Improved Fischer-Tropsch synthesis catalysts for indirect coal liquefaction: Quarterly technical progress report No. 5 for the period 1 October to 31 December 1986

Technical Report · Fri Apr 17 04:00:00 EDT 1987

OSTI ID:6524910

Tong, G T; Wilson, R B; McCarty, J G

Surface-confined ruthenium cluster catalysts have been prepared with alumina, Y-zeolite, and molecular sieve supports. The Al-Ru/sub 4/ and Al-Ru/sub 6/ hydridocarbonyl cluster complexes previously used to prepare alumina-supported cluster catalysts were used in similar surface-confining reactions with sodium Y-zeolite and molecular sieve zeolite supports. Infrared (FTIR) spectra, gas evolution, and elemental analysis were used to follow the surface-confining reaction. In all cases, the confined complexes of Al-Ru/sub 4/ and Al-Ru/sub 6/ had the composition -O-Al(C/sub 2/H/sub 5/)((H)Ru/sub 4/(CO)/sub 12/) and -O-Al(C/sub 2/H/sub 5/)((H)Ru/sub 6/(CO)/sub 18/), respectively. Monomeric ruthenium catalysts have also been prepared for all three supports by surface confining reactions with the complex (allyl)/sub 2/Ru(CO)/sub 2/. The support material has been shown to alter the inherent activity and selectivity of ruthenium Fischer-Tropsch synthesis (FTS) catalysts, and it may affect the stability of the ruthenium clusters during activation and FTS reaction. The series of Ru cluster catalysts ranges from one, four, and six atoms confined on surfaces of three supports with variable acidity and porosity, beta alumina, sodium Y-zeolite, and molecular sieve zeolite. These catalysts will be tested for FTS activity and selectivity for syn gas with H/sub 2//CO = 1.0 at 1 atm using a hot wax trap to determine if a catalyst shows a decline in the Schultz-Flory Anderson product distribution above decane. A potassium and copper doubly-promoted precipitated iron catalyst was prepared for evaluation of the effect of sulfur treatment on the methane selectivity and olefin-to-paraffin ratio of light hydrocarbons. 9 refs.

• Research Organization: SRI International, Menlo Park, CA (USA)
• DOE Contract Number: AC22-85PC80016
• OSTI ID: 6524910
• Report Number(s): DOE/PC/80016-T3; ON: DE87010705
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ADSORBENTS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHROMATOGRAPHY
ELEMENTS
FISCHER-TROPSCH SYNTHESIS
FOURIER TRANSFORMATION
GAS CHROMATOGRAPHY
INFRARED SPECTRA
INORGANIC ION EXCHANGERS
INTEGRAL TRANSFORMATIONS
ION EXCHANGE MATERIALS
MAGNETIC RESONANCE
MATERIALS
METALS
MINERALS
MOLECULAR SIEVES
NUCLEAR MAGNETIC RESONANCE
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PLATINUM METALS
PROMOTERS
RESONANCE
RUTHENIUM
SEPARATION PROCESSES
SPECIFICITY
SPECTRA
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS
TESTING
TRANSFORMATIONS
TRANSITION ELEMENTS
ZEOLITES