Browsing by Author "Dauenhauer, Paul"

Now showing 1 - 6 of 6
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    Calibration-Free Catalytic Microreactor for Analysis of Pesticides in Food
    (AMER LABORATORY-LABCOMPARE, 2016-01-01) Dauenhauer, Paul; Sapnjers, Charlie
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    Data for Catalytic Resonance Theory: Turnover Efficiency and the Resonance Frequency
    (2024-10-14) Dauenhauer, Paul; Canavan, Jesse R; Hopkins, Justin A; Foley, Brandon R; Abdelrahman, Omar A; hauer@umn.edu; Dauenhauer, Paul
    The data were collected via simulation in Matlab r2019 and used in the data Figures 1-4 of the manuscript, "Catalytic Resonance Theory: Turnover Efficiency and the Resonance Frequency"
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    Data for On the Intrinsic Reaction Kinetics of Polypropylene Pyrolysis
    (2023-04-05) Sidhu, Nathan; Mastalski, Isaac; Dauenhauer, Paul; hauer@umn.edu; Dauenhauer, Paul J; University of Minnesota Dauenhauer Laboratory
    High speed photography of polypropylene (PP) reacting on a surface varying in temperature from 525-625 deg C.
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    High Speed Photography for Manuscript "On the Method of Pulse-Heated Analysis of Solid Reactions (PHASR) for Polyolefin Pyrolysis"
    (2020-11-16) Dauenhauer, Paul; Mastalski, Isaac; Sidhu, Nathan; Zolghadr, Ali; hauer@umn.edu; Dauenhauer, Paul; Dauenhauer Laboratory - University of Minnesota
    The data contains high speed photography of high temperature (500 - 650 deg C) pyrolysis of polyolefin films including low-density polyethylene and polypropylene. This is in support of the publication entitled, "On the Method of Pulse-Heated Analysis of Solid Reactions (PHASR) for Polyolefin Pyrolysis."
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    Programmable loop directionality simulation ml data scripts models results
    (2024-12-02) Murphy, Madeline; Noordhoek, Kyle; Gathmann, Sallye; Dauenhauer, Paul; Bartel, Chris; noord014@umn.edu; Noordhoek, Kyle; University of Minnesota Design of Materials on Computers Lab - Bartel Group; University of Minnesota Dauenhauer Group
    This repository exists to share the data and scripts used in the paper "Catalytic Resonance Theory: Forecasting the Flow of Programmable Catalytic Loops" by Madeline Murphy, Kyle Noordhoek, Sallye Gathmann, Paul Dauenhauer, and Christopher Bartel. The bulk of the files are contained within the `programmable-loop-directionality` folder with additional detailed information presented in the `README.md` files of each subfolder. Here we also include zips containing each of the Random Forest models that were trained along with the full grid searches generated during the study.
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    Supporting data for "Catalysis-in-a-Box: Robotic Screening of Catalytic Materials in the Times of COVID-19 and Beyond"
    (2020-05-29) Kumar, Gaurav; Bossert, Hannah; McDonald, Dan; Chatzidimitriou, Anargyros; Ardagh, Alexander M; Pang, Yutong; Lee, ChoongSze; Tsapatsis, Michael; Abdelrahman, Omar A; Dauenhauer, Paul; hauer@umn.edu; Dauenhauer, Paul, J; Dauenhauer Research Group
    The emergence of a viral pandemic has motivated the transition away from traditional, labor-intensive materials testing techniques to new automated approaches without compromising on data quality and at costs viable for academic laboratories. Reported here is the design and implementation of an autonomous micro-flow reactor for catalyst evaluation condensing conventional laboratory-scale analogues within a single gas chromatograph (GC), enabling the control of relevant parameters including reactor temperature and reactant partial pressures directly from the GC. Inquiries into the hydrodynamic behavior, temperature control, and heat/mass transfer were sought to evaluate the efficacy of the micro-flow reactor for kinetic measurements. As a catalyst material screening example, a combination of four Brønsted acid catalyzed probe reactions, namely the dehydration of ethanol, 2-propanol, 1-butanol, and the dehydra-decyclization of 2-methyltetrahydrofuran on a solid acid HZSM-5 (Si/Al 140), were carried out in the temperature range 403-543 K for the measurement of apparent reaction kinetics. Product selectivities, proton-normalized reaction rates, and apparent activation barriers were in agreement with measurements performed on conventional packed bed flow reactors. Furthermore, the developed micro-flow reactor was demonstrated to be about ten-fold cheaper to fabricate than commercial automated laboratory-scale reactor setups and is intended to be used for kinetic investigations in vapor-phase catalytic chemistries, with the key benefits including automation, low cost, and limited experimental equipment instrumentation.