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:
Oct. 15, 2013
Filed:
May. 28, 2009
Frederick Merrill Galloway, Jr., Tomball, TX (US);
Ashim Kumar Ghosh, Houston, TX (US);
Mohammad Shafiei, Sugar Land, TX (US);
Peter N. Loezos, Houston, TX (US);
Frederick Merrill Galloway, Jr., Tomball, TX (US);
Ashim Kumar Ghosh, Houston, TX (US);
Mohammad Shafiei, Sugar Land, TX (US);
Peter N. Loezos, Houston, TX (US);
Saudi Basic Industries Corporation, Riyadh, SA;
Abstract
The present invention is for a process for the alkylation of aromatic compounds, with a shape-selective zeolite catalyst. The process has reactors in series with Caromatics being separated from the product stream effluents from each reactor before passing the reactor effluent to the next reactor with an additional input of methanol. The Caromatics are separated into para-xylene and other Caromatics. This process is applicable for toluene methylation having a molar excess of toluene:methanol. i.e., greater than 1:1, with a shape-selective catalyst of an aluminosilicate zeolite, such as ZSM-5 which has been modified with phosphorus, to produce para-xylene (p-xylene).