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 title catalyst, exhibiting improved hydrothermal and heat stability, contains a strongly acidic Y zeolite having a silica/alumina ratio of 300:1 to 1:1 and a unit cell size of 24.20-24.67 9, or a silicoaluminophosphate having a pore size of 3-9 9, modified with a fluoride-containing compound. The catalyst is useful, for example, in a second stage reactor for the improved conversion of C ...
The catalyst comprises a surface-modified crystalline aluminosilicate zeolite, such as a ZSM-5-type zeolite in a matrix or binder, such as alumina, having a specified metal content. The process is especially useful for dewaxing lubricating oil basestocks.
A process is described for producing alkyl tertiary-alkyl ethers in one step which comprises reacting tertiary-butanol with an alkanol in the presence of a catalyst which exhibits extended life comprising β-zeolite modified with one or more metals selected from groups IA (especially Li) and IIIB (especially rare earth) of the Periodic Table and continuously contacting the alkanol and tertiary-butanol...
A process is described for preparing alkyl tertiary-alkyl ethers, especially methyl tertiary-butyl ether, in one step which comprises reacting tertiary-butanol and a C 1 -C 4 primary alcohol in the presence of a catalyst consisting essentially of a pentasil zeolite having a silica/alumina ratio of 50-150, optionally with a binder, at a temperature of 80-200°C and at atmospheric pressure...
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.