Non-oxidative Coupling of Methane to Ethylene Using Mo2 C/[B]ZSM-5
Huibo Sheng1, Edward P Schreiner1, Weiqing Zheng1
1Center for Catalysis Science and Technology, Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, DE, 19716, USA.
Abstract:
Methane non-oxidative coupling to ethylene was investigated on Mo2 C/[B]ZSM-5 catalyst at 923 K and atmospheric pressure. In contrast to Mo2 C/[Al]ZSM-5 catalysts for methane aromatization, this material exhibits very high ethylene selectivity (>90 %) and low aromatics (benzene and naphthalene) selectivity. The much weaker Brønsted acidity of [B]ZSM-5 leads to a slow rate of ethylene oligomerization. The stability of the catalyst is greatly enhanced with 93 % of the initial reaction rate remaining after 18 h of time on stream. In-situ UV/VIS spectra indicate that prior to carburization, mono/binuclear Mo oxides are initially well dispersed onto the zeolite support. Mo carbides clusters, formed during carburization with methane, appear similar to clusters formed in [Al]ZSM-5, as indicated by the X-ray Absorption Spectroscopy (XAS) data.
Related Concept Videos
Cycloaddition Reactions: MO Requirements for Photochemical Activation
Carboxylic Acids to Methylesters: Alkylation using Diazomethane
Spin–Spin Coupling Constant: Overview
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation
Cycloaddition Reactions: MO Requirements for Thermal Activation
Alkenes via Reductive Coupling of Aldehydes or Ketones: McMurry Reaction
![Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F51444.jpg&w=3840&q=50)

