A5054759868- Catalytic Processes in Materials Science
- Catalysis for Biomass Conversion
- Catalysis and Hydrodesulfurization Studies
- Catalysts for Methane Reforming
- Catalysis and Oxidation Reactions
- Zeolite Catalysis and Synthesis
- Process Optimization and Integration
- Advanced Combustion Engine Technologies
- Microbial Metabolic Engineering and Bioproduction
- Thermochemical Biomass Conversion Processes
- Biodiesel Production and Applications
- Mesoporous Materials and Catalysis
- Innovative Microfluidic and Catalytic Techniques Innovation
- Heat transfer and supercritical fluids
- Petroleum Processing and Analysis
- Atmospheric chemistry and aerosols
- Asymmetric Hydrogenation and Catalysis
- Chemistry and Chemical Engineering
- Fiber-reinforced polymer composites
- Carbon Dioxide Capture Technologies
- Material Properties and Applications
- Radiopharmaceutical Chemistry and Applications
- Nanomaterials for catalytic reactions
- Click Chemistry and Applications
- Machine Learning in Materials Science
Battelle
2017-2024
Pacific Northwest National Laboratory
2015-2024
Richland College
2015-2019
Institute of Catalysis and Petrochemistry
2016
Three factors, (i) the ethanol "blend wall", which limits its market as a transportation fuel, (ii) advances in production efficiency, and (iii) feedstock diversification, could lead to excess at competitive prices. Those factors have already motivated search for value-added derivatives (e.g., distillate fuels, olefins, asymmetric amines). Siting small, low cost, flexible conversion facilities process or near fermentation plant encourage growth of an enterprise. Decreasing barriers entry,...
A series of Pd/ZnO catalysts with different Pd loadings were prepared using needlelike ZnO crystallites (ZnO-N) predominant (10–10) nonpolar facets exposed and commercial (ZnO-P) without any dominant facets. The characterized complementary techniques, such as nitrogen physisorption, X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy analysis adsorbed CO (CO-FTIR). effect crystallite faceting on the activity selectivity...
Efficient synthesis of renewable fuels that will enable cost competitiveness with petroleum-derived remains a grand challenge.
An important activity/selectivity trade-off occurs at increased olefin oligomerization temperatures. Jet-range product decreases and paraffin formation increases high
Ethanol is a promising platform molecule for production of variety fuels and chemicals. Of particular interest the middle distillate (i.e., jet diesel blendstock) from renewable ethanol feedstock. State-of-the-art alcohol-to-jet technology requires multiple process steps based on catalytic dehydration to ethylene, followed by multistep oligomerization including n-butene formation then hydrotreatment distillation. Here we report that, over Ag-ZrO2/SBA-16 with balanced metal Lewis acid sites,...
Steam reforming of ethylene glycol (EG) over MgAl2O4 supported metal (15 wt % Ni, 5 Rh, and 15 Co) catalysts was investigated using combined experimental theoretical methods. Compared to highly active Rh Ni with 100% conversion, the steam activity EG Co catalyst is comparatively lower only 42% conversion under same reaction conditions (500 °C, 1 atm, 119 000 h–1, S/C = 3.3 mol). However, CH4 selectivity remarkably lower. For example, by varying gas hour space velocity (GHSV) such that...
Solar concentrators employed in conjunction with highly efficient micro- and meso-channel reactors offer the potential for cost-effective upgrading of energy content natural gas, providing a near-term path towards future solar-fuel economy reduced carbon dioxide emissions. To fully exploit heat mass transfer advantages offered by reactors, active stable gas steam reforming catalysts are required. In this paper, we report catalytic performance MgAl2O4-supported Rh (5 wt.%), Ir Ni (15 wt.%)...
We report on the markedly improved stability of a novel 2-bed catalytic system, as compared to that conventional 1-bed steam reforming catalyst, for production H2 from acetic acid. The system consists (i) basic oxide ketonization catalyst conversion acid acetone, and (ii) Co-based both beds placed in sequence within same unit operation. Steam catalysts are particularly prone deactivation when acid, used here model compound aqueous fraction bio-oil. Catalysts consisting MgAl2O4, ZnO, CeO2,...
In this study we report on a Zn<sub>x</sub>Zr<sub>y</sub>O<sub>z</sub> mixed oxide type catalyst capable of converting syngas-derived C<sub>2</sub>+ oxygenate feedstock to isobutene-rich olefins.
Abstract Ag−ZrO 2 /SBA‐16 has recently been found to be efficient for catalyzing the single‐step conversion of ethanol butene (1‐ and 2‐butene mixtures) in presence H . The reaction proceeds via a cascading sequence reactions over mixed metal Lewis sites, with catalyst composition tuned selectively favor formation. However, slowly deactivates when evaluated long times. In this work, we lifetime system ethanol‐to‐butene at 325 °C up 800 hours on stream. Several characterization techniques...
Alkali addition to a Ag/ZrO 2 /SBA-16 system for ethanol butadiene affects beneficial decrease in Lewis acid sites, mitigating dehydration. This results remarkable selectivity and superior productivity over the lifetime study.
Abstract In this study we investigated the conversion of aqueous methyl‐ethyl‐ketone (MEK) to olefin fuel precursors over Zn x Zr y O z mixed oxide catalysts. Experiments were carried out in water as MEK is intended be produced from dehydration 2,3‐butanediol fermentation broth which highly diluted water. We demonstrated that catalysts are effective for converting C 4 −C 5 olefins. High selectivity olefins equal 85 % was reached at 92 per pass when under H 2 atmosphere. Catalyst stability 60...