Abstract
Hydrothermal Stability of Molecular Sieves SBA-15 was studied. It was characterized by N2 adsorption, X-ray diffraction and FT-IR analysis. The results indicated that water, heat and alkaline environments are acidic center caused some of the molecular sieve SBA-15, the influence of the structure of the SBA- 15 mesoporous molecular sieves have some damage, led to the decrease of the pore diameter, specific surface area. This is because the thermal stability of mesoporous molecular sieve is closely related to the silicon hydroxyl condensation. Due to the contraction of silicon hydroxyl, generated the Si-O-Si unit structure, causes the d100. Moderate Si-OH condensation can increase the stability of mesoporous structure, and excessive Si-fuelled by condensation of Ozzie and Harriet channel by Si-O keys tensile force, spacing gradually reduced resulting in progressive collapse of mesoporous structure.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: DEStech Transactions on Engineering and Technology Research
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
