ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
1/1
0/0

Hierarchical Micro-/Macroporous TS-1 Zeolite Epoxidation Catalyst Prepared by Steam Assisted Crystallization

preprint
submitted on 05.07.2019 and posted on 08.07.2019 by Valentin Smeets, Eric M. Gaigneaux, Damien Debecker

Mesoporous Ti–SiO2 nanoparticles were prepared under alkaline conditions in the presence of a surfactant and were subsequently converted into a hierarchical micro-/macroporous TS-1 zeolite with large crystal size using steam assisted crystallization. In this procedure, the precursor nanoparticles were used both as macroporous hard template and as Si and Ti sources. The secondary macroporosity is a reminiscence of the nanoparticles which undergo dissolution and recrystallization upon steaming. The obtained catalyst has structural properties comparable to benchmark TS-1. We show that the successful conversion of the amorphous material into a fully crystalline catalyst stands for its excellent catalytic performance in aqueous media. Besides, the combination of large crystal size with a hierarchical pore structure ensures easy catalyst handling and processing without compromising on the catalytic activity.

History

Email Address of Submitting Author

damien.debecker@uclouvain.be

Institution

UCLouvain

Country

Belgium

ORCID For Submitting Author

0000-0001-6500-2996

Declaration of Conflict of Interest

No conflict of interest

Exports