Reactivity of surface species in heterogeneous catalysts probed by in situ X-ray absorption techniques

S Bordiga, E Groppo, G Agostini… - Chemical …, 2013 - ACS Publications
Starting from the late seventies, the progressively increased availability of synchrotron light
sources allowed the execution of experiments requiring a high X-ray flux in a continuous …

Design of Lewis-acid centres in zeolitic matrices for the conversion of renewables

PY Dapsens, C Mondelli… - Chemical Society Reviews, 2015 - pubs.rsc.org
The catalytic conversion of renewable feedstocks into chemicals is pursued as a means to
sustainably fulfil future societal needs. Due to the oxygen-rich nature of bio-derived …

Lewis acid zeolites for biomass conversion: Perspectives and challenges on reactivity, synthesis, and stability

HY Luo, JD Lewis… - Annual review of chemical …, 2016 - annualreviews.org
Zeolites containing Sn, Ti, Zr, Hf, Nb, or Ta heteroatoms are versatile catalysts for the
activation and conversion of oxygenated molecules owing to the unique Lewis acid …

Synthesis, crystallization mechanism, and catalytic properties of titanium-rich TS-1 free of extraframework titanium species

W Fan, RG Duan, T Yokoi, P Wu… - Journal of the …, 2008 - ACS Publications
A new route to the synthesis of TS-1 has been developed using (NH4) 2CO3 as a
crystallization-mediating agent. In this way, the framework Ti content can be significantly …

A review on titanosilicate-1 (TS-1) catalysts: Research progress of regulating titanium species

B Wang, Y Guo, J Zhu, J Ma, Q Qin - Coordination Chemistry Reviews, 2023 - Elsevier
Abstract Titanosilicate-1 (TS-1) has attracted extensive attention of researchers due to its
unique shape-selective catalytic oxidation performance and excellent hydrothermal stability …

Evidence of defect-promoted reactivity for epoxidation of propylene in titanosilicate (TS-1) catalysts: a DFT study

DH Wells Jr, WN Delgass Jr… - Journal of the American …, 2004 - ACS Publications
Our density functional theory study of hydroperoxy (OOH) intermediates on various model
titanosilicalite (TS-1) Ti centers explores how microstructural aspects of Ti sites effect …

Reactivity of Ti (iv) species hosted in TS-1 towards H 2 O 2–H 2 O solutions investigated by ab initio cluster and periodic approaches combined with experimental …

S Bordiga, F Bonino, A Damin… - Physical Chemistry …, 2007 - pubs.rsc.org
This work is intended to underline how the most-advanced experimental and theoretical
physical chemistry tools must be used synergistically to understand the reactivity of Ti …

Photochemical and FT-IR probing of the active site of hydrogen peroxide in Ti silicalite sieve

W Lin, H Frei - Journal of the American Chemical Society, 2002 - ACS Publications
Upon loading of aqueous hydrogen peroxide into Ti silicalite sieve and removal of the
solvent by evacuation, a thermally stable hydroperoxo species was detected by infrared …

Quantitative structural determination of active sites from in situ and operando XANES spectra: From standard ab initio simulations to chemometric and machine …

AA Guda, SA Guda, KA Lomachenko, MA Soldatov… - Catalysis Today, 2019 - Elsevier
In the last decade the appearance of progressively more sophisticated codes, together with
the increased computational capabilities, has made XANES a spectroscopic technique able …

Uniform catalytic site in Sn-β-Zeolite determined using x-ray absorption fine structure

SR Bare, SD Kelly, W Sinkler, JJ Low… - Journal of the …, 2005 - ACS Publications
The Sn silicate zeolite, Sn-β, has been shown to be an efficient, selective heterogeneous
catalyst for Baeyer− Villiger oxidations. Using primarily a multishell fit to extended X-ray …