Economical and Sustainable Synthesis of Small-Pore Chabazite Catalysts for NOx Abatement by Recycling Organic Structure- Directing Agents
文献类型：期刊论文
| 作者 | Xiong, Wuwan; Liu, Linhui; Guo, Anqi; Chen, Dongdong; Shan, Yulong; Fu, Mingli; Wu, Junliang; Ye, Daiqi; Chen, Peirong |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2023 |
| 页码 | 1-11 |
| 关键词 | SSZ-13 waste liquid TMAdaOH low cost NOx reduction |
| ISSN号 | 0013-936X |
| 英文摘要 | The application of small-pore chabazite-type SSZ-13 zeolites, key materials for the reduction of nitrogen oxides (NOx) in automotive exhausts and the selective conversion of methane, is limited by the use of expensive N,N,N-trimethyl-1-ammonium adamantine hydroxide (TMAdaOH) as an organic structure-directing agent (OSDA) during hydrothermal synthesis. Here, we report an economical and sustainable route for SSZ-13 synthesis by recycling and reusing the OSDA-containing waste liquids. The TMAdaOH concentration in waste liquids, determined by a bromocresol green colorimetric method, was found to be a key factor for SSZ-13 crystallization. The SSZ-13 zeolite synthesized under optimized conditions demonstrates similar physicochemical properties (surface area, porosity, crystallinity, Si/Al ratio, etc.) as that of the conventional synthetic approach. We then used the waste liquid-derived SSZ-13 as the parent zeolite to synthesize Cu ion-exchanged SSZ-13 (i.e., Cu-SSZ-13) for ammonia-mediated selective catalytic reduction of NOx (NH3-SCR) and observed a higher activity as well as better hydrothermal stability than Cu-SSZ-13 by conventional synthesis. In situ infrared and ultraviolet-visible spectroscopy investigations revealed that the superior NH3-SCR performance of waste liquid-derived Cu-SSZ-13 results from a higher density of Cu2+ sites coordinated to paired Al centers on the zeolite framework. The technoeconomic analysis highlights that recycling OSDA-containing waste liquids could reduce the raw material cost of SSZ-13 synthesis by 49.4% (mainly because of the higher utilization efficiency of TMAdaOH) and, meanwhile, the discharging of wastewater by 45.7%. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48449]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Chinese Academy of Sciences 2.South China University of Technology 3.Research Center for Eco-Environmental Sciences (RCEES) |
| 推荐引用方式 GB/T 7714 | Xiong, Wuwan,Liu, Linhui,Guo, Anqi,et al. Economical and Sustainable Synthesis of Small-Pore Chabazite Catalysts for NOx Abatement by Recycling Organic Structure- Directing Agents[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023:1-11. |
| APA | Xiong, Wuwan.,Liu, Linhui.,Guo, Anqi.,Chen, Dongdong.,Shan, Yulong.,...&Chen, Peirong.(2023).Economical and Sustainable Synthesis of Small-Pore Chabazite Catalysts for NOx Abatement by Recycling Organic Structure- Directing Agents.ENVIRONMENTAL SCIENCE & TECHNOLOGY,1-11. |
| MLA | Xiong, Wuwan,et al."Economical and Sustainable Synthesis of Small-Pore Chabazite Catalysts for NOx Abatement by Recycling Organic Structure- Directing Agents".ENVIRONMENTAL SCIENCE & TECHNOLOGY (2023):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。