Beta Zeolite as a Catalyst for the Preparation of Alkyl Glucoside Surfactants: The Role of Crystal Size and Hydrophobicity

Zeolites as Catalysts for the Synthesis of Fine Chemicals

“…This fact has also been observed by other authors in the glucosidation with 1-butanol in the presence of HY zeolites [99]. Optimization of Beta zeolite crystal size showed that the effectiveness is maximum for samples with a crystallite size ≤0.35 µm, indicating that in this range of crystal sizes the diffusion of the reactants through the micropores is not controlling the reaction [100]. Owing to the different polarities of both reactants (glucose and butanol), the adsorption/desorption properties of the Beta zeolite play an important role on the catalytic activity.…”

Metal–Organic Frameworks: Opportunities for Catalysis

“…It is indeed well known that structural defects play a major role in catalysis, especially for zeolites. [115] We have observed that structural defects in MOF-5 arising from water sensitivity generate acid sites which can carry out aromatic alkylkation. [116] The building-block approach to MOF construction makes it possible to regard such materials as extended molecules, though they are essentially solids.…”

Microporous and Mesoporous Catalysts for the Transformation of Carbohydrates

“…a Data from Camblor et al [43] Yields after 4 h of reaction at 383 K, n-butanol/D-glucose molar ratio ¼ 40, 3 wt % catalyst. from those observed with zeolites for similar operating conditions.…”

“…A more complete study was then carried out in the same research group over HBeta zeolites. [43] In particular, the influence of the crystal size and of the hydrophobic versus hydrophilic properties of the catalysts on the initial reaction rate and product distribution was examined.…”