Novel approaches to the production of higher alcohols from synthesis gas. Quarterly Technical progress report No. 8, July 1, 1992--September 30, 1992 Page: 12 of 19
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Table 1
Syngas Conversion to Oxygenates on Promoted Rh/A1203 Catalysts3
Catalyst Yield (based on carbon efficiency) Alcohol
Conversion Hydrocarbons Oxygenates6 to Aldehyde
(#) Composition %CO C1 C2 C1 C2 Ratio
IMPREGNATED CATALYSTS1, 2 [Rh(N036), Nb(HC204)7 precursors]
(1) 1%Rh/A1203 2.0 62 27 6 5 0.88
(2) 1%Rh/3%Nb/A203 3.9 60 27 1 12 0.12
CLUSTER-DERIVED CATALYSTS1, 2 [Rh4(CO)12, Nb(HC204)7 precursors]
(3) 1%Rh/A1203 2.2 62 13 8 17 0.40
(4) 1%Rh/3%Nb/Al203 4.2 61 21 2 16 0.14
MIXED-TECHNIQUE CATALYSTS1,2 [Rh(NO3)6, Mo(CO)6, W(CO)6 precursors]
(5) Mo/i %Rh/A12034 3.6 53 14 8 25 0.63
(6) W/1%Rh/A12035 2.2 64 17 2 17 0.48
Notes:
1 Details of catalyst preparation procedures are given in Appendix B.
2 Pretreatment conditions: Heated at 5OC/min to 2000C in 50 cc/min of He and held at
this condition for 1 hr. In addition, Catalysts 1, 2, 5, and 6 were reduced at 4000C in H2
for 1 hr. Pressurized and heated to reaction temperature under reaction gases.
3 Testing conditions: 30 atm, 250*C, 9000 1/kg/hr GHSV, H2:CO=2, 0.5 gr. of catalyst.
4 Catalyst contained approximately 0.1 wt% Mo.
5 Catalyst contained approximately 1 wt% W.
6 In the July through September Monthly Reports, some C1 oxygenates, mainly
formaldehyde, were mistakenly counted as C2oxygenates. This error has been
corrected in this table. Further minor changes in some numbers are due to averaging
from repeat runs.
11QTECHO8
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Roberts, G. & Kow, S. Novel approaches to the production of higher alcohols from synthesis gas. Quarterly Technical progress report No. 8, July 1, 1992--September 30, 1992, report, April 14, 1993; Raleigh, North Carolina. (https://digital.library.unt.edu/ark:/67531/metadc1387513/m1/12/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.