The porous cordierite-mullite ceramics were prepared by the pore-forming
in-situ technique. The characterizations of porous cordierite-mullite
ceramics were determined by an X-ray diffractometer (XRD), a scanning
electron microscopy (SEM), and a microscopy measured method, etc., and the
effect of particle size on phase composition, pore characterization and
strength were investigated. It?s found that particle size affects strongly
the formations of cordierite and mullite, and then changes the pore
characterization and strength. With the decrease of the particle size, the
sintering temperature at which the formations of cordierite and mullite take
place extremely fast decreases, the pore size distribution becomes from
bi-peak mode to mono-peak mode, the porosity and the median pore size
decrease but strength increases. The most opposite mode is the specimen
sintered at 1400 ?C from the grinded powder with an average particle size of
10.2 ?m, which consists of cordierite, mullite and minor spinel, and has a
high apparent porosity (40 %), a high compressive strength (58.4 MPa), a
small median pore size (6.3 ?m) and well-developed necks between particles.
Effect of Particle Size on the HDS Activity of Molybdenum Sulfide