Mesopores in USY Zeolites

Hierarchical Y and USY zeolites designed by post - synthetic strategies

Mesopore Formation in USY and Beta Zeolites by Base Leaching: Selection Criteria and Optimization of Pore-Directing Agents

Enhancement in the catalytic activity of Pd/USY in the heck reaction induced by H2 bubbling.

Pd was loaded on ultra stable Y (USY) zeolites prepared by steaming NH(4)-Y zeolite under different conditions. Heck reactions were carried out over the prepared Pd/USY. We found that H₂ bubbling was effective in improving not only the catalytic activity of Pd/USY, but also that of other supported Pd catalysts and Pd(OAc)₂. Moreover, the catalytic activity of Pd/USY could be optimized by choosi...

Medical Carbons - Need for Mesopores

Introduction At present medical activated carbons (AC) are used as oral adsorbents and for haemoperfusion mostly in acute poisoning with small molecular weight toxins. Respectively, the efforts to make an efficient medical activated carbon are aimed at developing its microporous structure. Potential for therapeutic use of activated carbon with larger pores – mesopores is almost completely overl...

An in situ Al K-edge XAS investigation of the local environment of H+- and Cu+-exchanged USY and ZSM-5 zeolites.

Aluminum coordination in the framework of USY and ZSM-5 zeolites containing charge-compensating cations (NH4+, H+, or Cu+) was investigated by Al K-edge EXAFS and XANES. This work was performed using a newly developed in-situ cell designed especially for acquiring soft X-ray absorption data. Both tetrahedrally and octahedrally coordinated Al were observed for hydrated H-USY and H-ZSM-5, in good...