The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
Feb. 25, 2011
Horst-werner Zanthoff, Muelheim a.d. Ruhr, DE;
Dietrich Maschmeyer, Recklinghausen, DE;
Thomas Quandt, Marl, DE;
Franz Nierlich, Marl, DE;
Silvia Santiago Fernandez, Oviedo, ES;
Stephan Houbrechts, Duffel, BE;
Georg Skillas, Hanau, DE;
Kurt-alfred Gaudschun, Recklinghausen, DE;
Horst-Werner Zanthoff, Muelheim a.d. Ruhr, DE;
Dietrich Maschmeyer, Recklinghausen, DE;
Thomas Quandt, Marl, DE;
Franz Nierlich, Marl, DE;
Silvia Santiago Fernandez, Oviedo, ES;
Stephan Houbrechts, Duffel, BE;
Georg Skillas, Hanau, DE;
Kurt-Alfred Gaudschun, Recklinghausen, DE;
Evonik Oxeno GmbH, Marl, DE;
Abstract
The present invention relates to a process for preparing a catalyst which, in a formal sense, comprises 0.1 to 20% by mass of alkali metal and/or alkaline earth metal oxide, 0.1 to 99% by mass of oxide and 0.1 to 99% by mass of silicon dioxide, which is characterized in that it aluminum comprises the steps of treating an aluminosilicate with an aqueous alkali metal and/or alkaline earth metal salt solution under acidic conditions and calcining the aluminosilicate treated with aqueous alkali metal and/or alkaline earth metal salt solution, and to a catalyst which is obtainable by this process and, in a formal sense, comprises alkali metal and/or alkaline earth metal oxide, aluminum oxide and silicon dioxide, which is characterized in that the catalyst, in a formal sense, has a content of alkali metal and/or alkaline earth metal oxides of 0.5 to 20% by mass, a content of aluminum oxide of 4 to 30% by mass and a content of silicon dioxide of 60 to 95% by mass, and to the use of this catalyst in a process for preparing isoolefins having 4 to 6 carbon atoms by catalytic gas phase cleavage of tertiary alcohols or alkyl tert-alkyl ethers.