Hydrotreating of Model Mixtures and Catalytic Fast Pyrolysis Oils over Pd/C
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
Noble metal catalysts may be attractive for hydrotreating of catalytic fast pyrolysis (CFP) oils. Model mixtures of raw noncatalytic fast pyrolysis and CFP oils representative of upgrading over HZSM-5 were hydrotreated in a batch reactor at 250-360 degrees C with palladium/carbon catalyst and 100 bar (cold) of hydrogen. The CFP oils gave high carbon yields of >95%, consumed less hydrogen per gram of oil produced, and had lower final oxygen concentrations than the raw oils did. GC/MS results were consistent with hydrogenation of alkenes and some oxygen-functionalized aromatic rings (e.g., phenolics) followed by hydrodeoxygenation at 360 degrees C. Complete deoxygenation was not obtained, and higher temperatures are recommended. The model oils' chemical transformations, carbon yields, and deoxygenation were similar to those of oils produced in a bench-scale reactor with HZSM-5 catalyst.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1494732
- Report Number(s):
- NREL/JA--5100-72332
- Journal Information:
- Energy and Fuels, Journal Name: Energy and Fuels Journal Issue: 12 Vol. 32; ISSN 0887-0624
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English