Journal ArticleDOI
Reaction pathways for the deoxygenation of vegetable oils and related model compounds.
Robert W. Gosselink,Stefan A. W. Hollak,Shu-Wei Chang,Jacco van Haveren,Krijn P. de Jong,Johannes H. Bitter,Daan S. van Es +6 more
TLDR
It is shown that the type of catalyst has a significant effect on the deoxygenation pathway, that is, group 10 metal catalysts are active in decarbonylation/decarboxylation whereas metal sulfide catalyststs are more selective to hydrode oxygengenation.Abstract:
Vegetable oil-based feeds are regarded as an alternative source for the production of fuels and chemicals. Paraffins and olefins can be produced from these feeds through catalytic deoxygenation. The fundamentals of this process are mostly studied by using model compounds such as fatty acids, fatty acid esters, and specific triglycerides because of their structural similarity to vegetable oils. In this Review we discuss the impact of feedstock, reaction conditions, and nature of the catalyst on the reaction pathways of the deoxygenation of vegetable oils and its derivatives. As such, we conclude on the suitability of model compounds for this reaction. It is shown that the type of catalyst has a significant effect on the deoxygenation pathway, that is, group 10 metal catalysts are active in decarbonylation/decarboxylation whereas metal sulfide catalysts are more selective to hydrodeoxygenation. Deoxygenation studies performed under H2 showed similar pathways for fatty acids, fatty acid esters, triglycerides, and vegetable oils, as mostly deoxygenation occurs indirectly via the formation of fatty acids. Deoxygenation in the absence of H2 results in significant differences in reaction pathways and selectivities depending on the feedstock. Additionally, using unsaturated feedstocks under inert gas results in a high selectivity to undesired reactions such as cracking and the formation of heavies. Therefore, addition of H2 is proposed to be essential for the catalytic deoxygenation of vegetable oil feeds.read more
Citations
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Journal ArticleDOI
Enhancement of HDO Activity of MoP/SiO2 Catalyst in Physical Mixture with Alumina or Zeolites
Ivan V. Shamanaev,Irina V. Deliy,Evgeny Yu. Gerasimov,V. P. Pakharukova,Galina A. Bukhtiyarova +4 more
TL;DR: In this paper, a mixture of MoP/SiO2 catalyst with SiC, γ-Al2O3, SAPO-11 and zeolite β was synthesized using TPR method and characterized with N2 physisorption, elemental analysis, H2-TPR, XRD and TEM.
Journal ArticleDOI
Hydrodeoxygenation of aliphatic acid over NiFe intermetallic compounds: Insights into the mechanism via model compound study
TL;DR: In this paper, the NiFe intermetallic compounds (IMC) catalyst promotes the rated determining step, i.e., C11H23COOH→C11H 23CHO, which is attributed to the synergistic effect of Ni-Fe bimetallic sites according to the characterization and calculation.
Journal ArticleDOI
The effect of structure directing agents on micro/mesopore structures of aluminosilicates from Indonesian kaolin as deoxygenation catalysts
Reva Edra Nugraha,Didik Prasetyoko,Nurul Asikin-Mijan,Hasliza Bahruji,Suprapto Suprapto,Yun Hin Taufiq-Yap,Yun Hin Taufiq-Yap,Aishah Abdul Jalil +7 more
TL;DR: In this paper, the effects of structure, porosity and catalytic activity of aluminosilicates were determined for deoxygenation of bio-oil into green diesel.
Journal ArticleDOI
The effect of rosin acid on hydrodeoxygenation of fatty acid
TL;DR: In this article, the authors investigated the inhibition of tall oil fatty acid hydrodeoxygenation (HDO) activity due to addition of rosin acid over sulfided NiMo/Al2O3 catalysts.
Journal ArticleDOI
Production of Jet Biofuels by Catalytic Hydroprocessing of Esters and Fatty Acids: A Review
Rodolpho R. C. Monteiro,I.A. dos Santos,Mª Rosiene A. Arcanjo,Célio L. Cavalcante,Francisco Murilo Tavares de Luna,Roberto Fernandez-Lafuente,Rodrigo Silveira Vieira +6 more
TL;DR: In this paper , the use of supported noble metals have been reported to achieve similar performance of noble metals in the Hydroprocessing of Esters and Fatty Acids (HEFA) process.
References
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Journal ArticleDOI
Heterogeneous Catalytic Deoxygenation of Stearic Acid for Production of Biodiesel
TL;DR: In this article, a novel method for production of diesel-like hydrocarbons via catalytic deoxygenation of fatty acid is discussed, where the model compound stearic acid is deoxgenated to heptadecane.