Solvent-free semihydrogenation of acetylene alcohols in a capillary reactor coated with a Pd-Bi/TiO2 catalyst

Cherkasov, Nikolay; Ibhadon, Alex O.; Rebrov, Evgeny V.

Abstract

© 2016 Elsevier B.V. All rights reserved. A solvent-free semihydrogenation of 2-methyl-3-butyn-2-ol (MBY) to 2-methyl-3-buten-2-ol was performed in a capillary reactor (10 m long, 0.53 mm i.d.) coated with a titania supported Pd-Bi catalyst. Several coatings with different Pd/Bi ratio have been prepared. The catalysts have been characterized with SEM, TEM, EDX, XRD analysis and N 2 adsorption-desorption measurements. The maximum alkene yield of 90% was obtained at a molar Pd/Bi ratio of 11. The yield was increased to 95% in the presence of 10 mol.% pyridine in the reaction mixture. The alkene selectivity decreased with time due to leaching of Bi. The leaching was fully suppressed in the presence of 1 vol.% acetic acid in the reaction mixture. The catalyst remained stable for 100 h of continuous operation. The results demonstrate that capillary reactors provide alkene selectivity the same compared to ideal stirred tank batch reactors.

Citation

Cherkasov, N., Ibhadon, A. O., & Rebrov, E. V. (2016). Solvent-free semihydrogenation of acetylene alcohols in a capillary reactor coated with a Pd-Bi/TiO2 catalyst. Applied catalysis. A, General, 515, 108-115. https://doi.org/10.1016/j.apcata.2016.01.019

• Journal Article Type: Article
• Acceptance Date: Jan 15, 2016
• Online Publication Date: Jan 19, 2016
• Publication Date: Apr 10, 2016
• Deposit Date: Apr 5, 2016
• Publicly Available Date: Apr 5, 2016
• Journal: Applied catalysis A : general
• Print ISSN: 0926-860X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 515
• Pages: 108-115
• DOI: https://doi.org/10.1016/j.apcata.2016.01.019
• Keywords: Semihydrogenation; Acetylene; Pd; Solvent-free
• Public URL: https://hull-repository.worktribe.com/output/434961
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0926860X16300199
• Additional Information: This article is maintained by: Elsevier; Article Title: Solvent-free semihydrogenation of acetylene alcohols in a capillary reactor coated with a Pd–Bi/TiO2 catalyst; Journal Title: Applied Catalysis A: General; CrossRef DOI link to publisher maintained version: http://dx.doi.org/10.1016/j.apcata.2016.01.019; Content Type: article; Copyright: Copyright © 2016 Elsevier B.V. All rights reserved.