Resumo

ALARCON, Edwin; VILLA, Aída Luz  e  MONTES DE CORREA, Consuelo. Effect of Sn-MCM-41 hydrothermal synthesis conditions on nopol production. Rev.fac.ing.univ. Antioquia [online]. 2009, n.49, pp.19-29. ISSN 0120-6230.

Several catalysts were prepared by hydrothermal synthesis of Sn-MCM-41 at room temperature using SnCl₂•2H₂O as precursor salt. Catalysts were characterized by TPD of ammonia, FTIR of adsorbed pyridine and TPR of H₂. The reactivity of the synthesized materials for the Prins condensation of β-pinene with paraformaldehyde to obtain nopol was explained in terms of the type of acidity. The most active catalysts showed medium strength acidity. Materials synthesized under pH control and by adding the metal source as a solid, exhibited medium strength acidity.

Palavras-chave : Sn-MCM-41; nopol; β-pinene; Prins Reaction; SnCl₂; hydrothermal synthesis; TPDA.