| Title: | Elucidating the role of confinement and shielding effect over zeolite enveloped Ru catalysts for propane low temperature degradation |
| Author(s): | Tao J; Zhang Q; Zhao Y; Chen H; Liu W; He Y; Yin Y; He T; Chen J; Wang X; Wu D; Peng H; |
| Address: | "Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi, 330031, China. Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi, 330031, China. Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, 321004, China. Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi, 330031, China; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi, 330031, China. Electronic address: penghonggen@ncu.edu.cn" |
| DOI: | 10.1016/j.chemosphere.2022.134884 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) are the main precursor for ozone formation and hazardous to human health. Light alkane as one of the typical VOCs is difficult to degrade to CO(2) and H(2)O by catalytic degradation method due to its strong C-H bond. Herein, a series of ultrafine Ru nanoclusters (<0.95 nm) enveloped in silicalite-1 (S-1) zeolite catalysts were designed and prepared by a simple one-pot method and applied for catalytic degradation of propane. The results demonstrate that the enveloped Ru(1)@S-1 catalyst has excellent propane degradation performance. Its T(95) is as low as 294 degrees C with moisture, and the turnover frequency (TOF) value is up to 5.07 x 10(-3) s(-1), evidently higher than that of the comparison supported catalyst (Ru(1)/S-1). Importantly, Ru(1)@S-1 exhibits superior thermal stability, water resistance and recyclability, which should be attributed to the confinement and shielding effect of the S-1 shell. The in-situ DRIFTS result reveals that the propane degradation over Ru(1)@S-1 follows the Mars-van-Krevelen (MvK) mechanism, where the hydroxy from the framework of zeolite can provide the active oxygen species. Our work provides a new candidate and guideline for an efficient and stable catalyst for the low-temperature degradation of the light alkane VOCs" |
| Keywords: | Alkanes Catalysis Humans Propane Temperature *Volatile Organic Compounds/chemistry *Zeolites/chemistry Propane degradation Sinter and water resistance Ultrafine Ru nanoclusters Volatile organic compounds Zeolite enveloped catalysts; |
| Notes: | "MedlineTao, Jinxiong Zhang, Qiuli Zhao, Yonghua Chen, Hunan Liu, Wenming He, Yuzhao Yin, Yuni He, Tianyao Chen, Jian Wang, Xufang Wu, Daishe Peng, Honggen eng England 2022/05/14 Chemosphere. 2022 Sep; 302:134884. doi: 10.1016/j.chemosphere.2022.134884. Epub 2022 May 9" |
