Different dispersions of group II catalysts over SBA-15 and MCM-41: Effects on transesterification reactivity

作者：Sullivan James A^*; Sherry Linda

来源：Catalysis Communications, 2015, 60: 88-91.

DOI：10.1016/j.catcom.2014.11.016

• Mesoporous SiO2
• Catalyst characterisation
• Transesterification

Activities of CaO catalysts on SBA-15 and MCM-41 have been compared in transesterification and SBA-15 supported samples are invariably more active than those on MCM-41. Increated activity is not due to diffusional effects (as measured using substrates of differing size), but rather to increased dispersion of CaO on SBA-15 (as measured using NOx TPD). The effect, i.e. increased reactivity of SBA-15 supported catalysts being related to increased dispersion, is also noted in supported BaO catalysts while supported MgCO3 catalysts show little variation in dispersion (or in reactivity) as a function of the support used.

• 出版日期2015-2-5