Abstract
Structural organization and surface acidity of a series of silica-alumina gels covering the range from 100 to 0% SiO 2 have been investigated by photoelectron spectroscopy. No superficial segregation of either SiO 2 or Al 2O 3 is observed and the existence of a distinct alumina phase below 30% SiO 2, as suggested earlier, is further supported by the appearance of an energy-loss peak. Models are presented for the interpretation of the quantitative XPS determination of surface acidity. Close comparison is made between XPS acidity results and those obtained by ir spectroscopy on the same series and a good agreement is observed.
Sign-in/Register to access full text options 
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 callDisclaimer: 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.
