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.

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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://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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