Roberto Fiorenza

3 Questions 8 Answers 0 Followers

Questions related from Roberto Fiorenza

Can a shift of XRD 1 0 1 Anatase peak reveal a substituion of Ti ions in the crystal lattice?

In particular I'm studying TiO2 doped with N, W and Hf systems. A slight shift to lower angle compared to the 25° degree of bare TiO2 can be due to substitution of Ti ions? Are there some...

10 October 2016 9,275 8 View

It is possible to find a correlation between a zeolite acidity and metal particles size, in a zeolite supported noble metal catalyst?

There are papers that consider this possible correlation? It is possible that a higher SiO2/Al2O3 ratio (lower acidity) favour the dispersion and the formation of bigger metal particles?

01 January 2016 8,044 5 View

What can be attributed to DTA exothermic peak of CeO2 at 230 °C?

I performed a TG-DTA measurements of cerium oxide prepared by precipitation from cerium nitrate and then calcinated at 450°C. The sample don't have significant weigt losses, but have a DTA...

12 December 2014 4,058 6 View