Facilitation of coke gasification by coking wastewater and its degradation properties in thermochemical reactions.

The thermochemical reaction between coking wastewater and gasification-coke is a new way to achieve efficient and clean use of coal and solve the problem of coking wastewater treatment in the Gansu Longdong region. To further investigate the thermochemical reaction characteristics of coking wastewater and gasification-coke, this paper explores the effect of coking wastewater on syngas production from coke gasification at 1000 °C, the degradation effect of organic pollutants in coking wastewater, the thermochemical reactivity of gasification-coke, and the reasons why wastewater promotes coke gasification and wastewater degradation. The results showed that the thermochemical reaction of coking wastewater with gasification-coke not only facilitates the improvement of syngas yield and low-level calorific value but also improves the thermochemical reactivity of gasification-coke.

Fluorine ion induced phase evolution of tin-based perovskite thin films: structure and properties.

To study the effect of fluorine ions on the phase transformation of a tin-based perovskite, CsSnI (F) films were deposited by using thermal vacuum evaporation from a mixed powder of SnI, SnF and CsI, followed by rapid vacuum annealing. The color evolution, structure, and properties of CsSnI F films aged in air were observed and analyzed. The results showed that the colors of the films changed from black to yellow, and finally presented as black again over time; the unstable B-γ-CsSnI F phase transformed into the Y-CsSnI F phase, which is then recombined into the CsSnI F phase with the generation of SnO in air.