Rigid, non-porous and tunable hybrid p-aminobenzoate/TiO2 materials: Toward a fine structural determination of the immobilized RhCl(Ph3)3 complex

Espinas, Jeff; Rahal, Raed; Abou-Hamad, Edy; Eter, Mohamad El; Basset, Jean‐Marie

doi:10.1016/j.jorganchem.2014.12.032

Cited by 1 publication

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[7,9] In order to overcome the problem that the catalyst and the product are difficult to be separated in the homogeneous reaction, researchers have carried out some research on the solid-supported heterogeneous catalyst. Heterogeneous catalysts prepared from various supports such as a new type of TiO 2 hybrid material, [10] different nanostructured Al 2 O 3 -ZrO 2 mixed oxide, [11] SBA-15 zeolite, [12] etc., have been widely used in formylation. Mukhopadhyay K et al [13] encapsulated and fixed HRh(CO)(PPh 3 ) 3 in NaY microporous zeolites, and trapped Rh species through the pore structure of the zeolite to encapsulate the active species.…”

Section: Introductionmentioning

confidence: 99%

Effect of NaY Zeolite at Different Calcination Temperatures on the Activity in Hydroformylation of Formaldehyde

et al. 2022

View full text Add to dashboard Cite

The NaY zeolites were prepared by hydrothermal synthesis method. The influence of NaY zeolite calcined at different temperatures as carriers for Rh/NaY catalysts on the hydroformylation of formaldehyde was investigated. The physical and chemical properties of Rh/NaY catalysts and their performance were characterized in details. When the zeolites were calcined at 400-700 °C, the crystal structure and morphology were kept unchanged within this range of calcination temperature. However, the surface crystallinity and surface area were reduced with increasing the temperature due to the partially collapsed of its framework, and thus reducing the confine of cages structure to rhodium species promote its participation in the coordination reaction. The reduction in the amount of surface Lewis acid can reduce the electronegativity of the carrier and change the electronic state of the surface rhodium species, which would weaken the hindrance to anionic speciation and promote CO insertion, which facilitates the hydroformylation of formaldehyde.

show abstract