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:
Jul. 12, 2011
Filed:
Aug. 10, 2007
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
A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum oxide; and 0.1 to 99% by mass of silicon dioxide, is prepared by a) treating an aluminosilicate with an aqueous alkali metal salt solution, an alkaline earth metal salt solution and mixtures thereof, under acidic conditions, to obtain a treated aluminosilicate; and b) calcining the treated aluminosilicate, to obtain the catalyst.