ZrO2/MCM-41, with ZrO2 dispersed as a monolayer, showing clearly ordered lo
ng-range structure and pore structure has been prepared. The changes in XRD
patterns with thermal or hydrothermal treatment indicates that after the m
onolayer dispersion of ZrO2, the thermal and hydrothermal stability of MCM-
41 are significantly improved. (C) 2001 Elsevier Science B.V. All rights re
served.