Recent developments in X-ray diffraction/scattering computed tomography for materials science

NE Omori, AD Bobitan… - … of the Royal …, 2023 - royalsocietypublishing.org
X-ray diffraction/scattering computed tomography (XDS-CT) methods are a non-destructive
class of chemical imaging techniques that have the capacity to provide reconstructions of …

Oxidative coupling of methane (OCM): An overview of the challenges and opportunities for developing new technologies

CA Ortiz-Bravo, CA Chagas, FS Toniolo - Journal of Natural Gas Science …, 2021 - Elsevier
This review discusses the thermodynamic and kinetic limitations that currently make the
oxidative coupling of methane (OCM) industrially inviable. We analyze some promising …

Optimizing hierarchical membrane/catalyst systems for oxidative coupling of methane using additive manufacturing

J Wortman, VO Igenegbai, R Almallahi… - Nature Materials, 2023 - nature.com
The advantage of a membrane/catalyst system in the oxidative coupling of methane
compared with conventional reactive systems is that by introducing oxygen into the catalytic …

New Mechanistic and Reaction Pathway Insights for Oxidative Coupling of Methane (OCM) over Supported Na2WO4/SiO2 Catalysts

S Sourav, Y Wang, D Kiani, J Baltrusaitis… - Angewandte Chemie …, 2021 - Wiley Online Library
The complex structure of the catalytic active phase, and surface‐gas reaction networks have
hindered understanding of the oxidative coupling of methane (OCM) reaction mechanism by …

The Role of Adsorbed and Lattice Oxygen Species in Product Formation in the Oxidative Coupling of Methane over M2WO4/SiO2 (M = Na, K, Rb, Cs)

A Zanina, VA Kondratenko, H Lund, J Li, J Chen… - ACS …, 2022 - ACS Publications
MnO x–Na2WO4/SiO2 is one of the best-performing catalysts in the oxidative coupling of
methane (OCM) to C2 hydrocarbons (C2H6 and C2H4). The current mechanistic concepts …

[HTML][HTML] A deep convolutional neural network for real-time full profile analysis of big powder diffraction data

H Dong, KT Butler, D Matras, SWT Price… - NPJ Computational …, 2021 - nature.com
Abstract We present Parameter Quantification Network (PQ-Net), a regression deep
convolutional neural network providing quantitative analysis of powder X-ray diffraction …

Resolving the Types and Origin of Active Oxygen Species Present in Supported Mn-Na2WO4/SiO2 Catalysts for Oxidative Coupling of Methane

S Sourav, Y Wang, D Kiani, J Baltrusaitis… - ACS …, 2021 - ACS Publications
The involvement of lattice oxygen species is important toward oxidative coupling of the
methane reaction (OCM) over supported Mn-Na2WO4/SiO2 catalysts, but there is no …

[HTML][HTML] Elucidating the structure of the W and Mn sites on the Mn-Na2WO4/SiO2 catalyst for the oxidative coupling of methane (OCM) at real reaction temperatures

CA Ortiz-Bravo, SJA Figueroa, R Portela, CA Chagas… - Journal of …, 2022 - Elsevier
The performance of the Mn-Na 2 WO 4/SiO 2 catalyst for oxidative coupling of methane
(OCM) has been ascribed to crystalline phases that are not present at reaction temperatures …

Deciphering the Mechanistic Role of Individual Oxide Phases and Their Combinations in Supported Mn–Na2WO4 Catalysts for Oxidative Coupling of Methane

Y Wang, S Sourav, JP Malizia, B Thompson… - ACS …, 2022 - ACS Publications
Oxidative coupling of methane (OCM) is an attractive direct route for upgrading methane to
valuable chemicals. In this study, temporal analysis of products (TAP) and steady-state …

Elucidating the Effects of Mn Promotion on SiO2-Supported Na-Promoted Tungsten Oxide Catalysts for Oxidative Coupling of Methane (OCM)

D Kiani, S Sourav, J Baltrusaitis, IE Wachs - ACS Catalysis, 2021 - ACS Publications
Molecular-level understanding of the structure–activity relationships for oxidative coupling of
methane (OCM) by the supported Mn2O3–Na2WO4/SiO2 (also written as Mn-Na-WOx/SiO2) …