Control of Mechanical Stability of Hollow Silica Particles, and Its Measurement by Mercury Intrusion Porosimetry Jelena Lasio* , Alan M. Allgeier* , Christopher D. Chan , J. David Londono , Ebrahim Najafi , and Francis J. Woerner †Chemours Titanium Technologies, Experimental station, Wilmington De, 19803 ‡DuPont Corporate Center for Analytical Sciences, E. I. DuPont De Nemours and Co, Experimental station, Wilmington, De 19803 -0.0002 0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012 0.0014 0.0016 0.0018 0 200 400 600 800 1000 dV/dw (cc / g* Å) Pore diameter (Å) 2a 2b 2c 2d 2e 2f 2g 2h 2i 2j