Surface composition and morphology of polyimidesiloxane copolymers with short polydimethylsiloxane segments studied by electron spectroscopy for chemical analysis and time-of-flight secondary ion mass spectrometry

1998 ◽  
Vol 16 (5) ◽  
pp. 3046-3051 ◽  
Author(s):  
Jin Zhao ◽  
Sergio R. Rojstaczer ◽  
Joseph A. Gardella
Keyword(s):  
Mass Spectrometry ◽  
Chemical Analysis ◽  
Electron Spectroscopy ◽  
Secondary Ion Mass Spectrometry ◽  
Surface Composition ◽  
Time Of Flight ◽  
Ion Mass Spectrometry ◽  
Secondary Ion

scholarly journals ToF-SIMS studies of the surface of Pd/ZrO2-TiO2 catalyst used in the hydrodechlorination process

2007 ◽  
Vol 9 (3) ◽  
pp. 81-85 ◽  
Author(s):  
Jacek Grams ◽  
Jacek Góralski ◽  
Joanna Kleczewska ◽  
Bożena Szczepaniak ◽  
Tadeusz Paryjczak
Keyword(s):  
Mass Spectrometry ◽  
Secondary Ion Mass Spectrometry ◽  
Surface Composition ◽  
Time Of Flight ◽  
Tio2 Catalyst ◽  
Tof Sims ◽  
Ion Mass Spectrometry ◽  
Secondary Ion

ToF-SIMS studies of the surface of Pd/ZrO2-TiO2 catalyst used in the hydrodechlorination process Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was used in order to obtain the information about the surface composition of Pd/ZrO2-TiO2 catalyst and to estimate the changes in the concentration of particular components on its surface during the hydrodechlorination of CCl4. The results demonstrated that the hydrodechlorination process led to the increase in the concentration of chlorine and the drop in the amount of surface accessible palladium, while the quantity of Pd-Cl bounds did not change considerably. It suggested that the presence of ZrO2 protected the surface of the studied catalyst against the formation of PdCl2.

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