Schedule 9 3:15 PM - 3:30 PM [A1講演 1E16] Effect of the pretreatment of Ti2O3 on its catalytic activity for acetalization 〇Futoshi Tanaka1, Masanori Nagao1, Asako Iwamoto1, Ryoichi Otomo1, Yuichi Kamiya1 (1. Hokkaido Univ.)