Supported Ru-Mo catalysts for syngas reaction to oxygenates

Journal Article · Tue Sep 01 00:00:00 EDT 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90140-D· OSTI ID:7148230

Juan, A ^[1]; Damiani, D E ^[2]

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1. Univ. Nacional del Sur, Bahia Blanca (Argentina)
2. Plapiqui UNS-CONICET, Bahia Blanca (Argentina)

Despite numerous reports on the activity and selectivity of modified Ru catalysts on the synthesis of oxygenates from syngas, not many papers have appeared on their characterization. The goal of the research here reported is to provide more information regarding these catalysts. Temperature programmed reduction (TPR), temperature programmed desorption (TPD), temperature programmed surface reaction (TPSR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) results, H{sub 2} and CO chemisorption uptakes, as well as activity and selectivity for the CO + H{sub 2} reaction and Cl{sup {minus}} evolution studies on RuMo catalysts are given here. The catalysts, prepared by co-impregnation of SiO{sub 2} with RuCl{sub 3} {center dot} 1 {center dot} 5H{sub 2}O and (NH{sub 4}){sub 6}Mo{sub 7}O{sub 24} {center dot} 4H{sub 2}O, were pretreated according to two different procedures: (I) oxidation at 673 K followed by reduction at 673 K or (II) reduction at 673 K. Pretreatment II eliminates all residual Cl{sup {minus}}. Pretreatment I on the other hand results in higher final Cl{sup {minus}} contents in the catalysts and renders them more selective to oxygenates. The results are interpreted in terms of the existence of Ru-Mo contacts which are necessary for ethanol production and Cl{sup {minus}} -containing Ru sites responsible for methanol production.

• OSTI ID: 7148230
• Journal Information: Journal of Catalysis; (United States), Vol. 137:1; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
01 COAL, LIGNITE, AND PEAT
03 NATURAL GAS
CARBON MONOXIDE
METHANATION
ETHANOL
SYNTHESIS
METHANOL
MOLYBDENUM
CATALYTIC EFFECTS
RUTHENIUM
CATALYST SUPPORTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMISORPTION
CHLORIDES
COAL GAS
DESORPTION
HYDROGEN
IMPREGNATION
NATURAL GAS
OXIDATION
PHOTOELECTRON SPECTROSCOPY
REDUCTION
SILICON OXIDES
SYNTHESIS GAS
TEMPERATURE CONTROL
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
ALCOHOLS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
CONTROL
DIFFRACTION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HALIDES
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
METALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
PYROLYSIS PRODUCTS
SCATTERING
SEPARATION PROCESSES
SILICON COMPOUNDS
SORPTION
SPECTROSCOPY
TRANSITION ELEMENTS
100200* - Synthetic Fuels- Production- (1990-)
010408 - Coal
Lignite
& Peat- C1 Processes- (1987-)
030300 - Natural Gas- Drilling
Production
& Processing