Dandelion-Like Microspherical MCM-22 Zeolite Using BP 2000 as a Hard Template.

ABSTRACT: The chemistry between layered MWW zeolite and carbon black pearls (BP 2000) as an inexpensive hard template was investigated to develop a rational one-pot synthesis of MCM-22 microspheres. The characterization results showed that the insertion of BP 2000 in the gel synthesis did not substantially compromise the crystallinity and microporosity, and the microscopic analyses showed that BP 2000 played a key role in controlling the final morphology of the MCM-22 zeolite, creating beautiful dandelion-like microspherical particles. The morphology obtained is due to the tortuous shape of the hard template, the particular MWW particle crystals, the interaction with the external surface of the MWW zeolitic precursor, and the synthesis conditions. The stacking of MWW crystals with edge-to-face orien

SUBMITTER: Schwanke A 

PROVIDER: S-EPMC6026837 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature