Basic properties of potassium oxide supported on zeolite y studied by pyrrole-tpd and catalytic conversion of methylbutynol

AUTOR(ES)

Nuttinee, Supamathanon, Jatuporn, Wittayakun, Sanchai, Prayoonpokarach, Wojciech, Supronowicz, Frank, Roessner

FONTE

Quím. Nova

DATA DE PUBLICAÇÃO

2012

RESUMO

ABSTRACT We report on the basic properties of zeolite NaY and potassium supported on NaY (K/NaY) assessed by pyrrole-TPD and MBOH transformation. Pyrrole-TPD revealed that impregnation of zeolite NaY with potassium promoted additional adsorption sites for pyrrole compared to parent zeolite. For zeolite with various potassium loadings, pyrrole adsorbed on K/NaY decreased with increased potassium loading. Reduction in pyrrole adsorption could be due to potassium hindering intrinsic basic sites (lattice oxygen), to oxide of potassium occluding in zeolite cavities restricting access for pyrrole, or to K2O reacting with pyrrole to form nondesorbed pyrrolate anions. On MBOH transformation, potassium almost completely suppressed NaY acid sites while K/NaY basicity increased with potassium loading.

Documentos Relacionados

• Catalytic Removal of Toluene from Air Streams by Cobalt Oxide Supported on Sepiolite
• Characterization and catalytic performance of potassium loaded on rice husk silica and zeolite nay for transesterification of jatropha seed oil
• Effect of tungsten doping on catalytic properties of niobium oxide
• Preparation and Anti-Corrosive Properties of Cerium Oxide Conversion Coatings on Steel X52
• Effect of iron content on the catalytic properties of activated carbon-supported magnetite derived from biomass