Non‐oxidative Coupling of Methane to Ethylene Using Mo2C/[B]ZSM‐5
Abstract
Methane non‐oxidative coupling to ethylene was investigated on Mo2C/[B]ZSM‐5 catalyst at 923 K and atmospheric pressure. In contrast to Mo2C/[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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 05, 2018
- Source ID
- 10.1002/cphc.201701001
Entities
People
- Edward P. Schreiner
- Huibo Sheng
- Raul F. Lobo
- Weiqing Zheng
Organizations
- Air Force Office of Scientific Research
- University of Delaware