In situ formation of hydrides and carbides in palladium catalyst: When XANES is better than EXAFS and XRD

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• 作者：Aram L. Bugaev^a ; ^b ; ^{abugaev@sfedu.ru} ; Alexander A. Guda^a ; Andrea Lazzarini^b ; Kirill A. Lomachenko^a ; Elena Groppo^b ; Riccardo Pellegrini^c ; Andrea Piovano^d ; Hermann Emerich^e ; Alexander V. Soldatov^a ; Lusegen A. Bugaev^a ; Vladimir P. Dmitriev^a ; ^e ; Jeroen A. van Bokhoven^f ; ^g ; Carlo Lamberti^a ; ^h ; ^{carlo.lamberti@unito.it}
• 关键词：Palladium hydride ; Palladium carbide ; EXAFS ; XRPD ; XANES simulations ; Monte Carlo simulations
• 刊名：Catalysis Today
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：283
• 期：Complete
• 页码：119-126
• 全文大小：2638 K
• 卷排序：283

文摘

Reversible hydride phase observed in Pd/C catalysts with EXAFS and XRPD. Irreversible carbide phase observed in Pd/C catalysts with EXAFS and XRPD. EXAFS and XRPD hardly discriminate Pd-hydrate from Pd-carbide. XANES simulations easily discriminate Pd-hydrate from Pd-carbide. The active PdHx (or PdCy) phase can be determined in operando conditions.