4.8 Article

Lithium Promotes Acetylide Formation on MgO During Methane Coupling Under Non-Oxidative Conditions

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Role and dynamics of transition metal carbides in methane coupling

Seraphine B. X. Y. Zhang et al.

Summary: Transition metal carbides, such as Mo and W carbides, exhibit excellent properties in terms of hardness, thermal stability, and conductivity, making them popular in catalytic applications. This study reveals the active involvement of carbidic carbon in the formation of C-2 products during methane coupling at high temperature, highlighting the importance of carbon diffusivity and exchange capability on catalyst performance. Mo carbide (Mo2C) shows stable C-2 selectivity over time due to fast carbon diffusion dynamics, while W carbide (WC) exhibits loss of selectivity due to slow diffusion. Overall, this study provides evidence for a Mars-Van Krevelen type mechanism in the non-oxidative coupling of methane.

CHEMICAL SCIENCE (2023)

Article Energy & Fuels

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

Carlos A. Ortiz-Bravo et al.

Summary: This review discusses the thermodynamic and kinetic limitations hindering the industrial feasibility of the oxidative coupling of methane (OCM). It analyzes strategies to overcome these limitations and introduces crucial aspects in improving OCM catalysts. The focus is on the current understanding of catalyst like Mn-Na2WO4/SiO2 and the exploration of membrane reactors and monolith-supported catalysts as engineering solutions to manage thermal and kinetic issues in OCM.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2021)

Article Chemistry, Multidisciplinary

Direct Evidence on the Mechanism of Methane Conversion under Non-oxidative Conditions over Iron-modified Silica: The Role of Propargyl Radicals Unveiled

Allen Puente-Urbina et al.

Summary: The study used operando photoelectron photoion coincidence spectroscopy to unravel the elusive C2+ radical intermediates involved in the gas-phase reaction network. Different radical species were identified, allowing for stepwise growth of hydrocarbon chains, with propargyl radicals identified as essential precursors for aromatic formation. These results provide insights relevant for the development of methane valorization processes.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Agricultural Engineering

The economics of renewable CaC2 and C2H2 production from biomass and CaO

A. Paakkonen et al.

BIOMASS & BIOENERGY (2019)

Review Chemistry, Physical

Enhancing Important Fluctuations: Rare Events and Metadynamics from a Conceptual Viewpoint

Omar Valsson et al.

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, VOL 67 (2016)

Review Chemistry, Multidisciplinary

Calcium Carbide: A Unique Reagent for Organic Synthesis and Nanotechnology

Konstantin S. Rodygin et al.

CHEMISTRY-AN ASIAN JOURNAL (2016)

Article Chemistry, Physical

NMR Spectral Parameters in Graphene, Graphite, and Related Materials: Ab Initio Calculations and Experimental Results

Fabio A. L. de Souza et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2016)

Article Chemistry, Multidisciplinary

Sites for Methane Activation on Lithium-Doped Magnesium Oxide Surfaces

Karolina Kwapien et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2014)

Article Multidisciplinary Sciences

Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen

Xiaoguang Guo et al.

SCIENCE (2014)

Article Chemistry, Multidisciplinary

Synthesis of Functional Acetylene Derivatives from Calcium Carbide

Zhewang Lin et al.

CHEMSUSCHEM (2012)

Article Chemistry, Physical

A Critical Assessment of Li/MgO-Based Catalysts for the Oxidative Coupling of Methane

Sebastian Arndt et al.

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING (2011)

Review Chemistry, Physical

Morphology and Microstructure of Li/MgO Catalysts for the Oxidative Coupling of Methane

Ulyana Zavyalova et al.

CHEMCATCHEM (2011)

Review Chemistry, Multidisciplinary

Metadynamics

Alessandro Barducci et al.

WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE (2011)

Article Chemistry, Physical

Temperature-Dependent Morphology, Magnetic and Optical Properties of Li-Doped MgO

Philipp Myrach et al.

CHEMCATCHEM (2010)

Review Chemistry, Multidisciplinary

C-H Bond Activation and Organometallic Intermediates on Isolated Metal Centers on Oxide Surfaces

Christophe Coperet

CHEMICAL REVIEWS (2010)

Article Physics, Multidisciplinary

Realization of quantum walks with negligible decoherence in waveguide lattices

Hagai B. Perets et al.

PHYSICAL REVIEW LETTERS (2008)

Review Physics, Multidisciplinary

Metadynamics: a method to simulate rare events and reconstruct the free energy in biophysics, chemistry and material science

Alessandro Laio et al.

REPORTS ON PROGRESS IN PHYSICS (2008)

Article Chemistry, Physical

Effect of the specific surface area of Li/MgO catalysts in the oxidative coupling of methane

Yunfei Kuo et al.

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS (2007)

Review Chemistry, Inorganic & Nuclear

Binary and ternary carbides of alkali and alkaline-earth metals

U Ruschewitz

COORDINATION CHEMISTRY REVIEWS (2003)