Methane oxidation over dual redox catalysts. Quarterly technical progress report, April--June 1989

Technical Report · Thu Jun 01 00:00:00 EDT 1989

DOI:https://doi.org/10.2172/10161700· OSTI ID:10161700

Klier, K; Herman, R G; Sojka, Z

The objective of this research is to develop the scientific background for direct catalytic oxidation of methane over oxides that are doubly doped with transition metal ions. The desired process aims at employing of a double redox mechanism, where one redox couple is utilized for activation of oxygen and another for the conversion of CH{sub 3} radicals to carbocations via electron transfer reaction. The latter species can react with surface OH{sup {minus}} groups to form methanol or formaldehyde. To establish the foundations for such a process, two groups of the catalysts, one containing dispersed redox centers (Cu{sup I}/Fe{sup III}/ZnO and Cu{sup I}/Sn{sup IV}/ZnO) and a second of delafossite-type oxides containing concentrated redox centers (CuFeO{sub 2}, CuCoO{sub 2}) were synthesized and chemically analyzed for composition. For the sake of comparison, undoped ZnO treated in the same way as doped zinc oxide catalysts was also prepared. The samples were characterized by X-ray diffraction, BET surface area measurements and preliminarily by scanning electron microscopy. A catalytic testing unit and reactor to study the title reaction were designed and constructed.

• Research Organization: Lehigh Univ., Bethlehem, PA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG21-89MC26039
• OSTI ID: 10161700
• Report Number(s): DOE/MC/26039-2; ON: DE92017579
• Resource Relation: Other Information: PBD: Jun 1989
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
METHANE
OXIDATION
CATALYSTS
TRANSITION ELEMENT COMPOUNDS
CHEMICAL PREPARATION
PROGRESS REPORT
CATALYTIC EFFECTS
METHYL RADICALS
METHANOL
SYNTHESIS
FORMALDEHYDE
CHEMICAL REACTORS
FABRICATION
010408
400201
C1 PROCESSES
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES