(617ag) Aqueous Phase Hydrodeoxygenation of Triglyceride Derivatives over Bifunctional Catalyst with/without the High Pressure of H2

Aviation fuel is one of the biggest share among all the liquid fuel consumption and is hardly replaced by the other renewable energy resources in the near future due to the required high energy density¹. Triglycerides from plant have been transformed into transportation fuels in many physical and chemical ways such as physical blending, transesterification, cracking and hydrodeoxygenation(HDO). Hydrodeoxygenation is the most promising route for jet fuel production from triglycerides due the high compatibility of the product to its fossil counterpart. However the hydrodeoxygenation of triglycerides consumes large amount of hydrogen and produces many less valuable byproducts such as glycerol, propane, methane². And generally hydrodeoxygenation of triglyceride is accompanied by decarboxylation and decarbonylation³. Thus suppressing the formation of small molecular hydrocarbons and making better use of the glycerol is important for the triglyceride to jet fuel process.

In this work, the aqueous phase HDO of derivatives from triglycerides over the supported bifunctional catalysts in the presence/absence of high pressure H₂were studied. A series of bifunctional metal/acid catalysts were designed and prepared. The synergy effect of transition metal and metal oxide were examined as well as the effects of hydrogen pressure, reaction temperature on the reaction kinetics and product selectivity.

References

1. (a) Galadima, A.; Muraza, O., Catalytic upgrading of vegetable oils into jet fuels range hydrocarbons using heterogeneous catalysts: A review. Journal of Industrial and Engineering Chemistry 2015, 29, 12-23; (b) Lu, H.; Liu, Y.; Zhou, H.; Yang, Y.; Chen, M.; Liang, B., Production of biodiesel from Jatropha curcas L. oil. Comput. Chem. Eng. 2009, 33 (5), 1091-1096.

2. Choudhary, T. V.; Phillips, C. B., Renewable fuels via catalytic hydrodeoxygenation. Appl. Catal., A: General 2011, 397 (1â??2), 1-12.

3. Zhao, C.; Bruck, T.; Lercher, J. A., Catalytic deoxygenation of microalgae oil to green hydrocarbons. Green Chemistry 2013, 15 (7), 1720-1739.