Development of improved iron Fischer-Tropsch catalysts. [Iron catalyst with nominal composition 100Fe/0. 3Cu/0. 8K]

Technical Report · Fri Apr 24 00:00:00 EDT 1992

DOI:https://doi.org/10.2172/7275042· OSTI ID:7275042

Bukur, D B

Three tests (two fixed bed and one stirred tank slurry reactor) were completed during the reporting period. Also, the work on catalyst characterization by different techniques (atomic absorption, BET surface area and pore size distribution and x-ray powder diffraction).The performance of a precipitated iron catalyst with nominal composition lOOFe/0.3Cu/0.8K has been evaluated in two fixed bed reactor tests designated FB-0142 and FB-0352 following pretreatment with syngas (H{sub 2}/CO=0.67) at 280{degree}C, 3Nl/g-cat/h and atomspheric pressure for 8 hours. Flow interruption occurred in the first test (FB-0142) at about 72h on stream, and the second test (FB-0352) was to assess any potential adverse effects of this flow interruption on performance of the catalyst. The catalyst was tested at 250{degree}C, 200 psig, 2Nl/g-cat/h using syngas of the same composition as that employed during the pretreatment. Initial conversions in both tests were high (about 84%) but the catalyst deactivated fairly rapidly. The (H{sub 2} + CO) conversion at the end of the first test (120h on stream) was about 52%, whereas the syngas conversion at the end of the second test (150h) was about 55%, indicating that the brief flow interruption during test FB-0142 had resulted in higher deactivation rate. Hydrocarbon selectivities in both tests were similar and their average values werr: (CH{sub 4})=4.7, (C{sub 2}{minus}C{sub 4})=19.5, (C{sub 5}{minus}C{sub 11})=25.3 and C{sub 12}{sup +}=50.5 wt%.

• Research Organization: Texas A and M Univ., College Station, TX (United States). Dept. of Chemical Engineering
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-89PC89868
• OSTI ID: 7275042
• Report Number(s): DOE/PC/89868-10; ON: DE92017966
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
PERFORMANCE TESTING
FISCHER-TROPSCH SYNTHESIS
IRON
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMICAL REACTORS
COPPER
EXPERIMENTAL DATA
HYDROCARBONS
MEDIUM PRESSURE
POTASSIUM
PROGRESS REPORT
SPECIFICITY
SYNTHESIS
SYNTHESIS GAS
TEMPERATURE RANGE 0400-1000 K
ALKALI METALS
CHEMICAL REACTIONS
DATA
DOCUMENT TYPES
ELEMENTS
FLUIDS
GASES
INFORMATION
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
TEMPERATURE RANGE
TESTING
TRANSITION ELEMENTS
010408* - Coal
Lignite
& Peat- C1 Processes- (1987-)
400201 - Chemical & Physicochemical Properties