Promotional mechanism of propane on selective catalytic reduction ofNOxby methane over In/H-BEA at low temperature
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Promotional mechanism of propane on selective catalytic reduction ofNOxby methane over In/H-BEA at low temperature
- 发表刊物：
- Applied Surface Science
- 摘要：
- Effects of propane/methane ratios on NOxreduction by mixtures of methane and propane over In/H-BEAcatalyst were investigated at temperatures ranging from 250 to 550◦C. The higher catalytic activity ofIn/H-BEA was exhibited for CH4-SCR at high temperatures above 450◦C, while the higher NOxconver-sion was achieved in C3H8-SCR at below 425◦C. A broadened temperature window and enhanced CO2selectivity were achieved by combining of methane and propane as the co-reductant. The mixtures withpropane/methane of 1/2 showed the most superior T50(325◦C) and T90(500◦C) temperatures for NOxreduction over In/H-BEA catalyst. For the promotion mechanism of propane on NO reduction by methaneat low temperature, the formation of carbonaceous species (e.g. R-COOH) were enhanced by the activa-tion of C3H8on Brønsted acid sites at low temperature, and further promoted the generation of NCOspecies, which was a crucial determining step for NO reduction.
- 合写作者：
- Hua Pan, Yanfei Jian, Yanke Yu, Ningna Chen, Chi He∗, Cheng He*
- 卷号：
- 390 (2016) 608–616
- 页面范围：
- 390 (2016) 608–616
- 是否译文：
- 否
- 发表时间：
- 2016-09-01