Written in English
|The Physical Object|
|Number of Pages||88|
Gao, Danni. Ph.D., Purdue University, December Catalytic Hydrodeoxygenation of Guaiacol over Noble Metal Catalysts. Major Professor: Arvind Varma. Pyrolysis of biomass is a promising technology to convert solid biomass into liquid bio-oils. However, bio-oils have high water and oxygen content whichAuthor: Danni Gao. In this study, platinum-loaded HY zeolites (Pt/HY) with different Si/Al molar ratios were used as catalysts for the hydrodeoxygenation of guaiacol, anisole, veratrole, and phenol to a range of Cited by: Hydrodeoxygenation rejects oxygen as water by catalytic reaction with hydrogen. This is a separate and distinct process to fast pyrolysis that can, therefore, be carried out remotely. The process is typically high pressure (up to 20 MPa) and moderate temperature (up to °C) and requires a hydrogen supply or source .Most attention is now focussed on multiple step processes with. Upgrading of lignin-derived bio-oils by catalytic hydrodeoxygenation. Majid Saidi, a Fereshteh Samimi, a including anisole, guaiacol, and phenol. The review includes recommendations for further research and an attempt to place HDO in a context of options for renewable fuels and chemicals, but it does not provide an economic assessment.
The reforming of 2-methoxy phenol and dibenzofuran via catalytic hydrodeoxygenation was investigated using a batch reactor at 40 bar and °C. The characteristics of the catalysts were analyzed by N 2 adsorption-desorption, X-ray diffraction, and NH 3 temperature programmed by: These boost the catalytic activity, selectivity of guaiacol hydrodeoxygenation toward cycloalkanes and long-term stability over the Pt/hollow ZSM-5 catalyst combined with improved mass transfer of. Highly selective hydrodeoxygenation of anisole, phenol and guaiacol to benzene over nickel phosphide† Yunhua Li,* Juan Fu and Binghui Chen Ni 2P supported catalysts have extensively been studied for various hydrodeoxygenation (HDO) reactions. However, the main products are cyclohexane or cyclohexanol for lignin-derived compounds HDO overCited by: Among other product components, veratrole, anisole, cresol, and phenol are well-known reaction intermediates of the catalytic conversion processes of guaia18,19, The main reactions of the HDO of guaiacol include direct hydrogenation, dehydration, direct deoxygenation, demethylation, methylation, and transalkylat Cited by:
GCMS results showed that phenol is a major component in all the conditions. As there is an increase in the temperature (, , , C), reaction time (1, 5, 8, 24 h), H 2 /guaiacol molar feed ratio (0, , , and ), and catalyst amount (0, 25, 50, mg), the conversion has increased significantly while maintaining the high Author: A. Aqsha, N. Mahinpey, L. Katta, L. Gras, C. J. Lim. Anisole hydrodeoxygenation reaction pathways in the gas phase were studied over a commercially available Ni-based hydrotreating catalyst, whereas guaiacol hydrodeoxygenation reaction pathways were studied over two different commercially available Ni-based hydrotreating catalysts, a Fe-based catalyst, and a zeolite-based catalyst using online Cited by: H2:guaiacol ratio), 98% guaiacol is converted on NiMo/TiO2 resulting phenol, poly methyl substituted phenols, and traces of cyclohexanone and benzene. It is remarkable that a low amount of catechol dimethyl ether and no indication of catechol and creosol were detected. Keywords: catalyst, guaiacol, hydrodeoxygenation, impregnation, phenol. Catalytic Reaction. Deoxygenation of anisole and guaiacol was carried out at atmospheric pressure and C in a quartz tube of 3/ 8 in. outer diameter and in. length. In a typical experiment, the liquid reactant (guaiacol or anisole) was injected from a syringe pump (mL/h)toaheatedstainless-steeltube,whereitwasmixedwithagasCited by: