	US 12,070,738 B2
	Supported tantalum catalyst for the production of 1,3-butadiene
Ewelina Jankowiak, Imielin (PL); Szymon Skowronek, Wodzislaw Ślaski (PL); and Piotr Zapala, Zabrze (PL)
Assigned to SYNTHOS DWORY 7 SPÓLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA, Oswiecim (PL)
Appl. No. 17/642,885
Filed by SYNTHOS DWORY 7 SPÓŁKA Z OGRANICZONA̧ ODPOWIEDZIALNOŚCIA̧, Oswiecim (PL)
PCT Filed Sep. 15, 2020, PCT No. PCT/EP2020/075778 § 371(c)(1), (2) Date Mar. 14, 2022, PCT Pub. No. WO2021/052968, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 19461582 (EP), filed on Sep. 16, 2019.
Prior Publication US 2022/0395813 A1, Dec. 15, 2022
Int. Cl. B01J 23/20 (2006.01); B01J 21/08 (2006.01); B01J 35/61 (2024.01); B01J 37/02 (2006.01); B01J 37/08 (2006.01); C07C 1/207 (2006.01)

CPC B01J 23/20 (2013.01) [B01J 21/08 (2013.01); B01J 35/615 (2024.01); B01J 35/617 (2024.01); B01J 37/0213 (2013.01); B01J 37/0236 (2013.01); B01J 37/088 (2013.01); C07C 1/2072 (2013.01); C07C 2521/08 (2013.01); C07C 2523/20 (2013.01)]

24 Claims

1. A process for the production of 1,3-butadiene, the process comprising

i) contacting a feed comprising ethanol and acetaldehyde with a supported tantalum catalyst to obtain a raw product comprising 1,3-butadiene,

wherein the catalyst is obtainable by a process comprising

a) preparing a water-soluble tantalum precursor by reacting one or more tantalum compound(s) in aqueous solution and under oxidative conditions,

b) aqueous impregnating a support with the water-soluble tantalum precursor obtained from step a),

c) drying, and

d) calcination.