Selective methane oxidation over promoted oxide catalysts. Quarterly report, June--August 1994

Technical Report · Thu Sep 01 04:00:00 EDT 1994

OSTI ID:10105320

Klier, K; Herman, R G; Shi, C; Sun, Q

In the past quarter, progress has been made in the direct conversion of methane to methanol over promoted metal oxides catalysts using a double-layered catalyst bed reactor configuration with steam as cofeed. Research concentrated on finding a second layer catalyst that could efficiently trap methyl radicals and produce methanol. A variety of metal oxides have been explored, and the highest methanol yield, nearly 100 g/kg cat {times} hr along with other products including formaldehyde and C{sub 2} hydrocarbons, was obtained over 1% V{sub 2}O{sub 5}/SiO{sub 2} as the second bed catalyst at 600 C with CH{sub 4}/air/steam mixture and at a CH{sub 4}-to-air ratio of 1.5 and a GHSV of 72,000 l/kg cat {times} hr. Experiments were carried out to study the effects of total flow rate and bed size on the production of oxygenates. Increasing the total flow rates increased the space time yield (STY) of both methanol and formaldehyde, while at the same time the level of methane conversion was reduced. This effectively shifted the selectivity toward oxygenates and provided useful information for future reactor design. Experiments showed that the cofeed of steam with the reagent mixture was not only beneficial but also necessary for the production of methanol, particular when the ability of the second bed to activate methane was small.

• Research Organization: Lehigh Univ., Bethlehem, PA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG21-92MC29228
• OSTI ID: 10105320
• Report Number(s): DOE/MC/29228--3936; ON: DE95000029; BR: AB0530150/AB0550000
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030400
10 SYNTHETIC FUELS
100200
CALCIUM OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHROMIUM OXIDES
ETHYLENE
EXPERIMENTAL DATA
IRON OXIDES
MAGNESIUM OXIDES
MANGANESE OXIDES
MATERIALS TESTING
METHANE
METHANOL
MOLYBDENUM OXIDES
OXIDATION
PARAMETRIC ANALYSIS
PRODUCTION
PRODUCTS AND BY-PRODUCTS
PROGRESS REPORT
RHENIUM OXIDES
SILICON OXIDES
STRONTIUM OXIDES
SYNTHESIS
VANADIUM OXIDES
YTTRIUM OXIDES
ZIRCONIUM OXIDES