Metal-support interactions in Fe-Cu-K admixed with SAPO-34 catalysts for highly selective transformation of CO2 and H-2 into lower olefins
文献类型：期刊论文
| 作者 | Ding, Jie; Liu, Qiang; Ye, Run-ping; Gong, Weibo; Zhang, Fan; He, Xiang; Zhang, Yulong; Zhong, Qin; Argyle, Morris D.; Fan, Maohong |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2021 |
| 卷号 | 9期号:38页码:21877-21887 |
| 英文摘要 | Direct conversion of greenhouse gas carbon dioxide (CO2) into lower olefins (ethylene, propylene and butene) provides an appealing approach to tackle CO2 emission challenges. Admixed catalysts composed of metal/metal oxides and SAPO-34 have been widely used for catalytic CO2 hydrogenation to lower olefins. However, interactions between metal/metal oxides and SAPO-34 remain obscure. Here, a novel family of admixed catalysts composed of Fe-Cu-K and SAPO-34 (Fe-Cu-K/SAPO) is developed for efficient catalytic CO2 hydrogenation to lower olefins, which can achieve 49.7% CO2 conversion and 62.9% selectivity of lower olefins, with CO selectivity <10%, over the optimal Fe0.45Cu0.45K0.10/SAPO-34 (with 1/1 mass ratio) catalyst. This exceptional performance is attributed to the change of structures, reducible properties and mass transfer resulting from strong interactions between metal/metal oxides and zeolites. First, SAPO-34 promotes the exposure of the active Cu-Fe (100) plane via disrupting the oriented growth process of Fe-Cu-K. Second, SAPO-34 boosts the reducible properties of Fe-Cu-K/SAPO-34, promoting CO2 adsorption and dissociation and thus resulting in the formation of theta-Fe3C active sites for hydrocarbon formation. Finally, the main mass transfer method of long-chain hydrocarbons/methanol from Fe-Cu-K to SAPO-34 is gas diffusion, and the dispersion of Fe-Cu-K over SAPO-34 accelerates such gas diffusion. This study provides a potential novel pathway to solve the challenge of efficiently converting CO2 into lower olefins and clarifies the effect of strong interactions between metal/metal oxides and zeolites on activities. |
| 源URL | [http://159.226.73.51/handle/332005/20430]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Ding, Jie,Liu, Qiang,Ye, Run-ping,et al. Metal-support interactions in Fe-Cu-K admixed with SAPO-34 catalysts for highly selective transformation of CO2 and H-2 into lower olefins[J]. JOURNAL OF MATERIALS CHEMISTRY A,2021,9(38):21877-21887. |
| APA | Ding, Jie.,Liu, Qiang.,Ye, Run-ping.,Gong, Weibo.,Zhang, Fan.,...&Fan, Maohong.(2021).Metal-support interactions in Fe-Cu-K admixed with SAPO-34 catalysts for highly selective transformation of CO2 and H-2 into lower olefins.JOURNAL OF MATERIALS CHEMISTRY A,9(38),21877-21887. |
| MLA | Ding, Jie,et al."Metal-support interactions in Fe-Cu-K admixed with SAPO-34 catalysts for highly selective transformation of CO2 and H-2 into lower olefins".JOURNAL OF MATERIALS CHEMISTRY A 9.38(2021):21877-21887. |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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