NO x storage and reduction (NSR) technology has been regarded as one of the most promising strategies for the removal of nitric oxides (NO x ) from lean-burn engines, and the potential of the plasma catalysis method for NO x reduction has been confirmed in the past few decades. This work reports the NSR of nitric oxide (NO) by combining non-thermal plasma (NTP) and Co/Pt/Ba/γ-Al2O3 (Co/PBA) catalyst using methane as a reductant. The experimental results reveal that the NO x conversion of NSR assisted by NTP is notably enhanced compared to the catalytic efficiency obtained from NSR in the range of 150 °C–350 °C, and NO x conversion of the 8% Co/PBA catalyst reaches 96.8% at 350 °C. Oxygen (O2) has a significant effect on the removal of NO x , and the NO x conversion increases firstly and then decreases when the O2 concentration ranges from 2% to 10%. Water vapor reduces the NO x storage capacity of Co/PBA catalysts on account of the competition for adsorption sites on the surface of Co/PBA catalysts. There is a negative correlation between sulfur dioxide (SO2) and NO x conversion in the NTP system, and the 8% Co/PBA catalyst exhibits higher NO x conversion compared to other catalysts, which shows that Co has a certain SO2 resistance.

The total coal consumption in China is on the rise. The characteristics of CO 2 and SO 2 emissions in the whole process of coal processing and utilization in China are worthy of study. Based on the five links of the whole process of coal production and utilization, including coal production, raw coal processing, logistics and transportation, conversion and utilization and resource utilization, this paper summarized and analyzed the energy consumption and pollutant emission sources of these five links, combined with the US Environmental Protection Agency's AP-42 method and IPCC method, to calculate total pollutant discharge and emission factors, where the emission factors were corrected by conversion efficiency. At the same time, uncertainty analysis is performed about CO 2 and SO 2 emissions. The results showed that CO 2 emissions were 3.657 billion tons, and emission reductions were 61 million tons, and SO 2 emissions were 4,844,500 tons, and emission reductions were 10.3595 million tons in 2015.

In the original publication, there were few amendments to be made.