Search Results - "Cronauer, Donald C"

Fischer−Tropsch Synthesis: An In-Situ TPR-EXAFS/XANES Investigation of the Influence of Group I Alkali Promoters on the Local Atomic and Electronic Structure of Carburized Iron/Silica Catalysts by Ribeiro, Mauro C, Jacobs, Gary, Davis, Burtron H, Cronauer, Donald C, Kropf, A. Jeremy, Marshall, Christopher L

“…The promoting impact of alkali metals (i.e., Li, Na, K, Rb, Cs) on the carburization rate of Fe in Fe/Si catalysts was investigated by X-ray absorption…”
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Influence of Cs Loading on Pt/m-ZrO2 Water–Gas Shift Catalysts by Zahra Rajabi, Michela Martinelli, Caleb D. Watson, Donald C. Cronauer, A. Jeremy Kropf, Gary Jacobs

“…Certain alkali metals (Na, K) at targeted loadings have been shown in recent decades to significantly promote the LT-WGS reaction. This occurs at alkali doping…”
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Na Promotion of Pt/m-ZrO2 Catalysts for the Steam Reforming of Formaldehyde by Michela Martinelli, Elijah S. Garcia, Zahra Rajabi, Caleb D. Watson, A. Jeremy Kropf, Donald C. Cronauer, Gary Jacobs

“…The decomposition selectivity of formaldehyde during steam reforming was explored using unpromoted and sodium promoted Pt/m-ZrO2 catalysts, and the Na content…”
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Influence of Cs Promoter on Ethanol Steam-Reforming Selectivity of Pt/m-ZrO2 Catalysts at Low Temperature by Zahra Rajabi, Li Jones, Michela Martinelli, Dali Qian, Donald C. Cronauer, A. Jeremy Kropf, Caleb D. Watson, Gary Jacobs

“…The decarboxylation pathway in ethanol steam reforming ultimately favors higher selectivity to hydrogen over the decarbonylation mechanism. The addition of an…”
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Promoting the Selectivity of Pt/m-ZrO2 Ethanol Steam Reforming Catalysts with K and Rb Dopants by Martinelli, Michela, Garcia, Richard, Watson, Caleb D., Cronauer, Donald C., Kropf, A. Jeremy, Jacobs, Gary

“…The ethanol steam reforming reaction (ESR) was investigated on unpromoted and potassium- and rubidium-promoted monoclinic zirconia-supported platinum…”
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CO2 Hydrogenation: Na Doping Promotes CO and Hydrocarbon Formation over Ru/m-ZrO2 at Elevated Pressures in Gas Phase Media by Seuser, Grant, Staffel, Raechel, Hocaoglu, Yagmur, Upton, Gabriel F., Garcia, Elijah S., Cronauer, Donald C., Kropf, A. Jeremy, Martinelli, Michela, Jacobs, Gary

“…Sodium-promoted monoclinic zirconia supported ruthenium catalysts were tested for CO2 hydrogenation at 20 bar and a H2:CO2 ratio of 3:1. Although increasing…”
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Fischer-Tropsch Synthesis: The Characterization and Testing of Pt-Co/SiO2 Catalysts Prepared with Alternative Cobalt Precursors by Mehrbod, Mohammad, Martinelli, Michela, Watson, Caleb D., Cronauer, Donald C., Kropf, A. Jeremy, Jacobs, Gary

“…Different low-cost cobalt precursors (acetate, chloride) and thermal treatments (air calcination/H2 reduction versus direct H2-activation) were investigated to…”
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Substitution of Co with Ni in Co/Al2O3 Catalysts for Fischer–Tropsch Synthesis by Michela Martinelli, Sai Charan Karuturi, Richard Garcia, Caleb D. Watson, Wilson D. Shafer, Donald C. Cronauer, A. Jeremy Kropf, Christopher L. Marshall, Gary Jacobs

“…The effect of cobalt substitution with nickel was investigated for the Fischer−Tropsch synthesis reaction. Catalysts having different Ni/Co ratios were…”
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CO Hydrogenation: Exploring Iridium as a Promoter for Supported Cobalt Catalysts by TPR-EXAFS/XANES and Reaction Testing by Cronauer, Donald C., Jacobs, Gary, Linganiso, Linda, Jeremy Kropf, A., Elam, Jeffrey W., Christensen, Steven T., Marshall, Christopher L., Davis, Burtron H.

“…The price of iridium currently trends at about half the cost of platinum, the latter being a typical reduction promoter for Co/Al 2 O 3 Fischer–Tropsch (FT)…”
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Effect of sodium loading on Pt/ZrO2 during ethanol steam reforming by Martinelli, Michela, Castro, Jonathan D., Alhraki, Nour, Matamoros, Maria E., Kropf, A. Jeremy, Cronauer, Donald C., Jacobs, Gary

“…[Display omitted] •Ethoxy and acetate are intermediates during the ethanol steam reforming.•Acetate decarboxylation is favored at 1.8 %Na and higher…”
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Hydrodeoxygenation of phenol over zirconia supported Pd bimetallic catalysts. The effect of second metal on catalyst performance by Resende, Karen A., Teles, Camila A., Jacobs, Gary, Davis, Burtron H., Cronauer, Donald C., Jeremy Kropf, A., Marshall, Christopher L., Hori, Carla E., Noronha, Fabio B.

“…[Display omitted] •The addition of a second metal (Cu.Ag,Zn,Sn) to Pd/ZrO2 formed Pd-alloys.•The formation of Pd-alloys increased the selectivity to…”
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Low temperature water-gas shift: Optimization of K loading on Pt/m-ZrO2 for enhancing CO conversion by Watson, Caleb D., Martinelli, Michela, Cronauer, Donald C., Kropf, A. Jeremy, Marshall, Christopher L., Jacobs, Gary

“…[Display omitted] •Below 1.7 % K loading - No major red shift in formate ν(CH) band or improvement in LT-WGS rate•2.6 % K loading - Optimum loading for…”
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Effect of pretreatment conditions on acidity and dehydration activity of CeO2-MeOx catalysts by Gnanamani, Muthu Kumaran, Garcia, Richard, Jacobs, Gary, Góra-Marek, Kinga, Cronauer, Donald C., Kropf, A. Jeremy, Marshall, Christopher L.

“…[Display omitted] •Metal oxide was added to modify the acid-base characteristics of ceria.•Pretreatment conditions (H2, air) has a profound effect on both…”
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Isotope effect in formaldehyde steam reforming on Pt/m-ZrO2: Insight into chemical promotion by alkalis by Martinelli, Michela, Marcelle, Jonas, Cronauer, Donald C., Kropf, A. Jeremy, Jacobs, Gary

“…Infrared spectroscopy, temperature programmed reaction mass spectrometry (TP-reaction/MS), and catalyst testing were used to investigate alkali promotion of…”
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Fischer-Tropsch synthesis: Direct cobalt nitrate reduction of promoted Co/TiO2 catalysts by Mehrbod, Mohammad, Martinelli, Michela, Martino, Annabelle G., Cronauer, Donald C., Jeremy Kropf, A., Marshall, Christopher L., Jacobs, Gary

“…[Display omitted] •H2 activated air calcined PtCo/TiO2 catalyst had larger, more reducible Co0 clusters.•The Co clusters sintered in Fischer-Tropsch synthesis:…”
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Fischer-Tropsch synthesis: Foregoing calcination and utilizing reduction promoters leads to improved conversion and selectivity with Co/silica by Martinelli, Michela, Mehrbod, Mohammad, Dawson, Chase, Davis, Burtron H., Lietti, Luca, Cronauer, Donald C., Kropf, A. Jeremy, Marshall, Christopher L., Jacobs, Gary

“…•Air calcined Co/SiO2 produce large, easily reduced, Co particles and low Co site densities.•Direct reduction of cobalt nitrate particles on silica yield…”
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The influence of catalysts on biofuel life cycle analysis (LCA) by Benavides, Pahola Thathiana, Cronauer, Donald C., Adom, Felix, Wang, Zhichao, Dunn, Jennifer B.

“…Catalysts play an important role in biofuel production but are rarely included in biofuel life cycle analysis (LCA). In this work, we estimate the…”
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Ga and In modified ceria as supports for cobalt-catalyzed Fischer-Tropsch synthesis by Gnanamani, Muthu Kumaran, Jacobs, Gary, Shafer, Wilson D., Martinelli, Michela, Cronauer, Donald C., Kropf, A. Jeremy, Marshall, Christopher L., Davis, Burtron H.

“…[Display omitted] •Ga or In was introduced to ceria by co-precipitation using urea hydrolysis.•H2-TPR XANES showed that Ga or In addition increased the Ce3+…”
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Fischer–Tropsch synthesis: Comparisons between Pt and Ag promoted Co/Al2O3 catalysts for reducibility, local atomic structure, catalytic activity, and oxidation–reduction (OR) cycles by Jermwongratanachai, Thani, Jacobs, Gary, Ma, Wenping, Shafer, Wilson D., Gnanamani, Muthu Kumaran, Gao, Pei, Kitiyanan, Boonyarach, Davis, Burtron H., Klettlinger, Jennifer L.S., Yen, Chia H., Cronauer, Donald C., Kropf, A. Jeremy, Marshall, Christopher L.

“…•Ag metal is currently ∼2% of the price of Pt; both facilitate Co oxide reduction.•Pt coordination with Co at the atomic level, even up to 5% by weight.•Ag…”
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Fischer−Tropsch Synthesis: Influence of Mn on the Carburization Rates and Activities of Fe-Based Catalysts by TPR-EXAFS/XANES and Catalyst Testing by Ribeiro, Mauro C, Jacobs, Gary, Pendyala, Ramana, Davis, Burtron H, Cronauer, Donald C, Kropf, A. Jeremy, Marshall, Christopher L

“…Fe-based catalysts containing different amounts of Mn were tested for Fischer−Tropsch synthesis using a stirred tank reactor at 270 °C, 1.21 MPa, and H2:CO =…”
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