Performance of Al2O3 loaded Cu-Al hydrotalcite-like oxides in adsorption and decomposition of NOx
BAI Wen-lei1, LIU Wei-jun1, HAO Zai-bing1, ZHANG Bo-ru1, ZHANG Shu-hua2
1. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; 2. College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
Abstract: Copper-aluminum hydrotalcite is made via hydrothermal method,then is roasted at 500℃ to prepare Cu-Al complex oxides that is characterized by X-ray diffraction and infrared-red spectrum.The prepared Cu-Al composite oxide is loaded onto the surface of spherical Al2O3 carrier with a diameter between 3 mm and 5 mm,and the sample is evaluated in the experiments about NO adsorption and heat endurance.The experimental results show that NO,O2 and water steam forms HNO3 on the surface of Cu-Al complex oxides,then HNO3 reacts with CuO in Cu-Al composite oxides to form Cu(NO3)2,and the adsorption efficiency can reach 28%.NOx,with NO as the main body,can be released when the product is roasted at a high temperature,and the structure of the former metal oxides can be restored.The adsorbed compounds will return to the original hydrotalcite-like layered structure after a few days of static storage.
拜文磊, 刘伟军, 郝再兵, 张博儒, 张书华. Al2O3负载型Cu-Al类水滑石氧化物的NOx吸附及分解性能[J]. 现代化工, 2019, 39(5): 137-140,142.
BAI Wen-lei, LIU Wei-jun, HAO Zai-bing, ZHANG Bo-ru, ZHANG Shu-hua. Performance of Al2O3 loaded Cu-Al hydrotalcite-like oxides in adsorption and decomposition of NOx. Modern Chemical Industry, 2019, 39(5): 137-140,142.
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