Christopher J. Janke
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View article: Performance Degradation of Amine-Infused Fiber Sorbents for Direct Air Capture: Mechanisms and Solutions
Performance Degradation of Amine-Infused Fiber Sorbents for Direct Air Capture: Mechanisms and Solutions Open
Sorbent stability poses significant impacts on long-term performance of direct air capture (DAC) of CO2 and levelized cost of capture (LCOC). We report the DAC performance degradation of amine-infused fiber sorbents based on poly-(ethyleni…
View article: “Hybridizing heat-integrated 3D printed modules with mass manufacturable, low pressure drop fiber sorbents” (Final Report)
“Hybridizing heat-integrated 3D printed modules with mass manufacturable, low pressure drop fiber sorbents” (Final Report) Open
The overall objective of this proposal was to research, develop, and evaluate a modular direct air capture (DAC) system that is simple and scalable. This system was based on the adsorption of CO2 into commercial polyamines supported by por…
View article: A multifunctional rooftop unit for direct air capture
A multifunctional rooftop unit for direct air capture Open
Direct air capture (DAC), which captures CO 2 from ambient air, is a critical technology to reduce greenhouse gases in the atmosphere in order to avoid climate disasters.
View article: Amidoxime-functionalized materials and their use in extracting metal ions from liquid solutions
Amidoxime-functionalized materials and their use in extracting metal ions from liquid solutions Open
A method of producing a functionalized material that extracts metal ions from solution, the method comprising: (i) providing a precursor material having nitrile groups appended to its surface; and (ii) reacting said nitrile groups with hyd…
View article: Method of solvent-free manufacturing of composite electrodes incorporating radiation curable binders
Method of solvent-free manufacturing of composite electrodes incorporating radiation curable binders Open
A method of making an electrode includes the step of mixing active material particles, radiation curable resin precursors, and electrically conductive particles to create an electrode precursor mixture. The electrode precursor mixture is e…
View article: Fiber-based adsorbents having high adsorption capacities for recovering dissolved metals and methods thereof
Fiber-based adsorbents having high adsorption capacities for recovering dissolved metals and methods thereof Open
A fiber-based adsorbent and a related method of manufacture are provided. The fiber-based adsorbent includes polymer fibers with grafted side chains and an increased surface area per unit weight over known fibers to increase the adsorption…
View article: Powder-based adsorbents having high adsorption capacities for recovering dissolved metals and methods thereof
Powder-based adsorbents having high adsorption capacities for recovering dissolved metals and methods thereof Open
A powder-based adsorbent and a related method of manufacture are provided. The powder-based adsorbent includes polymer powder with grafted side chains and an increased surface area per unit weight to increase the adsorption of dissolved me…
View article: Foam-based adsorbents having high adsorption capacities for recovering dissolved metals and methods thereof
Foam-based adsorbents having high adsorption capacities for recovering dissolved metals and methods thereof Open
Foam-based adsorbents and a related method of manufacture are provided. The foam-based adsorbents include polymer foam with grafted side chains and an increased surface area per unit weight to increase the adsorption of dissolved metals, f…
View article: High energy electron beam curing of epoxy resin systems incorporating cationic photoinitiators
High energy electron beam curing of epoxy resin systems incorporating cationic photoinitiators Open
A mixture of epoxy resins such as a semi-solid triglycidyl ether of tris (hydroxyphenyl) methane and a low viscosity bisphenol A glycidyl ether and a cationic photoinitiator such as a diaryliodonium salt is cured by irradiating with a dosa…
View article: System for determining biofuel concentration
System for determining biofuel concentration Open
A measurement device or system configured to measure the content of biofuels within a fuel blend. By measuring a state of a responsive material within a fuel blend, a biofuel content of the fuel blend may be measured. For example, the solu…
View article: Toughened epoxy resin system and a method thereof
Toughened epoxy resin system and a method thereof Open
Mixtures of epoxy resins with cationic initiators are curable under high energy ionizing radiation such as electron beam radiation, X-ray radiation, and gamma radiation. The composition of this process consists of an epoxy resin, a cationi…
View article: Ionizing radiation post-curing of objects produced by stereolithography and other methods
Ionizing radiation post-curing of objects produced by stereolithography and other methods Open
An object comprised of a curable material and formed by stereolithography or another three-dimensional prototyping method, in which the object has undergone initial curing, is subjected to post-curing by ionizing radiation, such as an elec…
View article: Compatibility of Fuel System Elastomers and Plastics with a Fast-Pyrolysis Oil (Bio-oil) at Room Temperature
Compatibility of Fuel System Elastomers and Plastics with a Fast-Pyrolysis Oil (Bio-oil) at Room Temperature Open
Herein the compatibility of a fast-pyrolysis bio-oil with 17 elastomer and 21 plastic materials common to fuel storage, dispensing, and delivery systems was assessed by measuring volume and hardness. Diesel was used as the baseline for com…
View article: Impact of Biodiesel, Renewable Diesel, 1-Octanol, Dibutoxymethane, n-Undecane, Hexyl hexanoate and 2-Nonanone with Infrastructure Plastics as Blends with Diesel
Impact of Biodiesel, Renewable Diesel, 1-Octanol, Dibutoxymethane, n-Undecane, Hexyl hexanoate and 2-Nonanone with Infrastructure Plastics as Blends with Diesel Open
In this study the volume and hardness were measured for thermoplastics and thermosetting resins with diesel containing up to 30% of the following blend stocks: biodiesel, renewable diesel, n-undecane, dibutoxymethane, 1-octanol, hexyl hexa…
View article: Ion and Electron Momentum Distributions from Single and Double Ionization of Helium Induced by Compton Scattering
Ion and Electron Momentum Distributions from Single and Double Ionization of Helium Induced by Compton Scattering Open
We present the momentum distributions of the nucleus and of the electrons from double ionization of the helium atom by Compton scattering of photons with hν=40 keV. We find that the doubly charged ion momentum distribution is very close to…
View article: On the Mechanism of the Steady-State Gamma Radiolysis-Induced Scissions of the Phenyl-Vinyl Polyester-Based Resins
On the Mechanism of the Steady-State Gamma Radiolysis-Induced Scissions of the Phenyl-Vinyl Polyester-Based Resins Open
The major societal problem of polymeric waste necessitates new approaches to break down especially challenging discarded waste streams. Gamma radiation was utilized in conjunction with varying solvent environments in an attempt to discern …
View article: Investigating charge-up and fragmentation dynamics of oxygen molecules after interaction with strong X-ray free-electron laser pulses
Investigating charge-up and fragmentation dynamics of oxygen molecules after interaction with strong X-ray free-electron laser pulses Open
The X-ray-induced charge-up and fragmentation process of a small molecule is examined in great detail by measuring the molecular-frame photoelectron interference pattern in conjunction with other observables in coincidence.
View article: Strategies toward the Synthesis of Advanced Functional Sorbent Performance for Uranium Uptake from Seawater
Strategies toward the Synthesis of Advanced Functional Sorbent Performance for Uranium Uptake from Seawater Open
A polymer fiber-based adsorbent (AF1) composed of acrylonitrile and itaconic acid functional groups was synthesized by a radiation-induced graft polymerization technique onto hollow-gear shaped polyethylene (PE) fibers. Investigation of th…
View article: Fourfold Differential Photoelectron Circular Dichroism
Fourfold Differential Photoelectron Circular Dichroism Open
We report on a joint experimental and theoretical study of photoelectron circular dichroism (PECD) in methyloxirane. By detecting O 1s photoelectrons in coincidence with fragment ions, we deduce the molecule's orientation and photoelectron…
View article: The compatibility performance of fuel system elastomers with two dioxolane molecules as blends with diesel
The compatibility performance of fuel system elastomers with two dioxolane molecules as blends with diesel Open
The compatibility of 17 elastomers with two dioxolane molecules was assessed by volume change and hardness measurements. Each molecule was blended with diesel in concentrations of 0, 10, 20 and 30 wt.%. The elastomers included two fluoroca…
View article: Compatibility of Biologically Derivable Alcohols, Alkanes, Esters, Ketones, and an Ether as Diesel Blendstocks with Fuel System Elastomers
Compatibility of Biologically Derivable Alcohols, Alkanes, Esters, Ketones, and an Ether as Diesel Blendstocks with Fuel System Elastomers Open
The compatibility of 11 bioderivable diesel blendstocks with 17 elastomer materials common to fuel storage, dispensing, and delivery systems was evaluated though volume and hardness measurements. The blendstocks included two alcohols (1-oc…
View article: Strong Differential Photoion Circular Dichroism in Strong-Field Ionization of Chiral Molecules
Strong Differential Photoion Circular Dichroism in Strong-Field Ionization of Chiral Molecules Open
We investigate the differential ionization probability of chiral molecules in the strong-field regime as a function of the helicity of the incident light. To this end, we analyze the fourfold ionization of bromochlorofluoromethane (CHBrClF…
View article: Performance of Vehicle Fuel System Elastomers and Plastics with Test Fuels Representing Gasoline Blended with 10% Ethanol (E10) and 16% Isobutanol (iBu16)
Performance of Vehicle Fuel System Elastomers and Plastics with Test Fuels Representing Gasoline Blended with 10% Ethanol (E10) and 16% Isobutanol (iBu16) Open
The compatibilities of fuel system elastomers and plastics were evaluated for test fuels containing 16 vol.% isobutanol (iBu16) and 10 vol.% ethanol (E10). Elastomers included two fluorocarbons, four acrylonitrile butadiene rubbers (NBRs),…
View article: Compatibility of Elastomers with Polyoxymethylene Dimethyl Ethers and Blends with Diesel
Compatibility of Elastomers with Polyoxymethylene Dimethyl Ethers and Blends with Diesel Open
Polyoxymethylene dimethyl ethers (PODEs) have shown promise as candidates for diesel fuel blendstocks due to their low sooting tendency, high cetane number, and diesel-comparable boiling point range. However, there is a lack of literature …
View article: A highly efficient uranium grabber derived from acrylic fiber for extracting uranium from seawater
A highly efficient uranium grabber derived from acrylic fiber for extracting uranium from seawater Open
An amidoxime and carboxylate containing chelating adsorbent derived from acrylic fiber shows a fast adsorption rate and high uranium and low vanadium adsorption capacities in real seawater tests.
View article: Solubility and volume swell of fuel system elastomers with ketone blends of E10 gasoline and blendstock for oxygenate blending (BOB)
Solubility and volume swell of fuel system elastomers with ketone blends of E10 gasoline and blendstock for oxygenate blending (BOB) Open
The compatibility of key infrastructure elastomers with five ketone molecules was assessed via solubility studies and volume swell measurements. The elastomer materials included two fluorocarbons, six acrylonitrile butadiene rubbers (NBRs)…
View article: Angular streaking in strong field ionization of chiral molecules
Angular streaking in strong field ionization of chiral molecules Open
We report on a chiral observable upon ionization of a chiral molecule (methyloxirane) by a strong elliptically polarized laser field: a rotation of the photoelectron momentum distribution, which is enantiosensitive and forward/backward asy…