Straightforward Processing Route for the Fabrication of Robust Hierarchical Zeolite Structures.

ABSTRACT: Strong hierarchical porous zeolite structures are prepared by a sol-gel method using freeze gelation. Instead of conventional binders in powder form, such as bentonite or kaolin, it has been proven that using a freeze gelation method based on a colloidal silica sol is a more straightforward and easier-to-use-approach in fabricating highly mechanically stable zeolite monoliths. The resulting zeolite slurries possess superior rheological properties (not being pseudoplastic) and show low viscosities. This low viscosity of the slurry enables an increase in the solid content without compromising the extraordinary good flow behavior for casting applications. Additionally, in comparison to conventional powdery binders, zeolite samples prepared by using a colloidal silica sol exhibit a significant

SUBMITTER: Besser B 

PROVIDER: S-EPMC6645045 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature