A kinetic study of methanol synthesis in a slurry reactor using a CuO/ZnO/Al sub 2 O sub 3 catalyst [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description:
- Pages: (107 pages) : digital, PDF file
- Additional Creators:
- United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- A kinetic model that describes the methanol production rate over a CuO/ZnO/AI₂0₃ catalyst (United Catalyst L-951) at typical industrial operating conditions is developed using a slurry reactor. Different experiments are conducted in which the H₂/(CO+CO₂) ratio is equal to 2, 1, and 0.5, respectively, while the CO/CO₂ ratio is held constant at 9. At each H₂/(CO+CO₂) ratio the space velocity is set at four different values in the range of 3000-13,000 1/hr kg{sub cat}. The effect of H₂/(CO+CO₂) ratio and space velocity on methanol production rate, conversions, and product composition is further investigated. The results indicate that the highest methanol production rate can be achieved at H₂/(CO+CO₂) ratio of 1 followed by H₂/(CO+CO₂) ratio of 0.5 and 2 respectively. The hydrogen and carbon monoxide conversions decrease with increasing space velocity for all H₂/(CO+CO₂) ratios tested. Carbon monoxide hydrogenation appears to be the main route to methanol at H₂/(CO+CO₂) ratio of 0.5 and 2. On the other hand, carbon dioxide hydrogenation appears to be the main route to methanol at H₂/(CO+CO₂) ratio of 1. At all H₂/(CO+CO₂) ratios, the extent of the reverse water gas shift reaction decreases with increasing space velocity. The effect of temperature on the kinetics is examined by using the same experimental approach at 508 K. It is found that a different reaction sequence takes place at each temperature. Also, a time on stream study is conducted simultaneously in order to investigate the characteristic of catalyst deactivation with time on stream. During the first 150 hours of time on stream, the catalyst loses approximately 2/3 of its initial activity before reaching a steady state activity.
- Report Numbers:
- E 1.99:doe/pc/89787-t4
doe/pc/89787-t4 - Subject(s):
- Other Subject(s):
- Aluminium Oxides
- Catalytic Effects
- Carbon Dioxide
- Hydrogenation
- Carbon Monoxide
- Copper Oxides
- Methanol
- Synthesis
- Zinc Oxides
- Catalysts
- Chemical Reactors
- Deactivation
- Experimental Data
- Hydrogen
- Quantity Ratio
- Temperature Effects
- Temperature Range 0400-1000 K.
- Alcohols
- Aluminium Compounds
- Carbon Compounds
- Carbon Oxides
- Chalcogenides
- Chemical Reactions
- Copper Compounds
- Data
- Elements
- Hydroxy Compounds
- Information
- Nonmetals
- Numerical Data
- Organic Compounds
- Oxides
- Oxygen Compounds
- Temperature Range
- Transition Element Compounds
- Zinc Compounds
- Note:
- Published through SciTech Connect.
05/01/1992.
"doe/pc/89787-t4"
"DE92016818"
Al-Adwani, H.A.
Texas A and M Univ., College Station, TX (United States) - Funding Information:
- FG22-89PC89787
View MARC record | catkey: 13843006