Problem 2: You want to produce TiO2 nanoparticles with a TiCl4-fed flame reactor. The burning flame has a measured temperature of 2000C. a) Assuming that you want to produce particles with a diameter of 100 nm, what partial pressure of TiO2 molecules in the vapour phase is required? b) What if you want to produce particles of 10 nm? c) After making the 100nm particles, you characterize them in BET and discover that they have an SSA of 0.5m/g. What does this suggest about the actual particle size produced? pTiO2 = 4.23 g cm- Surface energy of TiO2 = 1.70 J m- VA_TiO = 34 Useful formula (Antoine equation): Pvap,Tio2[atm] = T[C] 1843 1129 1129