The isobutane alkylation with butenes is a reaction in which the substitution of mineral acids, such as sulphuric and hydrofluoric acids, by solid acid catalysts is highly desirable. Solid catalysts with good activity and ...

The diffusion restrictions of the reactants caused by the micropores limit the use of zeolites for processing heavy molecules. This demands the development of materials that combine the properties of zeolites and mesoporous ...

The effect of mesostructuration of beta zeolite and of metal loading on the properties of cobalt-based catalysts for Fischer–Tropsch synthesis was studied in this work. The most active catalyst was the mesostructured beta ...

The zeolite Beta used in this work consists of nanosized crystallites (20-30 nm) aggregates, determined by HRTEM analysis. The influence of the zeolite structure and crystallite size on the desorption rates of linear ...

En el presente trabajo se reporta la evaluación catalítica de la zeolita beta con relación molar SiO₂/Al₂O₃ = 90 modificada con bario, así como los resultados de caracterización, por difracción de rayos-X, espectroscopias ...

In this paper zeolite Beta was synthesized and characterized by XRD, ATG, ATD, XRF and SEM. Subsequently various modifications were made using a surface passivation process in liquid phase with tetraethylorthosilicate ...