Supported homogeneous catalyst makes its own liquid phase

Kaftan A, Schönweiz A, Nikiforidis I, Hieringer W, Dyballa KM, Franke R, Görling A, Libuda J, Wasserscheid P, Laurin M, Haumann M (2015)

Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Publisher: Elsevier

Book Volume: 321

Pages Range: 32-38

DOI: 10.1016/j.jcat.2014.10.019

Abstract

2,2'-((3,3'-di-tert-butyl-5,5'-dimethoxy-[1,1'-biphenylj-2,2'-diyl)-bis(oxy))bis(4,4,5,5-tetraphenyl-1,3,2-dioxaphospholane) modified rhodium complexes molecularly adsorbed onto porous silica powder show surprisingly high activity and regioselectivity in the gas-phase hydroformylation of propene to but-anal, with no sign of deactivation. Operando IR investigations combined with density functional theory calculations confirm a side reaction: the aldol condensation of the butanal products. These heavier by-products accumulate inside the pores of the catalytic material. IR and gas chromatography show a direct relation between formation of enones, products of the aldol condensation, performance, and stability of the catalytic system. This demonstrates that the aldol condensation products generated in situ act as a solvent providing an ideal environment to the impregnated homogeneous catalyst. (c) 2014 Elsevier Inc. All rights reserved.

Authors with CRIS profile

Additional Organisation(s)

Involved external institutions

Evonik Degussa GmbH Germany (DE)

How to cite

APA:

Kaftan, A., Schönweiz, A., Nikiforidis, I., Hieringer, W., Dyballa, K.M., Franke, R.,... Haumann, M. (2015). Supported homogeneous catalyst makes its own liquid phase. Journal of Catalysis, 321, 32-38. https://dx.doi.org/10.1016/j.jcat.2014.10.019

MLA:

Kaftan, Andre, et al. "Supported homogeneous catalyst makes its own liquid phase." Journal of Catalysis 321 (2015): 32-38.

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