Robert A. Dagle
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View article: High energy content bi- and mono-cycloalkane and iso-alkane jet blending mixtures derived from ethanol
High energy content bi- and mono-cycloalkane and iso-alkane jet blending mixtures derived from ethanol Open
The aromatization of ethanol-derived olefinic intermediates provides a route forward to high energy density synthetic aviation fuel (SAF) with favorable O-ring seal swell properties.
View article: State of the Art in Thermal Catalytic Upgrading of Biomass and Biomass-Derived Intermediates
State of the Art in Thermal Catalytic Upgrading of Biomass and Biomass-Derived Intermediates Open
Biomass-derived energy sources represent a promising domestic route for fuel and chemical production, taking advantage of largely underutilized biological and waste resources. Heterogeneous catalysis plays a key role in these biomass conve…
View article: Single-Pass Demonstration of Integrated Capture and Catalytic Conversion of CO<sub>2</sub> from Simulated Flue Gas to Methanol in a Water-Lean Carbon Capture Solvent
Single-Pass Demonstration of Integrated Capture and Catalytic Conversion of CO<sub>2</sub> from Simulated Flue Gas to Methanol in a Water-Lean Carbon Capture Solvent Open
[Image: see text] Here, we demonstrate an integrated semibatch simultaneous CO(2) capture and conversion to methanol process using a water-lean solvent, N-(2-ethoxyethyl)-3-morpholinopropan-1-amine (2-EEMPA), that serves as both the captur…
View article: Production of 1,3-Butadiene from Renewable Feedstocks Ethanol and 1,3-Butanediol - CRADA 560 (Final Report)
Production of 1,3-Butadiene from Renewable Feedstocks Ethanol and 1,3-Butanediol - CRADA 560 (Final Report) Open
1,3-butadiene is a commodity chemical currently produced from petroleum sources. Producing 1,3-butadiene from renewable resources will contribute to decarbonization, provide new green jobs, and reduce our dependance on oil. Development of …
View article: Methane Pyrolysis for CO2-free H2 and Carbon Nanomaterials - CRADA 576 (Final Report)
Methane Pyrolysis for CO2-free H2 and Carbon Nanomaterials - CRADA 576 (Final Report) Open
In this CRADA project we continued to develop the Pacific Northwest National Laboratory (PNNL) patent-pending Regenerable Catalytic Pyrolysis (ReCaP) process technology for producing CO2-free hydrogen (H2) from inexpensive and domestically…
View article: Toward Rational Design of Nickel Catalysts for Thermocatalytic Decomposition of Methane for Carbon Dioxide‐Free Hydrogen and Value‐Added Carbon Co‐Product: A Review
Toward Rational Design of Nickel Catalysts for Thermocatalytic Decomposition of Methane for Carbon Dioxide‐Free Hydrogen and Value‐Added Carbon Co‐Product: A Review Open
Thermocatalytic decomposition of methane provides opportunities for hydrogen (H 2 ) production with no emission of carbon dioxide. However, high‐value carbon products need to be produced for economic deployment of thermocatalytic decomposi…
View article: Reactive direct air capture of CO <sub>2</sub> to C–C coupled products using multifunctional materials
Reactive direct air capture of CO <sub>2</sub> to C–C coupled products using multifunctional materials Open
A single sorbent-catalytic (non-noble metal) material has been developed for the integrated direct air capture and catalytic conversion of captured CO 2 into C-C coupled products.
View article: Process for enhanced production of desired hydrocarbons from biologically-derived compounds and bio-oils containing cyclic compounds by opening of aromatics and naphthenic ring-containing compounds
Process for enhanced production of desired hydrocarbons from biologically-derived compounds and bio-oils containing cyclic compounds by opening of aromatics and naphthenic ring-containing compounds Open
A system and process for processing biologically-derived compounds or a complex bio-oil by converting cyclic compounds in a complex bio-oil or biologically-derived compounds to desired materials such as high molecular weight paraffins with…
View article: Integrated capture and conversion of CO<sub>2</sub> to methane, methanol, or methanol and glycol
Integrated capture and conversion of CO<sub>2</sub> to methane, methanol, or methanol and glycol Open
A process for producing methane or methanol includes combining a hydrogenation catalyst, hydrogen, and CO2 with a condensed phase solution comprising an amine under conditions effective to form methane or methanol, and water. A process for…
View article: Customization for Current Market Applications of the Carbon Nanotubes Produced by PNNL’s Regenerable Catalytic Pyrolysis (ReCaP) for Scaled Hydrogen Production
Customization for Current Market Applications of the Carbon Nanotubes Produced by PNNL’s Regenerable Catalytic Pyrolysis (ReCaP) for Scaled Hydrogen Production Open
Here, we demonstrated the Regenerative Catalytic Pyrolysis (ReCaP) process that generates carbon dioxide-free hydrogen (CO2-free H2) from inexpensive and domestically abundant natural gas (NG), while simultaneously producing H2 at net prod…
View article: Mechanistic insights to drive catalytic hydrogenation of formamide intermediates to methanol via deaminative hydrogenation
Mechanistic insights to drive catalytic hydrogenation of formamide intermediates to methanol via deaminative hydrogenation Open
Amine-promoted hydrogenation of CO 2 to methanol typically proceeds via a formamide intermediate when amines are used as additives or if the hydrogenation is performed in carbon capture solvents. The catalysts used for the hydrogenation of…
View article: Direct conversion of syngas to lower olefins precursors of jet fuel and chemicals
Direct conversion of syngas to lower olefins precursors of jet fuel and chemicals Open
This study investigates the direct conversion of syngas to olefins as a pathway to produce sustainable aviation fuels. This approach combines methanol/ dimethyl ether synthesis with methanol-to-olefins into one unit operation to avoid the …
View article: Process for conversion of levulinic acid to ketones
Process for conversion of levulinic acid to ketones Open
A method for generating desired platform chemicals from feedstocks such as cellulosic biomass feedstocks containing levulinic acid by decarboxylating a feed stock comprising levulinic acid to generate ketones. This is done by passing a fee…
View article: Single-reactor conversion of ethanol to 1-/2-butenes
Single-reactor conversion of ethanol to 1-/2-butenes Open
A simplified processes for producing desired chemicals such as butenes from feedstock mixtures containing ethanol. In one set of embodiments this is performed in a single step, wherein a feed containing ethanol in a gas phase is passed ove…
View article: Single step conversion of ethanol to butadiene
Single step conversion of ethanol to butadiene Open
A process for producing 1,3-butadiene (BD) from ethanol in a single step by s7passing a mixture containing ethanol in a gas phase over a multifunctional catalyst having a transition metal dispersion of at least 30% on a silica metal oxide …
View article: Production of 1,3-Butadiene from Renewable Oxygenated Feedstocks (Abstract)
Production of 1,3-Butadiene from Renewable Oxygenated Feedstocks (Abstract) Open
Reproduce and ascertain additional experimental catalyst performance data for 1-step conversion of oxygenated feedstocks to butadiene. Experimental data will also be obtained for a 2-step processing configuration where we will tailor the P…
View article: Catalytic conversion of ethanol to 1-/2-butenes
Catalytic conversion of ethanol to 1-/2-butenes Open
Simple and economical conversion of aqueous ethanol feed streams into butenes by a single step method using transition metal oxides on a silica supports under preselected processing conditions. By directly producing a C4-rich olefin mixtur…
View article: Integrated capture and conversion of CO<sub>2</sub> to methanol or methanol and glycol
Integrated capture and conversion of CO<sub>2</sub> to methanol or methanol and glycol Open
A process for producing methanol includes combining a hydrogenation catalyst, hydrogen, and CO2 with a condensed phase solution comprising an amine under conditions effective to form methanol and water. A process for coproduction of methan…
View article: Alcohol synthesis from CO or CO.sub.2
Alcohol synthesis from CO or CO.sub.2 Open
Methods for producing alcohols from CO or CO.sub.2 and H.sub.2 utilizing a palladium-zinc on alumina catalyst are described. Methods of synthesizing alcohols over various catalysts in microchannels are also described. Ethanol, higher alcoh…
View article: Methods and compositions for microwave catalytic ammonia synthesis
Methods and compositions for microwave catalytic ammonia synthesis Open
In one aspect, the disclosure relates to relates to heterogeneous catalysts useful for the synthesis of ammonia under microwave irradiation, processes for preparing the disclosed heterogeneous catalysts, and processes for synthesizing ammo…
View article: Solar thermochemical processing system and method
Solar thermochemical processing system and method Open
A solar thermochemical processing system is disclosed. The system includes a first unit operation for receiving concentrated solar energy. Heat from the solar energy is used to drive the first unit operation. The first unit operation also …
View article: Dimethyl ether production from methanol and/or syngas
Dimethyl ether production from methanol and/or syngas Open
Disclosed are methods for producing dimethyl ether (DME) from methanol and for producing DME directly from syngas, such as syngas from biomass. Also disclosed are apparatus for DME production. The disclosed processes generally function at …
View article: Promotional role of NiCu alloy in catalytic performance and carbon properties for CO<sub>2</sub>-free H<sub>2</sub> production from thermocatalytic decomposition of methane
Promotional role of NiCu alloy in catalytic performance and carbon properties for CO<sub>2</sub>-free H<sub>2</sub> production from thermocatalytic decomposition of methane Open
The addition of Cu to Ni inhibits catalyst deactivation and changes carbon co-product morphology during the thermocatalytic decomposition of methan.
View article: Effect of alkali metal addition on catalytic performance of Ag/ZrO<sub>2</sub>/SBA-16 catalyst for single-step conversion of ethanol to butadiene
Effect of alkali metal addition on catalytic performance of Ag/ZrO<sub>2</sub>/SBA-16 catalyst for single-step conversion of ethanol to butadiene Open
Alkali addition to a Ag/ZrO 2 /SBA-16 system for ethanol to butadiene affects a beneficial decrease in Lewis acid sites, mitigating ethanol dehydration. This results in remarkable butadiene selectivity and superior productivity over the li…