Search Results - "Pendyala, Ramana"

Aqueous-Phase Fischer–Tropsch Synthesis: Effect of Reaction Temperature on Ruthenium Nanoparticle Catalyst and Comparison with Supported Ru and Co Catalysts by Pendyala, Venkat Ramana Rao, Shafer, Wilson D., Davis, Burtron H.

“…The effect of reaction temperature on the performance of a ruthenium nanoparticle catalyst was investigated during aqueous-phase Fischer–Tropsch synthesis…”
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Fischer–Tropsch synthesis: Attempt to tune FTS and WGS by alkali promoting of iron catalysts by Rao Pendyala, Venkat Ramana, Jacobs, Gary, Mohandas, Janet C., Luo, Mingsheng, Ma, Wenping, Gnanamani, Muthu Kumaran, Davis, Burtron H.

“…[Display omitted] ▶ Effect of water on FT synthesis. ▶ Comparison of alkali promoters on iron catalysts. ▶ Methane selectivity increase with increase in water…”
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Effect of sequence of P and Co addition over silica for Fischer-Tropsch synthesis by Gnanamani, Muthu Kumaran, Jacobs, Gary, Graham, Uschi M., Pendyala, Venkat Ramana Rao, Martinelli, Michela, MacLennan, Aimee, Hu, Yongfeng, Davis, Burtron H.

“…[Display omitted] •P enhances Co dispersion, FT activity and selectivity for C5+.•Sequence of P and Co addition impacts fraction of Co reducible species.•P…”
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Fischer–Tropsch Synthesis: Deactivation as a Function of Potassium Promoter Loading for Precipitated Iron Catalyst by Pendyala, Venkat Ramana Rao, Graham, Uschi M., Jacobs, Gary, Hamdeh, Hussein H., Davis, Burtron H.

“…The effect of potassium promoter loading (0, 0.5, 1.0 and 2.0 atomic ratio) on the performance of precipitated iron catalysts was investigated during…”
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Fischer-Tropsch synthesis: effect of ammonia on product selectivities for a Pt promoted Co/alumina catalyst by Rao Pendyala, Venkat Ramana, Shafer, Wilson D, Jacobs, Gary, Martinelli, Michela, Sparks, Dennis E, Davis, Burtron H

“…The effects of co-fed ammonia in synthesis gas on the activity and product selectivities of a typical cobalt catalyst (0.5% Pt-25% Co/Al 2 O 3 ) were…”
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Fischer-Tropsch synthesis: Effect of solvent on the H 2 –D 2 isotopic exchange rate over an activated nickel catalyst by Pendyala, Venkat Ramana Rao, Shafer, Wilson D., Jacobs, Gary, Davis, Burtron H.

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Fischer–Tropsch Synthesis: Effect of Reaction Temperature for Aqueous-Phase Synthesis Over a Platinum Promoted Co/Alumina Catalyst by Pendyala, Venkat Ramana Rao, Shafer, Wilson D., Jacobs, Gary, Davis, Burtron H.

“…The effect of reaction temperature on the performance of a traditional Fischer–Tropsch cobalt catalyst (0.5 % Pt–25 % Co/Al 2 O 3 ) was investigated during…”
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Fischer–Tropsch Synthesis: XANES Spectra of Potassium in Promoted Precipitated Iron Catalysts as a Function of Time On-stream by Jacobs, Gary, Pendyala, Venkat Ramana Rao, Martinelli, Michela, Shafer, Wilson D., Gnanamani, Muthu Kumaran, Khalid, Syed, MacLennan, Aimee, Hu, Yongfeng, Davis, Burtron H.

“…XANES K-edge spectra of potassium promoter in precipitated Fe catalysts were acquired following activation by carburization in CO and as a function of time…”
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Fischer-Tropsch synthesis: Anchoring of cobalt particles in phosphorus modified cobalt/silica catalysts by Gnanamani, Muthu Kumaran, Jacobs, Gary, Pendyala, Venkat Ramana Rao, Graham, Uschi M., Hopps, Shelley D., Thomas, Gerald A., Shafer, Wilson D., Sparks, Dennis E., Xiao, Qunfeng, Hu, Yongfeng, Davis, Burtron H.

“…[Display omitted] •Addition of phosphorus to Co/SiO2 up to 1wt% improved FT activity and stability.•Higher P loadings on Co/SiO2 were found to hinder the…”
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Fischer-Tropsch synthesis: TPR and XANES analysis of the impact of simulated regeneration cycles on the reducibility of Co/alumina catalysts with different promoters (Pt, Ru, Re, Ag, Au, Rh, Ir) by JERMWONGRATANACHAI, Thani, JACOBS, Gary, DAVIS, Burtron H, SHAFER, Wilson D, VENKAT RAMANA RAO PENDYALA, WENPING MA, MUTHU KUMARAN GNANAMANI, HOPPS, Shelley, THOMAS, Gerald A, KITIYANAN, Boonyarach, KHALID, Syed

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Effect of H2S in Syngas on the Fischer–Tropsch Synthesis Performance of a 0.5%Pt–25%Co–Al2O3 Catalyst by Ma, Wenping, Jacobs, Gary, Shafer, Wilson D., Pendyala, Venkat Ramana Rao, Xiao, Qunfeng, Hu, Yongfeng, Davis, Burtron H.

“…The effect of 1.0 ppm H 2 S in the syngas feed on initial activity and selectivity of a 0.5%Pt–25%Co/Al 2 O 3 catalyst was studied by comparing the catalyst…”
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Fischer-Tropsch synthesis: Support and cobalt cluster size effects on kinetics over Co/Al2O3 and Co/SiO2 catalysts by WENPINGMA, JACOBS, Gary, SPARKS, Dennis E, GNANAMANI, Muthu K, VENKAT RAMANA RAO PENDYALA, YEN, Chia H, KLETTLINGER, Jennifer L. S, TOMSIK, Thomas M, DAVIS, Burtron H

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Fischer–Tropsch Synthesis: XANES Investigation of Hydrogen Chloride Poisoned Iron and Cobalt-Based Catalysts at the K-Edges of Cl, Fe, and Co by Pendyala, Venkat Ramana Rao, Jacobs, Gary, Ma, Wenping, Sparks, Dennis E., Shafer, Wilson D., Khalid, Syed, Xiao, Qunfeng, Hu, Yongfeng, Davis, Burtron H.

“…The effect of co-fed hydrogen chloride (HCl) in syngas on the performance of iron and cobalt-based Fischer–Tropsch (FT) catalysts was investigated in our…”
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Fischer–Tropsch synthesis: effect of ammonia impurities in syngas feed over a cobalt/alumina catalyst by Pendyala, Venkat Ramana Rao, Gnanamani, Muthu Kumaran, Jacobs, Gary, Ma, Wenping, Shafer, Wilson D., Davis, Burtron H.

“…•Addition of ammonia resulted in significant irreversible catalyst deactivation.•The deactivation rate was almost constant at all the concentrations of ammonia…”
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Poisoning of cobalt catalyst used for Fischer–Tropsch synthesis by Sparks, Dennis E., Jacobs, Gary, Gnanamani, Muthu Kumaran, Pendyala, Venkat Ramana Rao, Ma, Wenping, Kang, Jungshik, Shafer, Wilson D., Keogh, Robert A., Graham, Ursula M., Gao, Pei, Davis, Burtron H.

“…•Threshold sulfur concentration for catalyst poisoning.•Reversible poisoning for low-level sulfur.•Low-level sulfur promotion of catalytic activity. Sulfur in…”
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Fischer–Tropsch Synthesis: Effect of Activation Gas After Varying Cu Promoter Loading Over K-Promoted Fe-Based Catalyst by Pendyala, Venkat Ramana Rao, Jacobs, Gary, Hamdeh, Hussein H., Shafer, Wilson D., Sparks, Dennis E., Hopps, Shelley, Davis, Burtron H.

“…The effects of activation gas and copper promoter loading on the Fischer–Tropsch synthesis performance of potassium promoted precipitated iron-based catalysts…”
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Fischer–Tropsch Synthesis: Effect of Start-Up Solvent in a Slurry Reactor by Pendyala, Venkat Ramana Rao, Jacobs, Gary, Luo, Mingsheng, Davis, Burtron H.

“…The effect of start-up solvent on the performance of cobalt-based catalysts and potassium-promoted precipitated iron catalysts was investigated during…”
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Fischer–Tropsch synthesis: Pore size and Zr promotional effects on the activity and selectivity of 25%Co/Al2O3 catalysts by Ma, Wenping, Jacobs, Gary, Gao, Pei, Jermwongratanachai, Thani, Shafer, Wilson D., Pendyala, Venkat Ramana Rao, Yen, Chia H., Klettlinger, Jennifer L.S., Davis, Burtron H.

“…•The FTS over 0–5%Zr–25%Co/Al2O3 catalysts with different pore size was studied.•Wide pore Al2O3 led to higher activity, lower selectivity to CH4 and better…”
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Fischer–Tropsch Synthesis: Effect of Halides and Potassium Addition on Activity and Selectivity of Cobalt by Gnanamani, Muthu Kumaran, Pendyala, Venkat Ramana Rao, Jacobs, Gary, Sparks, Dennis E., Shafer, Wilson D., Davis, Burtron H.

“…The effect of halides and potassium addition on cobalt Fischer–Tropsch synthesis (FTS) was studied using 1L CSTR at 493 K, 1.99 MPa and H 2 /CO of 2.0. The…”
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Fischer–Tropsch Synthesis: Effect of Reducing Agent for Aqueous-Phase Synthesis Over Ru Nanoparticle and Supported Ru Catalysts by Pendyala, Venkat Ramana Rao, Shafer, Wilson D., Jacobs, Gary, Graham, Uschi M., Khalid, Syed, Davis, Burtron H.

“…The effect of the reducing agent on the performance of a ruthenium nanoparticle catalyst was investigated during aqueous-phase Fischer–Tropsch synthesis using…”
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