Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report 8, January--March, 1995

Technical Report · Thu May 25 04:00:00 EDT 1995

DOI:https://doi.org/10.2172/113903· OSTI ID:113903

McCormick, R L

Activities during this quarter focused on fine tuning of catalyst characterization and synthesis techniques. Improvements in catalyst activity test methods were also implemented but more remains to be done. Specific accomplishments include: improved characterization of vanadyl pyrophosphate (VPO) and Si promoted VPO by FTIR and FTIR of chemisorbed bases; several minor improvements in catalyst preparation technique resulting in enhanced catalyst yield, better control of catalyst composition, and generation of less waste; preliminary pulsed reaction data on methane oxidation were also acquired. Preliminary activity measurements for methane conversion (without oxygen) in a pulsed reactor over VPO indicate that the primary reaction product is CO. Carbon dioxide is also formed but selectivity to CO{sub 2} decreases with number of pulses. These results suggest that selectivity to partially oxidized products improves with catalyst reduction and suggest that some surface modification will be required to obtain oxidized hydrocarbon products. Note that catalyst activation (conversion from the precursor to VPO) has been carried out using air. For butane oxidation catalysts VPO is activated in a 1% butane/air mixture which produces a slightly reduced catalyst.

• Research Organization: Colorado School of Mines, Golden, CO (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-92PC92110
• OSTI ID: 113903
• Report Number(s): DOE/PC/92110--T9; ON: DE96000928
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
10 SYNTHETIC FUELS
ABSORPTION SPECTROSCOPY
CARBON MONOXIDE
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMISORPTION
INFRARED RADIATION
METHANE
METHANOL
OXIDATION
PERFORMANCE TESTING
PROGRESS REPORT
PROMOTERS
PYRIDINE
PYROPHOSPHATES
SILICON
SYNTHESIS
VANADIUM COMPOUNDS
X-RAY DIFFRACTION