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. 01, 2019
Filed:
Feb. 04, 2016
Applicant:
Shell Oil Company, Houston, TX (US);
Inventors:
Assignee:
SHELL OIL COMPANY, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 39/40 (2006.01); B01J 29/40 (2006.01); B01J 29/44 (2006.01); B01J 29/46 (2006.01); C01B 39/12 (2006.01); B01J 37/00 (2006.01); C01B 39/38 (2006.01); C07C 4/18 (2006.01);
U.S. Cl.
CPC ...
B01J 29/46 (2013.01); B01J 29/40 (2013.01); B01J 29/405 (2013.01); B01J 29/44 (2013.01); B01J 37/0009 (2013.01); C01B 39/12 (2013.01); C01B 39/38 (2013.01); C01B 39/40 (2013.01); C07C 4/18 (2013.01); B01J 2229/16 (2013.01); B01J 2229/20 (2013.01); B01J 2229/42 (2013.01); C07C 2529/40 (2013.01); C07C 2529/42 (2013.01); C07C 2529/44 (2013.01); C07C 2529/46 (2013.01); C07C 2529/48 (2013.01); Y02P 20/52 (2015.11);
Abstract
A new configuration of ZSM-5 is provided whereby the crystals have a higher average silica to alumina ratio at the edges of each crystallite than in the centre as determined from a narrow slit line scan profile obtained from SEM/EDX or TEM/EDX elemental analysis. Such ZSM-5 crystals are obtained by a preparation process using L-tartaric acid. The new configuration ZSM-5 provides significantly reduced xylene losses in ethylbenzene dealkylation, especially when combined with silica as binder, and one or more hydrogenation metals selected from platinum, tin, lead, silver, copper, and nickel.