A5006257837- Catalysts for Methane Reforming
- Catalysis for Biomass Conversion
- Catalytic Processes in Materials Science
- Lignin and Wood Chemistry
- Catalysis and Hydrodesulfurization Studies
- Biofuel production and bioconversion
- Microbial Metabolic Engineering and Bioproduction
- Asymmetric Hydrogenation and Catalysis
- Zeolite Catalysis and Synthesis
- Mesoporous Materials and Catalysis
- Biochemical and biochemical processes
- Catalysis and Oxidation Reactions
- Advanced Control Systems Optimization
- Process Optimization and Integration
- Enhanced Oil Recovery Techniques
- Advanced Combustion Engine Technologies
- Enzyme-mediated dye degradation
- Methane Hydrates and Related Phenomena
- Hydraulic Fracturing and Reservoir Analysis
- Carbon Dioxide Capture Technologies
- Biodiesel Production and Applications
- Carbon dioxide utilization in catalysis
- Combustion and flame dynamics
- Fermentation and Sensory Analysis
- Petroleum Processing and Analysis
Pacific Northwest National Laboratory
2016-2024
Washington State University
2014-2023
Government of the United States of America
2023
Battelle
2020
Richland College
2016
This paper reports a new method of applying Deep Eutectic Solvents (DES) for extracting lignin from woody biomass with high yield and purity.
Abstract The emerging biomass‐to‐biofuel conversion industry has created an urgent need for identifying new applications biorefinery lignin. This paper demonstrates a route to producing dicarboxylic acids from lignin through chalcopyrite‐catalyzed oxidation in highly selective process. Up 95 % selectivity towards stable was obtained several types of and model compounds under mild, environmentally friendly reaction conditions. findings this study paved avenue conversions applications.
The complex and heterogeneous nature of the lignin macromolecule has presented a lasting barrier to its utilization. To achieve high yield, technical extraction process usually severely modifies condenses native structure lignin, which is critical drawback for utilization in conversion processes. In addition, there no method capable separating from plant biomass with controlled structural properties. Here, we developed an N-heterocycle-based deep eutectic solvent formed between lactic acid...
Abstract The formation of carbonaceous deposits (coke) in zeolite pores during catalysis leads to temporary deactivation catalyst, necessitating regeneration steps, affecting throughput, and resulting partial permanent loss catalytic efficiency. Yet, even date, the coke molecule distribution is quite challenging study with high spatial resolution from surface bulk catalyst particles at a single particle level. To address this challenge we investigated molecules HZSM-5 after ethanol...
Abstract Lignin is the largest source of renewable material with an aromatic skeleton. However, due to recalcitrant and heterogeneous nature lignin polymer, it has been a challenge effectively depolymerize produce high‐value chemicals high selectivity. In this study, highly efficient lignin‐to‐monomeric phenolic compounds (MPC) conversion method based on peracetic acid (PAA) treatment was reported. PAA two biorefinery samples, diluted pretreated corn stover (DACSL) steam exploded spruce...
Hydrothermal Liquefaction (HTL) provides a pathway to reducing wet waste volumes and producing biofuels such as SAF or sustainable diesel. However, 20–30% of the carbon in wet-waste feed is converted low molecular weight, water-soluble organic compounds resulting an aqueous product requiring treatment before disposal. Extraction fuels chemicals from appealing but challenging route due concentrations wide variety compounds. Herein, we report on air oxidation HTL stream reduce its complexity...
Ethanol can be used as a platform molecule for synthesizing valuable chemicals and fuel precursors. Direct synthesis of C5+ ketones, building blocks lubricants hydrocarbon fuels, from ethanol was achieved over stable Pd-promoted ZnO-ZrO2 catalyst. The sequence reaction steps involved in the ketone formation determined. key were found to situ generation acetone intermediate cross-aldol condensation between intermediates acetaldehyde acetone. Pd-Zn alloy identified critical factor maintaining...
The emergence of a renewable ethanol industry has provided sustainable platform molecule to produce value-added chemicals and fuels; what is lacking now are viable conversion processes from that can displace non-renewable pathways.
Abstract 2,3‐Butanediol (BDO) is a bio‐derived building block available from biomass through biochemical methods in high titers (>120 g L −1 ) making it an attractive target for production and further upgrading to chemical products fuels such as sustainable aviation fuel. A key challenge enable the adoption of BDO precursor effective separation isolation this molecule fermentation broth. has boiling point higher than that water (177°C), consequence, via distillation energy‐intensive...
The selective dehydration of 2,3-butanediol (2,3-BDO) to 3-buten-2-ol (3B2oL) was investigated over indium oxide (In2O3) catalysts. effect different process parameters such as reaction temperature, weight hourly space velocity (WSHV), and carrier gas on the product distribution during 2,3-BDO demonstrated. Highest selectivity 3B2oL (70%) achieved when performed under a H2 flow, with 81% single pass conversion 2,3-BDO. In all these cases, dehydrogenation found be prevalent side dehydration....
Large-scale underground hydrogen storage (UHS) is a critical component in the emerging economy. Knowledge of multiphase flow behavior involving reservoir formations crucial to characterizing transport properties and essential for deliverability operations UHS. There are still many gaps fully understanding hydrogen–methane–brine phase that require further investigation. In this work, H2 CH4 were injected through brine-saturated sandstone cores using tri-axial core holder system fitted with...
Integrating mesoscale to the molecular level understanding of nanoparticle nucleation phenomena can drive bottom-up synthesis approach for target applications. The authors studied thermal evolution binary metal oxide (cobalt and nickel oxides) structural phases on porous silica host from over wide spatial scale using multimodal analysis involving scanning transmission electron microscopy, x-ray absorption near-edge spectroscopy (XANES), nuclear magnetic resonance (NMR) along with density...
Die Bildung einer Pd/Zn-Legierung erschließt einen neuen katalytischen Reaktionsweg für die selektive Generierung von hochwertigen Verbindungen aus erneuerbarem Ethanol, wie K. Ramasamy et al. in ihrem Forschungsartikel auf S. 14658 berichten. Schlüsselschritte der direkten Konversion Ethanol zu C5+-Ketonen sind In-situ-Bildung des Aceton-Intermediats und gekreuzte Aldolkondensation zwischen den Reaktionsintermediaten Acetaldehyd Aceton.
We report the octane sensitivity of fuel blends containing blendstocks diverse chemical functionalities blended in concentrations up to 20% by volume into BOBs (Blendstocks for Oxygenate Blending). This study focuses on functional groups which lack reliable number data. The effects cyclopropanes, alkyl carbonates, oxiranes, alcohols, ketones, esters, nitrogen-containing compounds, cyclic and olefinic hydrocarbons, multifunctional materials combinations these functionalities, co-blends with...