US 12,331,009 B2
Catalyst for the synthesis of alkyl mercaptan and process for its preparation
Ludger Lautenschuetz, Hanau (DE); Nadine Duerr, Alsbach (DE); Achim Fischer, Goldbach (DE); Manuel Weber-Stockbauer, Hohenau (DE); Oliver Yair Gutierrez-Tinoco, Richland, WA (US); Ricardo Bermejo Deval, Munich (DE); and Johannes A. Lercher, Ottobrunn (DE)
Assigned to Evonik Operations GmbH, Essen (DE)
Appl. No. 17/425,907
Filed by Evonik Operations GmbH, Essen (DE)
PCT Filed Jan. 27, 2020, PCT No. PCT/EP2020/051903
§ 371(c)(1), (2) Date Jul. 26, 2021,
PCT Pub. No. WO2020/156992, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 19154123 (EP), filed on Jan. 29, 2019.
Prior Publication US 2022/0194896 A1, Jun. 23, 2022
Int. Cl. C07C 319/08 (2006.01); B01J 21/06 (2006.01); B01J 23/04 (2006.01); B01J 35/30 (2024.01); B01J 37/00 (2006.01); B01J 37/02 (2006.01); B01J 37/08 (2006.01)
CPC C07C 319/08 (2013.01) [B01J 21/063 (2013.01); B01J 21/066 (2013.01); B01J 23/04 (2013.01); B01J 35/397 (2024.01); B01J 37/0009 (2013.01); B01J 37/0203 (2013.01); B01J 37/082 (2013.01)] 8 Claims
 
1. A process for preparing an alkyl mercaptan, the process comprising:
reacting an alkyl alcohol with hydrogen sulfide in the presence of a catalyst comprising:
a support; and
5 to 20 wt. % of cesium oxide, based on total catalyst weight, wherein the support consists of titanium dioxide and/or zirconium dioxide, and at least a part of the support has a tetragonal phase.