaction conditions were as follows: 0.5 g of catalyst, reacted at 80 C for 5 h.

Abstract: Ti-SBA-15 mesoporous materials with different Si/Ti molar ratios were synthesized via a hydrothermal process and characterized by using various techniques. The effect of Si/Ti molar ratios in the gels on the structure and catalytic efficiency in epoxidation of cyclohexene was discussed in details. The results showed that all the Ti-SBA-15 materials retained SBA-15 mesoporous structure and exhibited good catalytic activity. Furthermore,the sample prepared with Si/Ti =50 exhibited the best catalytic performance under the reaction conditions.

Abstract: BaTiO3 nanoparticles were synthesized by hydrothermal process at various temperatures for 8 h, starting from a mixture of Ti(OBu)4 + BaCl2. The structure analytic results showed that all the prepared powders are well crystallized. Meanwhile, the phase change ratio from metastable cubic to tetragonal phases increased with the increase of hydrothermal temperatures.