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Addition of Ce in Cu/Three‐Dimensional Graphene Derived from Watermelon for Low Temperature NH3‐SCR
ChemistrySelect ( IF 2.1 ) Pub Date : 2020-01-24 , DOI: 10.1002/slct.201904519
Yan Kang 1 , Zhifang Li 2, 3 , Jinxing Cui 2, 3 , Cui Geng 1 , Chao Zhang 1 , Peng Li 1 , Changlong Yang 1, 2, 3
Affiliation  

In this paper, 3‐Dimensional Graphene (3DG) prepared by watermelon was used as the supporter to synthesize Cu/3DG, Ce/3DG and Cu−Ce/3DG catalysts by the hydrothermal method, after which they were also investigated in NH3‐SCR. Synergistic mechanism between Ce and Cu was further explored. Experimental results indicated that the three catalysts all exhibited excellent low‐temperature nitrogen oxide reduction activity which reached 99 % and remained unchanged in the range of 250–400 °C. 2Cu‐3Ce/3DG displayed optimal NOx conversion rate, namely, its activity reached 92.9 % at 200 °C that mainly attributed to the increase of the Cu+, Ce3+ and the form of the abundant acid sites. Moreover, the sulfur and water resistance of 2Cu‐3Ce/3DG were tested. At 250 °C, the conversion rate of NOx was increased to 99.1 %, which showed excellent sulfur resistance.

中文翻译:

用于低温NH3-SCR的西瓜衍生的Cu /三维石墨烯中Ce的添加

在本文中,3 -维石墨烯(3DG通过西瓜制备)被用作支撑物由水热法,在此之后它们进行了研究在NH合成的Cu / 3DG,CE / 3DG和Cu-CE / 3DG催化剂3 -可控硅 进一步探讨了铈与铜的协同作用机理。实验结果表明,这三种催化剂均表现出优异的低温氮氧化物还原活性,达到了99%,并且在250-400°C范围内保持不变。2CU-3CE / 3DG显示最佳NO X转化率,即,其活性在200℃下达到92.9%的是主要是归因于Cu的增加+,铈3+和丰富的酸位的形式。此外,还测试了2Cu-3Ce / 3DG的耐硫和耐水性能。在250℃下,NO的转化率X增加至99.1%,这表明优异的抗硫性。
更新日期:2020-01-24
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