Longo Alessandro, Balerna Antonella, d'Acapito Francesco, D'Anca Fabio, Giannici Francesco, Liotta Leonarda F, Pantaleo Giuseppe, Martorana Antonino
ISMN-CNR, Via Ugo La Malfa 153, 90146 Palermo, Italy.
J Synchrotron Radiat. 2005 Jul;12(Pt 4):499-505. doi: 10.1107/S090904950501143X. Epub 2005 Jun 15.
An in situ cell for reductive and oxidative treatments at different temperatures that allows the possibility of recording data as a function of temperature has been designed and constructed for X-ray absorption experiments at the GILDA beamline BM08 of ESRF. The cell is linked to a mass quadrupole spectrometer providing control of the reaction gases and monitoring of the products. The apparatus allows measurements to be performed both in transmission and fluorescence geometry. The cell was tested by studying the CO oxidation reaction promoted by a Pt/ceria-zirconia-supported catalyst. The CO(2) yield is correlated with the structural results confirming the existence of a strong metal-support interaction between the Pt metal clusters and the ceria-zirconia support.
已设计并制造了一种用于在不同温度下进行还原和氧化处理的原位池，该原位池能够记录作为温度函数的数据，用于欧洲同步辐射装置（ESRF）的GILDA光束线BM08上的X射线吸收实验。该池与一个质量四极杆光谱仪相连，可控制反应气体并监测产物。该装置允许在透射和荧光几何构型下进行测量。通过研究由铂/二氧化铈-氧化锆负载催化剂促进的CO氧化反应对该池进行了测试。CO₂产率与结构结果相关，证实了铂金属簇与二氧化铈-氧化锆载体之间存在强金属-载体相互作用。
