Following the movement of Cu ions in a SSZ-13 zeolite during dehydration, reduction and adsorption: A combined in situ TP-XRD, XANES/DRIFTS study

• Published in: Journal of catalysis Vol. 314; pp. 83 - 93
• Main Authors: Kwak, Ja Hun, Varga, Tamás, Peden, Charles H.F., Gao, Feng, Hanson, Jonathan C., Szanyi, János
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 01.05.2014; Elsevier; Elsevier BV
• Subjects: Adsorption; Catalysis; Cation coordination; Cation movement; Chemistry; Cu-SSZ-13; Dehydration; DRIFTS; Exact sciences and technology; General and physical chemistry; Ion-exchange; Ions; NH3 SCR; Surface physical chemistry; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; XANES; XRD; Zeolites: preparations and properties; Cation movement; XANES; DRIFTS; Cation coordination; Cu-SSZ-13; NH3 SCR; XRD; XANES spectrometry; SCR; In situ; Ions; Zeolite; Dehydration; X ray diffraction; Chemical reduction; Infrared spectrometry; Ammonia; Heterogeneous catalysis; Adsorption; NH

[Display omitted] •Combination of XRD, XANES and DRIFTS affords monitoring the cation movement in a Cu-SSZ-13 zeolite.•Fully hydrated Cu2+ ions reside in the large cages of zeolite and weakly perturb framework T–O–T vibrations.•Upon dehydration copper ions move into cationic positions and perturb th...