A5035719083- Catalysis and Hydrodesulfurization Studies
- Lignin and Wood Chemistry
- Catalysis for Biomass Conversion
- Thermochemical Biomass Conversion Processes
- Biofuel production and bioconversion
- Recycling and Waste Management Techniques
- Catalysis and Oxidation Reactions
- Biodiesel Production and Applications
- Porphyrin and Phthalocyanine Chemistry
- Subcritical and Supercritical Water Processes
- Chemical Synthesis and Analysis
- Cyclopropane Reaction Mechanisms
- Mesoporous Materials and Catalysis
- Anodic Oxide Films and Nanostructures
- Catalytic Cross-Coupling Reactions
- Heat transfer and supercritical fluids
- Diamond and Carbon-based Materials Research
- Catalytic Processes in Materials Science
- Petroleum Processing and Analysis
- Metal-Catalyzed Oxygenation Mechanisms
- Enzyme Catalysis and Immobilization
- Radical Photochemical Reactions
- Coal Combustion and Slurry Processing
- Hydrocarbon exploration and reservoir analysis
- Chemical Reactions and Isotopes
Washington State University
2019-2022
Southwest Research Institute
2012-2018
Western University
2003
Chinese University of Hong Kong
1999-2002
Abstract The synthesis of high‐efficiency and low‐cost catalysts for hydrodeoxygenation (HDO) waste lignin to advanced biofuels is crucial enhancing current biorefinery processes. Inexpensive transition metals, including Fe, Ni, Cu, Zn, were severally co‐loaded with Ru on HY zeolite form bimetallic bifunctional catalysts. These subsequently tested HDO conversion softwood several model compounds. Results indicated that the inexpensive earth‐abundant metals could modulate hydrogenolysis...
Hydrodeoxygenation (HDO) of two dilute acid flowthrough pretreated softwood lignin samples, including residual in solid residues (ReL) and recovered insoluble liquid (RISL), with apparent different physical chemical structures, was comprehensively studied. A combination catalysts (HY zeolite Ru/Al2O3) employed to investigate the effects especially condensed on HDO upgrading process. Results indicated that structure short side chains hindered its conversion under reaction conditions, catalyst...
High temperature and metal catalysts with moderate hydrogenolysis hydrogenation activity facilitated transalkylation during HDO upgrading of lignin-derived bio-oil compounds.
Nonbridged metal dimers of phenanthroline-based N2O2 ligands rhodium and iridium have been synthesized from the reactions hydrides with TEMPO (2,2',6,6'-tetramethylpiperidinyloxy). Modification phenathroline has led to more lipophilic complexes. The oxidative additions methyl iodide, silane, hydrogen studied.
Methods for low-temperature CVD of metals on polymers have been established, and ordered macroporous platinum or platinum−palladium alloy films prepared the first time by CVD, using polystyrene spheres as templates.
This review patent summarized the catalytic studies of molybdenum based catalysts for higher alcohols synthesis reported in literature and recent patents. Molybdenum sulfide was most widely studied catalyst, with Ni, Co, Mn, or Rh as co-catalyst, synthesis. oxide, carbide, phosphide were also reviewed this paper. Alkali metals, such K, Rb Cs, usually used promoters. The selectivity alkali metal doped MoS2 is strongly dependent on used. have following benefits: 1) sulfide-based require 50 to...
This paper reports a novel low-temperature process for aromatics production through lignin depolymerization catalyzed by Pd-zeolite Y catalyst. Under the hydrogen atmosphere, were predominant products with high yields of phenols and dimers. The prepared catalysts facile method exhibited much higher catalytic efficiency than zeolite or commercial Pd/Al2O3-Zeolite composites. Results revealed that catalyst is highly active cleavage inter-linkages, especially C-O-C bonds hydrogenolysis.
Efficient cleavage of β-O-4 bonds in lignin to high-yield aromatic compounds for the potential production fuels and chemicals is vital economics modern biorefinery industry. This work distinct that a detailed mechanistic analysis reaction pathways veratrylglycero-β-guaiacyl ether (VGE) catalyzed by transition-metal-free solid acid zeolite aqueous conditions at high hydrogen pressure has been performed. VGE degradation produced monomers yields (≈87 %), including guaiacol (48.2...
Chemical vapor deposition (CVD) of Ni, Pd, and Pt films Ni/Pd Pd/Pt bimetallic on multiwall carbon nanotubes (MWCNTs) can be effected at low temperature if the are pretreated by CVD titanium carbide. In absence pretreatment, leads to formation isolated nanoparticles nickel-group metals. The metallized MWCNTs curved or kinked, as a result interaction with metal. Preliminary oxidation allows easier metallization, bending metallated is not observed in this case.Key words: deposition, platinum,...
Oxidative desulfurization (ODS) process, a non-hydrogen consuming method to remove sulfur from liquid fuels, has received lot of attention recently for some fuel feedstocks. This paper reviewed the recent patents in ODS process. Generally Hydrogen peroxide (H2O2) is used as an oxidant organic acids (e.g., acetic acid or formic acid) medium Compared with traditional hydrodesulfurization (HDS) process two main advantages: 1) can be carried out phase under very mild operating conditions, thus...
Catalytic hydrodeoxygenation, which can lead to oxygen-atom removal, ring hydrogenation, and ring-opening, is an effective strategy depolymerize lignin increase overall bio-oil conversion yield. In this study, a bifunctional catalyst, low-loading Ru (0.2-0.5 wt.%) supported on tungstated zirconia was evaluated for hydrogenation opening of model compounds technical derived from corn stover. The Ru/W-Zr-O catalyst showed comparable selectivity towards ring-hydrogenation as the Ru/Al 2 O 3...
Abstract Efficient conversion of lignin to high-yield aromatic compounds for the potential production fuels and chemicals is vital economics modern biorefinery industry. Herein, we report a novel catalytic process involving cleavage β -O-4 bonds, which are major interunit linkages in native lignin. This work distinct that detailed mechanistic analysis reaction pathways veratrylglycero- -guaiacyl ether (VGE) catalyzed by transition-metal-free solid acid zeolite under aqueous conditions at...
Sustainable aviation fuels (SAFs) must demonstrate specific physical and chemical properties as well material compatibility (i.e., seal swell) to be used an turbine fuel. Several alternative jet incorporated in ASTM D7566 are comprised mainly of n/iso-alkanes can only blended up 50 vol% due density issues. Prior work illustrated the ability cycloalkanes replace aromatics’ role compatibility. Here, we report first archival documentation a feedstock process yield product composition able...