US 12,410,111 B2
Processes for converting C8 aromatic hydrocarbons
Eric D. Metzger, Houston, TX (US); Mayank Shekhar, Houston, TX (US); Wenyih F. Lai, Bridgewater, NJ (US); Paul Podsiadlo, Spring, TX (US); Dominick A. Zurlo, Easton, PA (US); and Kathleen M. Keville, Beaumont, TX (US)
Assigned to ExxonMobil Chemical Patents Inc., Baytown, TX (US)
Appl. No. 17/996,007
Filed by ExxonMobil Chemical Patents Inc., Baytown, TX (US)
PCT Filed Mar. 12, 2021, PCT No. PCT/US2021/022241
§ 371(c)(1), (2) Date Oct. 12, 2022,
PCT Pub. No. WO2021/211240, PCT Pub. Date Oct. 21, 2021.
Claims priority of provisional application 63/011,436, filed on Apr. 17, 2020.
Claims priority of application No. 20179410 (EP), filed on Jun. 11, 2020.
Prior Publication US 2023/0212094 A1, Jul. 6, 2023
Int. Cl. B01J 29/40 (2006.01); B01J 29/80 (2006.01); B01J 35/30 (2024.01); B01J 35/61 (2024.01); C07C 4/18 (2006.01); C07C 5/27 (2006.01)
CPC C07C 5/2737 (2013.01) [B01J 29/40 (2013.01); B01J 29/80 (2013.01); B01J 35/393 (2024.01); B01J 35/613 (2024.01); B01J 35/615 (2024.01); B01J 35/617 (2024.01); C07C 4/18 (2013.01); C07C 2529/40 (2013.01); C07C 2529/80 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A process for converting C8 aromatic hydrocarbons, comprising:
(I) feeding a gaseous hydrocarbon feed comprising meta-xylene, ortho-xylene, or both into a conversion zone; and
(II) contacting the gaseous hydrocarbon feed with a catalyst comprising a ZSM-11 zeolite in the conversion zone under conversion conditions to effect isomerization of at least a portion of any meta-xylene, at least a portion of any ortho-xylene, or both to produce a conversion product n comprising para-xylene, wherein the ZSM-11 zeolite has an alpha value of 1 to 3,000, a total surface area of less than 500 m2/g, and a molar ratio of silica to alumina of from 25 to 50.