Results 181 to 190 of about 4,275 (227)

Hydrodeoxygenation of a Lignin Model Compound

1988
With the goal of developing a process for producing high octane gasoline blending compounds from lignin, a series of Mo and NiMo catalysts on aluminophosphate supports, having P:A1 atomic ratios of 0 to 1, have been screened for their ability to hydrodeoxygenate and dealkylate a lignin model compound, 4-propylguaiacol. Their performance was compared to
M. A. Ratcliff, D. K. Johnson, F. L. Posey, M. A. Maholland, S. W. Cowley, H. L. Chum   +5 more
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Depolymerization and Hydrodeoxygenation of Switchgrass Lignin with Formic Acid

ChemSusChem, 2012
AbstractOrganosolv switchgrass lignin is depolymerized and hydrodeoxygenated with a formic acid hydrogen source, 20 wt % Pt/C catalyst, and ethanol solvent. The combination of formic acid and Pt/C is found to promote production of higher fractions of lower molecular weight compounds in the liquid products.
Weiyin, Xu, Stephen J, Miller, Pradeep K, Agrawal, Christopher W, Jones   +3 more
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Hydrodeoxygenation of Triglycerides into Renewable Diesel

Triglycerides or vegetable oils as fuels is an old idea that can be traced back to the early days of diesel engine development. In this chapter, an overview of the fuel properties of triglycerides and their various upgrading technologies (physical and chemical; catalytic or non-catalytic) are discussed.
Ajaikumar Samikannu, Mariappan Mani, Lakhya Jyoti Konwar, Päivi Mäki-Arvela, Pasi Virtanen, Jyri-Pekka Mikkola   +5 more
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The mechanism of catalytic hydrodeoxygenation of furan

Applied Catalysis, 1983
Abstract The distribution and yield of products from the hydrodeoxygenation of furan over cobalt molybdate catalyst were measured. Presulfiding resulted in a marked increase in the yield compared to the yield obtained over a reduced catalyst. Under similar conditions tetrahydrofuran was about three times more reactive than furan.
openaire   +1 more source

Cobalt-molybdenum catalysts for the hydrodeoxygenation of cyclohexanone

Renewable Energy, 2020
Abstract Cyclohexanone is an important oxygenated intermediate in the conversion of lignin to bio-fuel. Following the importance of bio-fuel production and conversion of lignin-derived bio-oils, the deoxygenation of cyclohexanone is pursued. Two hydrotreating catalysts composed of cobalt, molybdenum, and alumina support were evaluated at 300–400 °C ...
Ali Bakhtyari, Mohammad Reza Rahimpour, Sona Raeissi   +2 more
openaire   +1 more source

Modeling of oxolane hydrodeoxygenation in the presence of tungsten disulfide

Журнал структурной химии, 2018
A theoretical study of hydrotreatment of the oxolane molecule without a catalyst and in the presence of a catalyst is performed by numerical DFT/B3LYP methods with 6-31G(d) and LanL2DZ basis sets. The catalyst used in this study is tungsten disulfide (WS2) which is mo­deled by a three anionic vacancy site WS3H3+.
S. Koudjina, Y. G. S. Atohoun, M. T. A. K. Houngue, U. A. Kuevi, G. A. Kpotin, W. G. Kanhounnon, J. B. Mensah   +6 more
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Mechanistic Investigation of Molybdate‐Catalysed Transfer Hydrodeoxygenation

Chemistry – A European Journal, 2016
AbstractThe molybdate‐catalysed transfer hydrodeoxygenation (HDO) of benzyl alcohol to toluene driven by oxidation of the solvent isopropyl alcohol to acetone has been investigated by using a combination of experimental and computational methods. A Hammett study that compared the relative rates for the transfer HDO of five para‐substituted benzylic ...
Daniel B, Larsen, Allan R, Petersen, Johannes R, Dethlefsen, Ayele, Teshome, Peter, Fristrup   +4 more
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Thermodynamics and the hydrodeoxygenation of 2,3-benzofuran

1990
Ideal-gas thermodynamic properties for 2,3-benzofuran and 4,5-dihydro-2,3-benzofuran based on accurate calorimetric measurements were determined. Critical-temperature/density measurements obtained using a differential scanning calorimeter (DSC) are reported for 2,3- benzofuran.
W. V. Steele, R. D. Chirico
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Catalytic hydrodeoxygenation III. Interactions between catalytic hydrodeoxygenation of m-cresol and hydrodenitrogenation of indole

Journal of Catalysis, 1983
Abstract Simultaneous hydrodenitrogenation (HDN) and hydrodeoxygenation (HDO) is studied with indole/ m -cresol conversions over a sulfided CoMo HDS catalyst. The mutual inhibition of indole (and indoline) on HDO and of m -cresol on HDN is established.
openaire   +1 more source

Hydrodeoxygenation of guaiacol on noble metal catalysts

Catalysis Today, 2009
Abstract Hydrodeoxygenation (HDO) performed at high temperatures and pressures is one alternative for upgrading of pyrolysis oils from biomass. Studies on zirconia-supported mono- and bimetallic noble metal (Rh, Pd, Pt) catalysts showed these catalysts to be active and selective in the hydrogenation of guaiacol (GUA) at 100 °C and in the HDO of GUA ...
A. Gutierrez, R.K. Kaila, M.L. Honkela, R. Slioor, A.O.I. Krause   +4 more
openaire   +1 more source