Interactions of quartz, zircon sand and stainless steel with ammonia: implications for the measurement of ammonia at high temperatures

Quartz and stainless steel are widely used as materials for the construction of bench-scale coal pyrolysis reactors. Similarly, silica and zircon sands are often used as fluidized heating media in benchscale fluidized-bed reactors. In a study, it is found that quartz, zircon and sand and stainless steel can reduce significantly gas phase concentrations of NH ₃ at temperatures about 700°C. Alternatively, the interactions between NH ₃ and surfaces need to be evaluated under relevant conditions.