Hierarchical Beta Zeolites As Catalysts in α-Pinene Oxide Isomerization

Hierarchical cobalt iron oxide nanoarrays as structured catalysts.

Large-scale arrays of hierarchical cobalt iron oxide nanowires with preferentially exposed reactive crystal planes have been fabricated for use as structured catalysts, which showed high catalytic activity and excellent cycling stability.

Tin-containing zeolites are highly active catalysts for the isomerization of glucose in water.

The isomerization of glucose into fructose is a large-scale reaction for the production of high-fructose corn syrup (HFCS; reaction performed by enzyme catalysts) and recently is being considered as an intermediate step in the possible route of biomass to fuels and chemicals. Here, it is shown that a large-pore zeolite that contains tin (Sn-Beta) is able to isomerize glucose to fructose in aque...

Pd–Zeolites as Heterogeneous Catalysts in Heck Chemistry

Heck reactions were performed with 4-bromoacetophenone and n-butyl acrylate, yielding the trans-arylated acrylate ester with high selectivity. Pd–zeolite catalysts were compared with supported Pd metal catalysts. In order to obtain an active and heterogeneous catalyst, the preformed or in situ-formed catalytically active Pd0 species and the PdII intermediates must be sufficiently stabilized on ...

Heteroatom-Substituted Delaminated Zeolites as Solid Lewis-Acid Catalysts

Catalytic Isomerization of Dihydroxyacetone to Lactic Acid and Alkyl Lactates over Hierarchical Zeolites Containing Tin

Hierarchical zeolites containing tin were obtained, characterized and used in a reaction of catalytic isomerization of dihydroxyacetone (DHA) to lactic acid and alkyl lactates. These catalysts are characterized by preserved crystallinity and primary microporosity with the simultaneous existence of secondary porosity regarding mesopores, which facilitates access of large molecules of reagents to...