Trifunctional catalysts for conversion of syngas to alcohols: Twelfth quarterly report for period June 1, 1987 to August 31, 1987
Technical Report
·
OSTI ID:5988202
A methodology for preparing NMR samples was developed. In this method the sample is first treated in the cell and is transferred directly into the NMR sample holder. Preliminary NMR results show the presence of various absorbed CO species on Rh/Al/sub 2/O/sub 3/. The absence of a NMR signal from adsorbed CO on Rh-Mo/Al/sub 2/O/sub 3/ is attributed to the presence pf paramagnetic Mo(+5) species. An order of magnitude analysis shows that the minimum distance between Mo(+5) and /sup 13/CO is of the order of 5 A. This short distance makes possible diffusion of chemical intermediates and further corroborates a dual-site mechanism. Ion scattering spectra show evidence for an increase in aggregation of molybdena in the presence of rhodium. Oxygen intensity ratio from ISS studies is found to be good indicator for molybdena dispersion. X-ray Diffraction studies of air calcined, reduced catalysts do not show any detectable rhodium, molybdenum, rhodium oxide, any molybdenum oxide, or Mo-Rh/sub 2/O/sub 6/ in Rh-Mo/Al/sub 2/O/sub 3/ system. 3 refs., 7 figs.
- Research Organization:
- Delaware Univ., Newark (USA). Center for Catalytic Science and Technology
- DOE Contract Number:
- FG22-84PC70780
- OSTI ID:
- 5988202
- Report Number(s):
- DOE/PC/70780-T8; ON: DE88000055
- Country of Publication:
- United States
- Language:
- English
Similar Records
Trifunctional catalysts for conversion of syngas to alcohols: Eleventh quarterly report for period March 1, 1987 to May 31, 1987
Trifunctional catalysts for conversion of syngas to alcohols: Tenth quarterly report for period December 1, 1986 to February 28, 1987. [CO chemisorbed on rhodium/alumina catalysts - one series modified by molybdena and the other by sodium addition]
Trifunctional catalysts for conversion of syngas to alcohols. Seventh quarterly report, March 1-May 31, 1986. [CO chemisorbed on Rh/Al/sub 2/O/sub 3/]
Technical Report
·
Thu Jun 25 00:00:00 EDT 1987
·
OSTI ID:6430206
Trifunctional catalysts for conversion of syngas to alcohols: Tenth quarterly report for period December 1, 1986 to February 28, 1987. [CO chemisorbed on rhodium/alumina catalysts - one series modified by molybdena and the other by sodium addition]
Technical Report
·
Tue Mar 24 23:00:00 EST 1987
·
OSTI ID:6741622
Trifunctional catalysts for conversion of syngas to alcohols. Seventh quarterly report, March 1-May 31, 1986. [CO chemisorbed on Rh/Al/sub 2/O/sub 3/]
Technical Report
·
Mon Jun 09 00:00:00 EDT 1986
·
OSTI ID:5619445
Related Subjects
090221* -- Alcohol Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ADSORPTION
ALCOHOLS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL PREPARATION
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
FLUIDS
GASES
HYDROXY COMPOUNDS
ION SCATTERING ANALYSIS
MAGNETIC RESONANCE
METALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NONDESTRUCTIVE ANALYSIS
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REACTION INTERMEDIATES
REFRACTORY METAL COMPOUNDS
RESONANCE
RHODIUM
SAMPLE PREPARATION
SAMPLING
SCATTERING
SORPTION
SYNTHESIS
SYNTHESIS GAS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY DIFFRACTION
10 SYNTHETIC FUELS
ADSORPTION
ALCOHOLS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL PREPARATION
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
FLUIDS
GASES
HYDROXY COMPOUNDS
ION SCATTERING ANALYSIS
MAGNETIC RESONANCE
METALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NONDESTRUCTIVE ANALYSIS
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REACTION INTERMEDIATES
REFRACTORY METAL COMPOUNDS
RESONANCE
RHODIUM
SAMPLE PREPARATION
SAMPLING
SCATTERING
SORPTION
SYNTHESIS
SYNTHESIS GAS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY DIFFRACTION