[HTML][HTML] Surface organometallic and coordination chemistry toward single-site heterogeneous catalysts: strategies, methods, structures, and activities
The chemical industry relies on catalytic processes, which involve mainly heterogeneous
catalysts because they offer many advantages over their homogeneous counterparts such …
catalysts because they offer many advantages over their homogeneous counterparts such …
Bridging the Gap between Industrial and Well‐Defined Supported Catalysts
Many industrial catalysts contain isolated metal sites on the surface of oxide supports.
Although such catalysts have been used in a broad range of processes for more than 40 …
Although such catalysts have been used in a broad range of processes for more than 40 …
Heterogeneous oligomerization of ethylene over highly active and stable Ni-AlSBA-15 mesoporous catalysts
Abstract Ni-AlSBA-15 oligomerization catalysts (2.6 wt% Ni, Si/Al= 7) were prepared by post-
synthesis alumination of SBA-15 silica with sodium aluminate, followed by ion exchange …
synthesis alumination of SBA-15 silica with sodium aluminate, followed by ion exchange …
Active sites in supported single-site catalysts: An NMR perspective
Development of well-defined heterogeneous catalysts requires detailed structural
characterization of active sites, an essential step toward establishing structure–activity …
characterization of active sites, an essential step toward establishing structure–activity …
Formation of a Strong Heterogeneous Aluminum Lewis Acid on Silica
KK Samudrala, W Huynh, RW Dorn… - Angewandte Chemie …, 2022 - Wiley Online Library
Abstract Al (OC (CF3) 3)(PhF) reacts with silanols present on partially dehydroxylated silica
to form well‐defined≡ SiOAl (OC (CF3) 3) 2 (O (Si≡) 2)(1). 27Al NMR and DFT calculations …
to form well‐defined≡ SiOAl (OC (CF3) 3) 2 (O (Si≡) 2)(1). 27Al NMR and DFT calculations …
Nuclear magnetic resonance: a spectroscopic probe to understand the electronic structure and reactivity of molecules and materials
This Perspective focuses on the ability of chemical shift to identify and characterize the
electronic structure and associated reactivity of molecules and materials. After a general …
electronic structure and associated reactivity of molecules and materials. After a general …
Stabilization of active, selective, and regenerable Ni-based dimerization catalysts by condensation of ethene withinordered mesopores
This study reports the high and stable ethene dimerization turnover rates conferred upon Ni-
based active sites at subambient temperatures by the condensation of liquid ethene …
based active sites at subambient temperatures by the condensation of liquid ethene …
Visibility of Al surface sites of γ-alumina: a combined computational and experimental point of view
R Wischert, P Florian, C Copéret… - The Journal of …, 2014 - ACS Publications
The nature of γ-alumina (γ-Al2O3) surface sites leaves many open questions today, and
solid-state NMR spectroscopy has been proposed and used as a tool for assessing their …
solid-state NMR spectroscopy has been proposed and used as a tool for assessing their …
Effects of surface acidity on the structure of organometallics supported on oxide surfaces
KK Samudrala, MP Conley - Chemical Communications, 2023 - pubs.rsc.org
Well-defined organometallics supported on high surface area oxides are promising
heterogeneous catalysts. An important design factor in these materials is how the metal …
heterogeneous catalysts. An important design factor in these materials is how the metal …
Computational Insights into Active Site Formation during Alkene Metathesis over a MoOx/SiO2 Catalyst: The Role of Surface Silanols
J Handzlik, K Kurleto, M Gierada - ACS Catalysis, 2021 - ACS Publications
A MoO x/SiO2 system is an effective catalyst for alkene metathesis; however, the mechanism
of the transformation of the surface metal oxide species into active alkylidene sites is not well …
of the transformation of the surface metal oxide species into active alkylidene sites is not well …