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Updated: Jul 8, 2025

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
Investigations of the ADOR Process Using Solid-State NMR Spectroscopy
Cameron M Rice1, Olivia J Dovernor1, Russell E Morris1
1School of Chemistry, EaStCHEM and Centre of Magnetic Resonance, University of St Andrews, Purdie Building, St Andrews KY16 9ST, U.K.
The study reveals the complex dynamics of zeolite UTL transformation using water. The assembly-disassembly-organization-reassembly (ADOR) process involves both permanent structural changes and temporary bond changes, making the mechanism more intricate than previously thought.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Catalysis
Background:
- Zeolites are crucial microporous materials with diverse applications.
- The assembly-disassembly-organization-reassembly (ADOR) process is a method for zeolite structural modification.
- Understanding the ADOR mechanism is key to designing novel zeolite structures.
Purpose of the Study:
- To investigate the mechanism of zeolite UTL transformation via the ADOR process using water.
- To elucidate the dynamic structural changes occurring during the ADOR reaction.
Main Methods:
- Utilized 29Si and 17O solid-state Nuclear Magnetic Resonance (NMR) spectroscopy.
- Analyzed intermediate materials formed during the water-mediated ADOR process.
Main Results:
- Identified highly dynamic intermediate materials during the ADOR reaction.
- Observed both irreversible structural changes defining the pathway and reversible Si-O-Si linkage lability.
- The reversible changes do not impact the overall zeolite structure.
Conclusions:
- The ADOR mechanism for zeolite UTL transformation is more complex than initially proposed.
- The process involves a combination of irreversible and reversible structural dynamics.
- NMR spectroscopy provides critical insights into dynamic zeolite transformations.
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