Ci oxidative coupling via bromine activation and tandem catalytic condensation and neutralization over CaO/zeolite composites II. Product distribution variation and full bromine confinement

Lorkovic I.M., Noy M.L., Schenck W.A., Belon C., Weiss M., Sun S., Sherman J.H., McFarland E.W., Stucky G.D. and Ford P.C. (2004). Ci oxidative coupling via bromine activation and tandem catalytic condensation and neutralization over CaO/zeolite composites II. Product distribution variation and full bromine confinement. In: Symposium on Utilization of Greenhouse Gases held at the 227th National Meeting of the American-Chemical-Society, Anaheim Ca, (589-594). Mar 27-Apr 01, 2004. doi:10.1016/j.cattod.2004.09.013


Author Lorkovic I.M.
Noy M.L.
Schenck W.A.
Belon C.
Weiss M.
Sun S.
Sherman J.H.
McFarland E.W.
Stucky G.D.
Ford P.C.
Title of paper Ci oxidative coupling via bromine activation and tandem catalytic condensation and neutralization over CaO/zeolite composites II. Product distribution variation and full bromine confinement
Conference name Symposium on Utilization of Greenhouse Gases held at the 227th National Meeting of the American-Chemical-Society
Conference location Anaheim Ca
Conference dates Mar 27-Apr 01, 2004
Journal name Catalysis Today   Check publisher's open access policy
Publication Year 2004
Sub-type Fully published paper
DOI 10.1016/j.cattod.2004.09.013
Open Access Status Not Open Access
ISSN 0920-5861
Volume 98
Issue 4
Start page 589
End page 594
Total pages 6
Language eng
Abstract/Summary We describe a three-step bromine-mediated process for oxidative coupling of methane using O2 as oxidant. In the first step, a supported metal bromide solid is treated with O2 to generate Br2 and supported metal oxide. The Br2 thus formed reacts with excess CH 4, giving a mixture of CH4, bromomethanes, and HBr. This mixture is passed over a CaO/zeolite composite which condenses bromocarbons with 100% conversion to products, and neutralizes HBr to reform the metal bromide. The resulting product contains higher hydrocarbons, excess CH4, and water. Once the HBr neutralizing capacity of the CaO is spent, the supported CaBr2/ZSM-5 may also serve as catalyst for methyl bromide coupling. The effect of temperature, pressure, and reaction time on the intermediate methane bromination as well as on the overall partial oxidation product distribution is discussed. Incorporation of this scheme into a reactor into which only methane and O2 are fed is described.
Subjects 1503 Business and Management
1508 Process Chemistry and Technology
Keyword Bromine-mediated
CaO/zeolite
Methane activation
Oxidative coupling
Tandem catalytic condensation
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
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