Process optimization on reaction between 3-mercaptopropyl trimethoxysilane (MPTMS) and mesoporous silica using response surface methodology

Hang Xu, Yu, Mei Li
2013 Journal of Chemical and Pharmaceutical Research   unpublished
3-Mercaptopropyl Trimethoxysilane (MPTMS) is a common silane coupling agent and can fix ionic liquid on supporter in supported ionic liquid catalyst field. In this study, response surface methodology was used to design and optimize the reaction conditons which were MPTMS dosage, reaction time and temperature for the best MPTMS loading amount (S content). The optimum experimental conditions are MPTMS 1.43 g, time 31 h and temperature 391 K. The predicted S content is 0.95 mmol/g and the
more » ... tal is 0.91 mmol/g. The thickness of MPTMS layer is about 0.55 nm in SiO 2 pore.