Dynamic evolution of Al species in the hydrothermal dealumination process of CHA zeolites
Benhan Fan, Dali Zhu, Linying Wang, Shutao Xu, Yingxu Wei, Zhongmin Liu
Abstract
The dynamic evolution of Al species in the hydrothermal dealumination process of CHA zeolite was investigated by multiple solid-state NMR methods. Two types of Al–OH species were clearly distinguished by 1 H– 1 H DQ-SQ MAS NMR.
Topics & Concepts
Hydrothermal circulationZeoliteProcess (computing)Solid-state nuclear magnetic resonanceChemical engineeringChemistryMaterials scienceCatalysisNuclear magnetic resonanceOrganic chemistryPhysicsComputer scienceEngineeringOperating systemZeolite Catalysis and SynthesisAdvanced NMR Techniques and ApplicationsChemical Synthesis and Characterization