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. 28, 2006
Filed:
Dec. 06, 2002
Ajit Bhaskar Dandekar, Fairfax, VA (US);
John P. Mcwilliams, Swedesboro, NJ (US);
Thomas Francis Degnan, Jr., Moorestown, NJ (US);
Michael Hryniszak, Bordentown, NJ (US);
Ajit Bhaskar Dandekar, Fairfax, VA (US);
John P. McWilliams, Swedesboro, NJ (US);
Thomas Francis Degnan, Jr., Moorestown, NJ (US);
Michael Hryniszak, Bordentown, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
In a method for producing monoalkylated aromatic compounds, an aromatic feed is contacted with an alkylating agent in the presence of a catalyst comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07, and 3.42±0.07 Angstrom. The catalyst also contains at least one metal cation selected from Groups 1–4 and 7–16 of the Periodic Table of Elements, wherein the metal cation is present in an amount of at least 0.5% by weight of the catalyst, whereby selectivity of the catalyst to produce monoalkylates over polyalkylates is improved as compared with the identical catalyst but without the metal cation present.