Vorwort der Herausgeber

Ohne Zusammenfassung     

Electrodeposition of palladium-dotted nickel nanowire networks as a robust self-supported methanol electrooxidation catalyst

Journal of Materials Science - Mass activity and long-term stability are two major issues in current fuel cell catalyst designs. While supported catalysts normally suffer from poor long-term...     

A Comprehensive Indoor and Outdoor Aging of the Cross-Linked EVA Encapsulant Material for Photovoltaic Conversion

The goal of this research is to better understand the effect of aging on thermal relaxations, physical properties, and thermo-mechanical properties of the cross-linked EVA. The results suggest that for the aged EVA, recrystallization due to the UV photo-degradation is the dominant physical process occurring during indoor aging. The aged EVA shows clear evidence several additional secondary melting peaks, as well as changes in the main melting region. Higher temperature levels during outdoor exposure caused greater changes in the polymer morphology, which led to stiffening of the polymer and solar cell delamination due to adhesion loss of the packaging system.     

Isobutanol from synthesis gas

A highly active and selective Zr-Zn-Mn-Li-Pd catalyst for the one-step synthesis of 2-methyl-1-propanol (isobutanol) from synthesis gas is described. This catalyst produces 60 wt% isobutanol at a rate of 740 g isobutanol per liter catalyst and hour. The catalyst was optimized by a statistical method indicating that during catalyst preparation pH and temperature control are essential.Abbreviations GHSV gas hourly, space velocity defined as volume incoming syngas/volume catalyst and hour at standard conditions - MTBE methyl tert. butyl ether     

Simulation einer flexiblen Montageanlage mit Simulationssystemen unterchiedlicher Konzeption

Zusammenfassung An einer flexiblen Montageanlage werden zur Simulation der logischen Abl?ufe mehrere Simulationssysteme eingesetzt, die auf unterschiedlichen Konzepten beruhen. Ihr prinzipieller Aufbau sowie die je nach Konzept verschiedenen M?glichkeiten der Modellbildung und Simulation werden anhand dieses Einsatzfalles untersucht.