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. 2022 Mar 14;2(3):762–776. doi: 10.1021/jacsau.2c00027

Table 1. Specific Surface Area and Surface VOx Density of Catalysts of This Study.

catalysts’ names containing nominal metal loading BET surface area of support before VOx deposition, m2/g51 final catalyst BET surface area, m2/g actual V loading in V2O5 equivalentsa, wt %10 actual Ti loading in TiO2 equivalentsa, wt %51 Ti/V atom. ratio surface density, V/nm2 a surface density, Ti/nm2
8% V2O5/SiO2 332 231 0 0   2.3 0
5% V2O5/1% TiO2/SiO2 305 263   1.05 0.23 1.3 0.3
5% V2O5/5% TiO2/SiO2 280 17410 3.80 6.58 1.1 1.9 1.8
5% V2O5/8% TiO2/SiO2 253 21110 4.74 9.38 1.8 1.6 2.9
5% V2O5/15% TiO2/SiO2 229 18910 4.51 15.71 3.4 1.8 4.9
5% V2O5/25% TiO2/SiO2   18910     5.7 1.8 n/a
5% V2O5/40% TiO2/SiO2   175     9.1 1.9 n/a
5% V2O5/50% TiO2/SiO2   142     11.4 2.3 n/a
5% V2O5/TiO2 50 48     21.6 6.9 n/a
a

Actual concentration determined by inductively coupled plasma (ICP) analysis, taken from refs (10, 51). n/a (not applicable) is indicated for samples with titania content higher than one monolayer.