用于通过固定床H-SCR高效脱除NO的耐SO₂和促进H₂O₂氧化的Pt/C催化剂。
SO-tolerant and HO-promoting Pt/C catalysts for efficient NO removal via fixed-bed H-SCR.
作者信息
Tu Baosheng, Shi Nian, Sun Wei, Cao Limei, Yang Ji
机构信息
School of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
出版信息
Environ Sci Pollut Res Int. 2017 Jan;24(1):676-684. doi: 10.1007/s11356-016-7788-5. Epub 2016 Oct 15.
In this paper, Pt supports on carbon black powder (Vulcan XC-72) were synthesized via a hydrothermal method for selective catalytic reduction (SCR) of NO with H in the presence of 2 vol% O over a wide temperature of 20-300 °C. The results showed that the 3 and 5 wt% Pt/C catalysts resulted in high NO conversion (>90 %) over a temperature range of 120 to 300 °C, and the maximum NO conversion of 98.6 % was achieved over 5 wt% Pt/C at 120 °C. Meanwhile, the influence of SO and HO on the catalyst performance of 3 wt% Pt/C was investigated. The catalysts exhibited good SO poisoning resistance when the SO concentration was lower than 260 ppm. Moreover, a positive effect on NO conversion was detected with the addition of 3 and 5 vol% HO in the feed gas stream. Graphical abstract TEM image and good NO conversion performance of the Pt/C catalysts.
在本文中，通过水热法合成了负载在炭黑粉末（Vulcan XC - 72）上的铂，用于在2体积％氧气存在下，在20 - 300°C的宽温度范围内用氢气对NO进行选择性催化还原（SCR）。结果表明，3重量％和5重量％的Pt/C催化剂在120至300°C的温度范围内导致高NO转化率（>90％），并且在120°C下5重量％的Pt/C催化剂实现了98.6％的最大NO转化率。同时，研究了SO₂和H₂O对3重量％Pt/C催化剂性能的影响。当SO₂浓度低于260 ppm时，催化剂表现出良好的抗SO₂中毒性能。此外，在进料气流中添加3体积％和5体积％的H₂O时，检测到对NO转化率有积极影响。图形摘要Pt/C催化剂的TEM图像和良好的NO转化性能。
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