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Home All issues Volume 71 / No 2 (March–April 2016) Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 71 2 (2016) 25 Full HTML
Dossier: Special Issue in Tribute to Yves Chauvin
Open Access

Table 1

Textural and physical properties of HPW and HSiW hybrid materials

Catalysts wt% W d100(a) (Å) a0(b) (Å) SBET (m2/g) Wall thickness (c) (Å) Vp(d) (cm3/g) Vμ(e) (cm3/g) Dp(f) (Å) CBET(g)
SBA-15 - 98 113 834 37 1.10 0.05 76 161
HPW/SBA-15 24.6 97 112 452 34 0.60 0.04 77 241
HPW@SBA-15 27.7 95 109 368 34 0.48 0.04 75 333
HSiW/SBA-15 24.7 97 112 503 35 0.65 0.04 77 266
HSiW@SBA-15 22.6 101 116 392 41 0.70 0.02 75 138
a

d(100) spacing (estimated error 3 Å).

b

a0 = 2d(100)/√3, hexagonal lattice parameter calculated from XRD, estimated error 4 Å.

c

Calculated by a0 – pore size.

d

Total pore volume at P/P0 = 0.980.

e

Micropore volume determined using the t-plot method.

f

Pore size from desorption branch applying the BJH pore analysis.

g

Derived from the BET equation of the nitrogen adsorption isotherms.

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