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Ru–CeO2 and Ni–CeO2 Coated on Open-Cell Metallic Foams by Electrodeposition for the CO2 Methanation
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-02-24 , DOI: 10.1021/acs.iecr.0c06024 Phuoc Hoang Ho 1 , Giancosimo Sanghez de Luna 1 , Arturo Poggi 1 , Monica Nota 1 , Enrique Rodríguez-Castellón 2 , Giuseppe Fornasari 1 , Angelo Vaccari 1 , Patricia Benito 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-02-24 , DOI: 10.1021/acs.iecr.0c06024 Phuoc Hoang Ho 1 , Giancosimo Sanghez de Luna 1 , Arturo Poggi 1 , Monica Nota 1 , Enrique Rodríguez-Castellón 2 , Giuseppe Fornasari 1 , Angelo Vaccari 1 , Patricia Benito 1
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CO2 methanation structured catalysts, made by a layer of Ru–CeO2 or Ni–CeO2 (Ru/Ce = 3/97; Ni/Ce = 1/3 and 3/1) on open-cell NiCrAl foams, are prepared by electrodeposition and a subsequent calcination step. The performance of the catalysts at a space velocity of 320,000 mL gcat–1 h–1 in a feedstock with H2/CO2/N2 = 4/1/1 v/v, significantly depends on the Ni content and the preparation method. A low Ru or Ni content promotes the metal–CeO2 interaction, the formation of defects in CeO2 as well as the development of a lower amount of cracks in the coating; however, the catalysts show a poor CO2 conversion and selectivity to CH4. The CH4 production rate at low temperature largely increases for the high Ni loaded catalyst, 68.7 LCH4 gNi–1 h–1 at 350 °C oven temperature. This productivity is similar to the value obtained with a Ni3Ce1 pellet catalyst prepared by the coprecipitation method, a behavior not achievable for low Ru- and Ni-loaded catalysts.
中文翻译：
通过电沉积在开孔金属泡沫上涂覆Ru–CeO 2和Ni–CeO 2进行CO 2甲烷化
制备由开孔NiCrAl泡沫上的一层Ru–CeO 2或Ni–CeO 2（Ru / Ce = 3/97； Ni / Ce = 1/3和3/1）制成的CO 2甲烷化结构催化剂通过电沉积和随后的煅烧步骤。在H 2 / CO 2 / N 2 = 4/1/1 v / v的原料中，空速为320,000 mL g cat –1 h –1时，催化剂的性能很大程度上取决于Ni的含量和制备方法。方法。较低的Ru或Ni含量会促进金属与CeO 2的相互作用，并在CeO 2中形成缺陷以及在涂层中产生较少量的裂纹；然而，催化剂显示出差的CO 2转化率和对CH 4的选择性。对于高Ni负载催化剂，在350°C烘箱温度下，低温下CH 4的生产率会大大提高，即68.7 L CH4 g Ni –1 h –1。该生产率类似于通过共沉淀法制得的Ni3Ce1颗粒催化剂获得的值，这对于低Ru和Ni负载的催化剂而言是无法实现的。
更新日期：2021-02-24
中文翻译：
通过电沉积在开孔金属泡沫上涂覆Ru–CeO 2和Ni–CeO 2进行CO 2甲烷化
制备由开孔NiCrAl泡沫上的一层Ru–CeO 2或Ni–CeO 2（Ru / Ce = 3/97； Ni / Ce = 1/3和3/1）制成的CO 2甲烷化结构催化剂通过电沉积和随后的煅烧步骤。在H 2 / CO 2 / N 2 = 4/1/1 v / v的原料中，空速为320,000 mL g cat –1 h –1时，催化剂的性能很大程度上取决于Ni的含量和制备方法。方法。较低的Ru或Ni含量会促进金属与CeO 2的相互作用，并在CeO 2中形成缺陷以及在涂层中产生较少量的裂纹；然而，催化剂显示出差的CO 2转化率和对CH 4的选择性。对于高Ni负载催化剂，在350°C烘箱温度下，低温下CH 4的生产率会大大提高，即68.7 L CH4 g Ni –1 h –1。该生产率类似于通过共沉淀法制得的Ni3Ce1颗粒催化剂获得的值，这对于低Ru和Ni负载的催化剂而言是无法实现的。
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