Výsledky vyhledávání - "Christopher J. Mulligan"

In situ study of metal leaching from Pd/Al2O3 induced by K2CO3

Autor: Davide Ferri, Mark A. Newton, Paul Thompson, Hermann Emerich, King Kuok (Mimi) Hii, Ivo Alxneit, Christopher J. Mulligan

Publikováno v: Catalysis Science & Technology. 10:466-474

In situ quick extended X-ray absorption fine structure spectroscopy (QEXAFS) was employed to study temporally and spatially the leaching of Pd from a heterogeneous catalyst caused by K2CO3.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::feaad4e37e7a95e657ace1d2cf7ec40c
https://doi.org/10.1039/c9cy02121c

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Revisiting the mechanism of the Fujiwara-Moritani reaction

Autor: Jeremy S. Parker, Christopher J. Mulligan, King Kuok (Mimi) Hii

The Fujiwara–Moritani reaction between p-methylacetanilide and n-butyl acrylate, catalysed by Pd(OAc)2 in the presence of toluenesulfonic acid and benzoquinone, was (re-)investigated using reaction calorimetry and complementary spectroscopic method

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5197d314706cb52416df295e102c0e0e
http://hdl.handle.net/10044/1/78974

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Peracetic Acid: An Atom-Economical Reagent for Pd-Catalyzed Acetoxylation of C–H Bonds

Autor: Christopher J. Mulligan, Jeremy S. Parker, King Kuok (Mimi) Hii, Oliver J. Newton, Sharanappa M. Bagale

Publikováno v: ACS Sustainable Chemistry & Engineering. 7:1611-1615

Peracetic acid can be used universally as a source of acetate and an oxidant for the selective acetoxylation of C–H bonds in compounds containing ortho-directing groups, catalyzed by Pd(OAc)2. Compared to previous procedures, where persulfates and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08c7c95b789af64922c967c0f00fabbe
https://doi.org/10.1021/acssuschemeng.8b05370

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Effects of Cl on the reduction of supported PdO in ethanol/water solvent mixtures

Autor: Bao N. Nguyen, Luis A. Adrio, Mark A. Newton, Christopher J. Mulligan, Rachel Nichols, Klaus Hellgardt, John B. Brazier, Paul Thompson, Stephen A. Parry, King Kuok (Mimi) Hii, Elena M. Barreiro

Publikováno v: 'Catalysis, Structure & Reactivity ', vol: 3, pages: 54-62 (2017)
Catalysis, Structure & Reactivity, Vol 3, Iss 1-2, Pp 54-62 (2017)

The reduction of γ-Al2O3-supported PdO in flowing aqueous ethanol was investigated. Quick EXAFS (QEXAFS) performed at the Pd K-edge reveals that the presence of Cl can have a profound effect on the reduction process. At low loadings of Pd (1 wt-%),

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2578f4ad6e72855e9e04d22d18b2233a
https://epn-library.esrf.fr/flora/jsp/index_view_direct_anonymous.jsp?record=doc:PUB_ESRF:47402

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Operando XAFS of supported Pd nanoparticles in flowing ethanol/water mixtures: Implications for catalysis

Autor: Mark A. Newton, Klaus Hellgardt, John B. Brazier, Elena M. Barreiro, Herman Emmerich, Christopher J. Mulligan, King Kuok (Mimi) Hii, Luis A. Adrio, Stephen A. Parry

Publikováno v: 'Green Chemistry ', vol: 18, pages: 406-411 (2016)
Green Chemistry
Green Chemistry, Royal Society of Chemistry, 2016, 18 (2), pp.406-411. ⟨10.1039/c5gc01600b⟩

International audience; Ethanol-water, a prototypical 'green' solvent mixture, cannot be considered as inert toward supported Pd nanoparticles. We establish severe size dependencies in Pd redox behavior, persistent gradients in Pd phase in a plug-flo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bd32a03d829ae6824e664f5bc2fdcda
https://epn-library.esrf.fr/flora/jsp/index_view_direct_anonymous.jsp?record=doc:PUB_ESRF:44092

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Restructuring of supported Pd by green solvents: an operando quick EXAFS (QEXAFS) study and implications for the derivation of structure–function relationships in Pd catalysis

Autor: Christopher J. Mulligan, John B. Brazier, Luis A. Adrio, Hermann Emerich, King Kuok (Mimi) Hii, Klaus Hellgardt, Elena M. Barreiro, Mark A. Newton

Publikováno v: 'Catalysis Science & Technology ', vol: 6, pages: 8525-8531 (2016)

Transmission electron microscopy (TEM) is commonly used as an ex-situ technique to determine structural changes by comparing images of catalyst particles before and after a reaction. This requires the use of an alcoholic solvent to disperse the parti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92dbcfbbc94594d52038b75242bacdde
https://doi.org/10.1039/c6cy02073a

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Effect of retained chlorine in ENCAT™ 30 catalysts on the development of encapsulated Pd: insights from in situ Pd K, L3 and Cl K-edge XAS

Autor: Mark. A. Newton, Rachel Nicholls, John B. Brazier, Bao N. Nguyen, Christopher J. Mulligan, Klaus Hellgardt, Elena M. Barreiro, Hermann Emerich, King Kuok (Mimi) Hii, Irina Snigireva, Paul B. J. Thompson

Publikováno v: 'Catalysis, Structure & Reactivity ', vol: 3, pages: 149-156 (2017)
Catalysis, Structure & Reactivity, Vol 3, Iss 4, Pp 149-156 (2017)

In situ X-ray absorption spectroscopy (XAS) and Pd K, LIII, and Cl K-edges shows that Cl can be present in significant amounts in ENCAT™ 30 catalysts and that it can severely retard Pd nanoparticle (NP) development in flowing solvents. We also show

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::466306aae7327a305c6cf7a62f5026bc
http://hdl.handle.net/10044/1/56131

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