Browsing by Author "Dauenhauer, Paul J"

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    Data for Process Design and Economic Analysis of Renewable Isoprene from Biomass via Mesaconic Acid
    (2019-02-13) Dauenhauer, Paul J; Lundberg, Daniel J; Lundberg, David J; hauer@umn.edu; Dauenhauer, Paul J; Dauenhauer Research Laboratory - Chemical Engineering and Materials Science
    The data contain the process design and economic information for the design and optimization of a chemical process to manufacture isoprene from biomass via mesaconic intermediate.
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    Data for: Catalytic Resonance Theory: Negative Dynamic Surfaces for Programmable Catalysts
    (2021-08-14) Gathmann, Sallye R; Ardagh, M Alexander; Dauenhauer, Paul J; hauer@umn.edu; Dauenhauer, Paul J; Dauenhauer Group
    Catalysts that change with time via programmed variation of their electronic occupation to accelerate surface reactions were evaluated in the case of negative adsorption energy scaling relations. Defined as the relative change in adsorption enthalpy, the gamma linear scaling parameter is negative when two adsorbates alternatively weaken and strengthen as catalysts are electronically perturbed. Simulations were conducted of a single transition state connecting two generic adsorbates representative of multiple reaction classes to understand the resulting negative gamma catalytic ratchet mechanism and its ability to accelerate catalytic reactions above the Sabatier peak and away from equilibrium. Relative to conventional positive gamma catalytic ratchets, the Sabatier volcanoes of negative gamma catalysis are narrower with greater enhancement of dynamic turnover frequency when catalysts are electronically oscillated. Promotion of the catalytic surface reaction forwards or backwards was predictable by a descriptor accounting for the relative rates of forward and reverse kinetics under oscillatory conditions.
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    Data Set for Quantifying the Vices and Virtues of Snakes and Ladders Through Time
    (2023-06-27) Dauenhauer, Eleanor A; Dauenhauer, Paul J; hauer@umn.edu; Dauenhauer, Paul J; University of Minnesota Dauenhauer Research Laboratory
    The game of Gyan Chauper or ‘snakes and ladders’ exists in many forms throughout history as a board game of varying size, structure, and game elements of snakes and ladders associated with various vices and virtues inscribed within the board. Here, three boards were analyzed via Monte Carlo simulation, including the 1998 Milton Bradley version, the 72-square Vaisnava board, and the 84-square Jaina board, with the goal of understanding the relationships between board design and associated behaviors and spiritual concepts. Game play on each board was simulated 100,000 times with variations that included individual removal of a snake or ladder, thereby quantifying the importance of that element towards achieving victory. Comparison of the weighted importance of each game element and associated vice and virtue then permitted analysis of their importance for the game designer and their associated culture.