Table 1: Textural properties of the xerogela.

EntrySample /m2g−1 /cm3g−1 /nmFAAS (%)

1Pd(0)/SiO2/HF (as prepared)2540.005122.0
2Pd(0)/SiO2/HCl (as prepared)6340.0320.3
3Pd(0)/SiO2/HF (soxhlet)3280.0097
4Pd(0)/SiO2/HF (calcined)2250.00514

: specific area determined by BET method, : pore volume, and : pore diameter.