Výsledky vyhledávání - "Nicolás A. Grosso-Giordano"

Spectroscopic Characterization of μ-η1:η1-Peroxo Ligands Formed by Reaction of Dioxygen with Electron-Rich Iridium Clusters

Autor: Christian Schöttle, Andrew Palermo, Shengjie Zhang, Bruce C. Gates, David A. Dixon, Heinz Frei, Alexander Katz, Nicolás A. Grosso-Giordano, Alexander Okrut

Publikováno v: Inorganic Chemistry. 58:14338-14348

Although oxygen is a common ligand in supported metal catalysts, its coordination has been challenging to elucidate. We now characterize a diiridium complex that has been previously shown by X-ray diffraction crystallography to incorporate a μ-η1:�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0458b57ab5ed36bf0796450f32dc4eec
https://doi.org/10.1021/acs.inorgchem.9b01529

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Understanding the role of Zn2+ in surfactant-free layered silicate delamination: Exfoliation of magadiite

Autor: Nicolás A. Grosso-Giordano, Alexander Katz, Christian Schöttle, Stacey I. Zones, Alexander Okrut

Publikováno v: Microporous and Mesoporous Materials. 283:55-63

We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a9ce759b7acae1467516f7858d39cd4
https://doi.org/10.1016/j.micromeso.2019.03.048

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Dynamic Reorganization and Confinement of TiIV Active Sites Controls Olefin Epoxidation Catalysis on Two-Dimensional Zeotypes

Autor: Stacey I. Zones, Nicolás A. Grosso-Giordano, Simon R. Bare, Alexey Boubnov, Alexander Katz, David W. Small, Adam S. Hoffman

Publikováno v: Journal of the American Chemical Society. 141:7090-7106

The effect of dynamic reorganization and confinement of isolated TiIV catalytic centers supported on silicates is investigated for olefin epoxidation. Active sites consist of grafted single-site ca...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8b48d7f08f68c0233f34449322fe359f
https://doi.org/10.1021/jacs.9b02160

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Bulky Calixarene Ligands Stabilize Supported Iridium Pair-Site Catalysts

Autor: Andrew Palermo, Andrew Solovyov, Alexander Okrut, Bruce C. Gates, Christian Schöttle, Alexander Katz, Erjia Guan, Nicolás A. Grosso-Giordano

Publikováno v: Journal of the American Chemical Society. 141:4010-4015

Although essentially molecular noble metal species provide active sites and highly tunable platforms for the design of supported catalysts, the susceptibility of the metals to reduction and aggregation and the consequent loss of catalytic activity an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eff26b0a278b4049c1a0af793c5505c4
https://doi.org/10.1021/jacs.8b13013

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Substitution of Cetyltrimethylammonium for OSDA Cations During B-SSZ-70 Zeotype Synthesis and Its Influence on Delamination

Autor: Stacey I. Zones, Maya Ramamurthy, Nicolás A. Grosso-Giordano, Alexander Okrut, Dan Xie, Manish Kumar Mishra, Alexander Katz, Son-Jong Hwang, Le Xu

We investigated the substitution of structure-directing agent diisobutylimidazolium hydroxide with cetyltrimethylammonium hydroxide (CTA+OH−) surfactant in the synthesis gel of layered-zeotype-precursor B-SSZ-70(P). At low substitution levels, CTA+

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::346933eced1276dd358ede2284e6d95b
https://resolver.caltech.edu/CaltechAUTHORS:20210322-094336661

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Characterization of a Molecule Partially Confined at the Pore Mouth of a Zeotype

Autor: Andrew Solovyov, Nicolás A. Grosso-Giordano, Stacey I. Zones, David W. Small, Alexander Katz, Hubert Koller, Le Xu, Christian Schroeder

Publikováno v: Angewandte Chemie (International ed. in English). 60(18)

We investigate the interaction between a molecule and a pore mouth-a critical step in adsorption processes-by characterizing the conformation of a macrocyclic calix[4]arene-TiIV complex, which is grafted on the external surface of a zeotype (*-SVY).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f727184cd5c8b28b310ef1f607557a4d
https://pubmed.ncbi.nlm.nih.gov/33522703

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Effect of Defect Site Preorganization on Fe(III) Grafting and Stability: A Comparative Study of Delaminated Zeolite vs Amorphous Silica Supports

Autor: Fernande Grandjean, Alexander Okrut, Stacey I. Zones, Alexander Katz, Dianne J. Xiao, Gary J. Long, Alexander J. Yeh, Nicolás A. Grosso-Giordano

Publikováno v: Chemistry of Materials. 29:6480-6492

The stabilization of isolated grafted Fe3+ sites on siliceous supports is investigated by a comparative study of crystalline versus amorphous materials. Our synthetic approach treats crystalline delaminated zeolite DZ-1 and amorphous silica (SiO2) wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::18b4973c388cbda37fae65597041b13f
https://doi.org/10.1021/acs.chemmater.7b02062

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Epoxidation of 1-octene under harsh tail-end conditions in a flow reactor II: impact of delaminated-zeolite catalyst surface area and structural integrity on catalytic performance

Autor: Stacey I. Zones, Alexander Katz, Nicolás A. Grosso-Giordano, Christian Schöttle, Martina Aigner, Alexander Okrut

Publikováno v: Reaction Chemistry & Engineering. 2:852-861

Building on our previous study of delaminated-zeolite catalysts for harsh tail-end conditions in an epoxidation flow reactor employing organic hydroperoxide as oxidant, this manuscript compares approaches for delamination in catalyst prepration. In o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::605ec92add6244657f69247fc7df9dfa
https://doi.org/10.1039/c7re00138j

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