Yibin Luo

Metal-modified MFI zeolite for enhancing propylene selectivity in FCC process

In this work, we investigate the effect of metal-modified MFI structure zeolite on propylene production, and discuss the mechanism of its enhancing propylene selectivity. The Metal-modified MFI zeolite samples were characterized by HRTEM, EDS, and XPS.

Hollow Titanium Silicalite Zeolite: From Fundamental Research to Commercial Application in Environmental-Friendly Catalytic Oxidation Processes

The systematical investigation on the synthesis, characterization, formation mecha‐ nism, and catalytic application of hollow titanium silicalite (HTS) zeolite has been reviewed. HTS is prepared through a “dissolution–recrystallization” post-treatment in the presence of template under hydrothermal conditions. Compared with TS-1, HTS is of unique hollow voids and with high framework Ti content, which significantly increase the mass diffusion and the amount of active sites, respectively. Thus, HTS zeolite displays high catalytic activity and stability in many oxidation processes with H2O2 oxidant, that is, cyclohexanone ammoximation, phenol hydroxylation, propy‐ lene epoxidation, Baeyer-Villiger oxidation of cyclohexanone, and selective oxidation of aromatics and cycloalkanes. The former three ones have been commercialized and run smoothly, which have promising economic and environmental significance.