Related Experiment Video
Updated: Jan 10, 2026
09:46
Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5
Published on: August 25, 2016
12.1K
Design and Synthesis of a Medium-Pore Aluminosilicate Zeolite SCM-53
Rui Li1, Guojun Zhou1, Shihui Feng2
1State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai, China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|November 29, 2025
Summary
Researchers developed a new, thermally stable zeolite, SCM-53, using sigma expansion. This novel material features a unique 2D channel system and shows promise for adsorption and catalysis applications.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Designing thermally stable zeolites is crucial for catalysis and adsorption.
- Creating open-framework zeolites via sigma expansion of condensed frameworks is challenging.
- Previous work focused on inverse sigma expansion, achieving condensed frameworks.
Purpose of the Study:
- To rationally design and synthesize a thermally stable, open-framework zeolite using sigma expansion.
- To explore the sigma expansion of condensed frameworks for novel zeolite structures.
- To investigate the structural and thermal properties of the new zeolite, SCM-53.
Main Methods:
- Theoretical prediction of SCM-53 framework via sigma expansion of SCM-51.
- Synthesis of SCM-53 from layered precursor SCM-50 using interlayer silylation and calcination.
- Structural characterization using powder X-ray diffraction (PXRD), scanning transmission electron microscopy (STEM), and nuclear magnetic resonance (NMR) spectroscopy.
- Porosity analysis via N2 absorption measurements.
Main Results:
- Successful synthesis of SCM-53, a medium-pore aluminosilicate zeolite.
- SCM-53 exhibits a 2D 10 × 10-ring channel system.
- Characterization confirmed accessible micropores (5.9 × 4.9 Å), ultrathin nanosheet morphology (∼15 nm), and high thermal stability (up to 800 °C).
Conclusions:
- Sigma expansion of condensed frameworks is a viable route to novel, thermally stable open-framework zeolites.
- SCM-53 demonstrates significant potential for adsorption and catalytic applications due to its unique structure and properties.
- The sigma expansion strategy offers a promising approach for targeted zeolite design.
