TY - GEN A1 - Schöneich, Michael A1 - Lorenz, Tobias A1 - Bawohl, Melanie A1 - Nilges, Tom A1 - Schmidt, Peer T1 - Phase Formation in the System Hg/P/I Induced by Evaporation Pressure T2 - Zeitschrift für Anorganische und Allgemeine Chemie KW - High-temperature Gas-balance Y1 - 2010 UR - http://onlinelibrary.wiley.com/doi/10.1002/zaac.201009042/full U6 - https://doi.org/10.1002/zaac.201009042 N1 - Poster VL - 636 IS - 11 SP - S. 2070 ER - TY - GEN A1 - Schöneich, Michael A1 - Schmidt, Peer T1 - Kinetics of phase formation in solid - gas reactions: Iron and Arsenic T2 - Zeitschrift für Anorganische und Allgemeine Chemie N2 - Based on the experience of thermo-chemical studies on a High-Temperature Gas-Balance a time dependent analysis has been developed for the investigations of the kinetics of solid-gas reactions. The course of solid-gas reactions can be examined unambiguously by separation of the initial solids. By this setup the visualization of different stages of solid-gas reaction (vaporization, phase formation) becomes feasible. Time dependent analysis of the formation of FeAs results in an assignment of the underlying principles of kinetics derived from the conversion factor α. KW - Arsenic KW - High-temperature Gas-balance KW - Thermal analysis Y1 - 2012 UR - http://onlinelibrary.wiley.com/doi/10.1002/zaac.201204026/full U6 - https://doi.org/10.1002/zaac.201204026 VL - 638 IS - 10 SP - S. 1579 ER - TY - GEN A1 - Schmidt, Peer A1 - Schöneich, Michael A1 - Nilges, Tom A1 - Weihrich, Richard T1 - Identification of Metastable States in Heterogeneous Phase Formation T2 - Zeitschrift für Anorganische und Allgemeine Chemie KW - Phosphorus KW - High-temperature Gas-balance Y1 - 2012 UR - http://onlinelibrary.wiley.com/doi/10.1002/zaac.201204134/full U6 - https://doi.org/10.1002/zaac.201204134 N1 - Poster VL - 638 IS - 10 SP - S. 1633 ER - TY - GEN A1 - Scholz, Tanja A1 - Schöneich, Michael A1 - Schmidt, Peer T1 - Understanding Solid-State Phase-Formation Processes by Usingthe High-Temperature Gas Balance: The Example of Zr₂PTe₂ T2 - European Journal of Inorganic Chemistry N2 - Inorganic solid-state synthesis with phosphorus and tellurium requires a careful control of the reaction parameters because of the high volatility of the components. This initial disadvantage can be used as a benefit for the investigation of phase formation mechanisms by analyzing the individual vapor pressure behavior. The high-temperature gas-balance is introduced as a device for detection of heterogeneous solid-gas equilibria in closed reaction systems. The experimentally challenging synthesis of the phosphide telluride Zr₂PTe₂ is examined as a model system: optimized synthesis runs at lower temperatures (ϑ = 650 °C) in a faster time, while the quantity as well as the crystalline powder quality is increased. A stepwise solid-solid reaction of zirconium and tellurium according to Ostwald's rule of stages and the shrinking core model is revealed while phosphorus sublimes and subsequently condenses to react to the ternary compound. Additional phenomena such as melting, expansion, and mechanical instabilities can be observed that broaden the possibilities of the gas- balance. KW - Thermal analysis KW - High-temperature Gas-balance KW - Chalcogenides KW - Phosphide telluride Y1 - 2019 UR - https://onlinelibrary.wiley.com/doi/full/10.1002/ejic.201900281 U6 - https://doi.org/10.1002/ejic.201900281 IS - 21 SP - 2577 EP - 2582 ER -