NDLI: Sol–Gel Preparation of Samaria Catalysts for the Oxidative Coupling of Methane

Content Provider	Springer Nature Link
Author	Neumann, Björn Elkins, Trenton W. Gash, Alexander E. Hagelin Weaver, Helena Bäumer, Marcus
Copyright Year	2015
Abstract	A new sol–gel synthesis route for alumina–samaria mixed aero- and xerogel catalysts based on the so-called epoxide addition method and the use of these systems as catalysts for the oxidative coupling of methane (OCM) is reported. As precursors simple chloride or nitrate salts can be used. The mesoporous materials are X-ray amorphous even after calcination to 800 °C and show an intimate mixing of Al and Sm on the nanoscale. In the case of the xerogels derived from chlorides, C2 yields comparable to pure samaria can be achieved under OCM reaction conditions with 100 % O2 conversion. Even at lower O2 conversions the activity of the xerogel is competitive with a pure samaria reference catalyst taking the lower samaria content of 20 % into account. Accordingly, the approach is suitable to reduce the costs associated with the rare earth oxide. In addition to the preparation of aerogel and xerogel particles, the presented synthesis also allows the fabrication of xerogel films which can be coated on a suitable (monolithic) support. First results of such films are presented.
Starting Page	1251
Ending Page	1261
Page Count	11
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	145
Issue Number	6
e-ISSN	1572879X
Language	English
Publisher	Springer US
Publisher Date	2015-05-06
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Oxidative methane coupling Sol–gel chemistry Rare earth oxide catalyst Catalysis Industrial Chemistry/Chemical Engineering Organometallic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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