Abstract
AbstractThe influence of dealumination of two commercial amorphous silica‐aluminas (ASAs) with acetylacetone on their textural properties, acidity and catalytic activity was studied by N2‐sorption, NH3‐TPD, FTIR of adsorbed pyridine as well as 1H and 27Al MAS NMR. Acetylacetone treatment increases the pore volume and surface area (+20→+30%) of commercial ASA without changing the pore size. More than half of the Al species are extracted from ASA but the total acidity is preserved or even slightly increased (for the ASA with higher Al content). The percentage of acidic Al is increased by a factor 2. Dealumination results in a better access to acid sites and an increase of medium Brønsted acid sites (BAS), leading to a 1.5 higher catalytic activity for 3,3‐Dimethyl‐1‐butene (33DMB1) isomerization.
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.
