title: Hydrogen-Permeable Tubular Membrane Reactor: Promoting Conversion and Product Selectivity for Non-Oxidative Activation of Methane over an Fe©SiO2Catalyst.
abstract: Non-oxidative methane conversion over Fe©SiO2catalyst was studied for the first time in a hydrogen (H2) permeable tubular membrane reactor. The membrane reactor is composed of a mixed ionic-electronic SrCe0.7Zr0.2Eu0.1O3-δthin film (≈20 μm) supported on the outer surface of a one-end capped porous SrCe0.8Zr0.2O3-δtube. Significant improvement in CH4conversion was achieved upon H2removal from the membrane reactor compared to that in a fixed-bed reactor. The Fe©SiO2catalyst in the H2permeable membrane reactor demonstrated a stable ≈30 % C2+single-pass yield, with up to 30 % CH4conversion and 99 % selectivity to C2(ethylene and acetylene) and aromatic (benzene and naphthalene) products, at the tested conditions. The selectivity towards C2or aromatics was manipulated purposely by adding H2into or removing H2from the membrane reactor feed and permeate gas streams.
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA.
authors.forename: Mann
authors.initials: M
authors.lastname: Sakbodin
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA.
authors.forename: Yiqing
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA.
authors.forename: Su Cheun
authors.initials: SC
authors.lastname: Oh
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA.|University of Maryland Energy Research Center, University of Maryland, College Park, MD, 20742, USA.
authors.forename: Eric D
authors.initials: ED
authors.lastname: Wachsman
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20742, USA.|University of Maryland Energy Research Center, University of Maryland, College Park, MD, 20742, USA.
authors.forename: Dongxia
authors.initials: D
authors.lastname: Liu
keywords: Fe©SiO2; SrCe0.7Zr0.2Eu0.1O3−δ; membrane reactor; natural gas; non-oxidative methane conversion