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.
The use of temperature-programmed desorption (TPD) of isopropylamine (IPAm) was extended to quantify the Brønsted acid site distribution in various modified FAU-type zeolites. We show that while the protons in nonsteamed H-FAU zeolites are distributed evenly between the supercages and sodalite cages, steaming perturbs this distribution by generating nonframework alumina species. Usually, mild steaming...
Y-type zeolites with mesopore volume of 0.05 to 0.6 cm 3 /g (derived from pores of 2 to 60 nm diameter) are prepared by hydrothermal treatment of Y zeolites with an aqueous solution containing dissolved salts, acids, bases, or water-soluble organic compounds at a temperature greater than the atmospheric boiling point of the solution. The mesopore volume of the hydrothermally treated...
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.