The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Toluene alkylation with methanol and ethylene over HZSM-5 zeolites has been investigated in order to understand the effects of deposited coke and postsynthesis surface silylation on the toluene conversion and product selectivity. Long time-on-stream kinetic runs, performed under conditions in which total toluene conversion did not decrease but concentration of coke continuously increased were...
Methylamine synthesis from methanol and ammonia over parent and modified Brønsted acidic mordenites is studied byin situinfrared spectroscopy and kinetic analysis to elucidate the role of elementary steps for activity and selectivity.In situinfrared spectroscopy reveals that all methylammonium ions are formed in the micropores of these catalysts. The formation of the chemisorbed methylamines, however,...
The use of infrared spectroscopy to probe the surface acidity of oxides and molecular sieves is reviewed. The experimental requirements and the type and nature of probe molecules available are also discussed. Special emphasis is given to the criteria that have to be met to arrive at a characterization of the solid that is useful for its catalytic application.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.