WANG Haiyong, LÜ Hui, LIN Chen, et al. Application of supported alkali catalysts in Prins reaction[J]. CIESC Journal, 2015, (10): 3911-3918.DOI: 10.11949/j.issn.0438-1157.20150187.
n=1 or 2) prepared by impregnation method and C-Cs2O/Al2O3 by co-precipitation method were applied in Prins reaction. Their base amount and pKa in water were determined. The structure and physico-chemical properties of the carrier and prepared catalysts were characterized by CO2-TPD
X-ray diffraction
and nitrogen adsorption. The performance of catalysts was evaluated by condensation reaction of isobutene with paraformaldehyde to produce 3-methyl-3-buten-1-ol. The results showed that the performance of catalysts related directly with their basic property and structure. The C-Cs2O/Al2O3 catalyst had stronger basicity and showed superior catalytic performance
and the conversion of formaldehyde and selectivity to MBO reached up to 100.0% and 86.0% respectively. The mechanism of Prins reaction over solid base catalyst was also discussed. The base sites could active the a-H of isobutene