Electrostatic grafting of a triphenylphosphine sulfonate on SBA-15: application in palladium catalyzed hydrogenation

Wang L, Dehe D, Philippi T, Seifert A, Ernst S, Zhou Z, Hartmann M, Klupp Taylor R, Singh AP, Jia M, Thiel WR (2012)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2012

Journal

Catalysis: Science and Technology Royal Society of Chemistry

Publisher: Royal Society of Chemistry

Book Volume: 2

Pages Range: 1188-1195

Journal Issue: 6

DOI: 10.1039/c2cy00535b

Abstract

A novel strategy for the immobilization of a sulfonate functionalized triphenylphosphine ligand by ion-ion interactions on an imidazolium modified SBA-15 is presented. A support containing electrostatically grafted triphenylphosphine as the ligand was reacted with PdCl2( CNPh)(2) and the resulting hybrid material catalyzed olefin hydrogenation under mild conditions. The catalyst exhibits excellent activity, selectivity and stability and it can be reused for at least ten times without any loss of activity. An analogous but covalently grafted palladium system does not show any hydrogenation activity under the same conditions. TEM images of the used catalyst clearly prove the absence of palladium nanoparticles. Additionally, XPS investigations prove that palladium( 0) is formed and the phosphine is oxidized. By AAS no palladium contamination down to 0.5 X 10(-4) mmol could be detected in the products and further leaching tests verified the reaction to be truly heterogeneous. This concept of non-covalent immobilization guarantees a tight bonding of the catalytically active species to the surface in combination with a high mobility, which should be favorable for other catalyses, too.

Authors with CRIS profile

Zhou Zhou Interdisziplinäres Zentrum Erlangen Catalysis Resource Center (ECRC) Martin Hartmann Professur für Katalyse Robin Klupp Taylor Professur für Nanostructured Particles

Involved external institutions

Technische Universität Kaiserslautern DE Germany (DE) Technische Universität Chemnitz DE Germany (DE) National Chemical Laboratory (NCL) IN India (IN) Jilin University (JLU) / 吉林大学 CN China (CN)

How to cite

APA:

Wang, L., Dehe, D., Philippi, T., Seifert, A., Ernst, S., Zhou, Z.,... Thiel, W.R. (2012). Electrostatic grafting of a triphenylphosphine sulfonate on SBA-15: application in palladium catalyzed hydrogenation. Catalysis: Science and Technology, 2(6), 1188-1195. https://dx.doi.org/10.1039/c2cy00535b

MLA:

Wang, Lei, et al. "Electrostatic grafting of a triphenylphosphine sulfonate on SBA-15: application in palladium catalyzed hydrogenation." Catalysis: Science and Technology 2.6 (2012): 1188-1195.

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