文献类型：期刊文献

英文题名：Kinetics insights into size effects of carbon nanotubes' growth and their supported platinum catalysts for 4,6-dinitroresorcinol hydrogenation

作者：Zhang, Yan[1];Zhang, Xiangxue[1];Sang, Keng[1];Chen, Wenyao[1];Qian, Gang[1];Zhang, Jing[1];Duan, Xuezhi[1];Zhou, Xinggui[1];Yuan, Weikang[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：72

起止页码：133

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20243116772871);WOS:【SCI-EXPANDED(收录号:WOS:001283593700001)】；

基金：This work was financially supported by the National Key Research and Development Program of China (2022YFA1503504), the National Natural Science Foundation of China (22038003, 22178100, 22178101, and U22B20141), the Shanghai Pilot Program for Basic Research (22TQ1400100-15), the Innovation Program of Shanghai Municipal Education Commission, the Program of Shanghai Academic/Technology Research Leader (21XD1421000), the Shanghai Science and Technology Innovation Action Plan (22JC1403800).

语种：英文

外文关键词：Kinetics; Size effects; Catalytic hydrogenation; Active site

摘要：Size effects are a well-documented phenomenon in heterogeneous catalysis, typically attributed to alterations in geometric and electronic properties. In this study, we investigate the influence of catalyst size in the preparation of carbon nanotube (CNT) and the hydrogenation of 4,6-dinitroresorcinol (DNR) using Fe2O3 and Pt catalysts, respectively. Various Fe2O3/Al2O3 catalysts were synthesized for CNT growth through catalytic chemical vapor deposition. Our findings reveal a significant influence of Fe2O3 nanoparticle size on the structure and yield of CNT. Specifically, CNT produced with Fe2O3/Al2O3 containing 28% (mass) Fe loading exhibits abundant surface defects, an increased area for metal-particle immobilization, and a high carbon yield. This makes it a promising candidate for DNR hydrogenation. Utilizing this catalyst support, we further investigate the size effects of Pt nanoparticles on DNR hydrogenation. Larger Pt catalysts demonstrate a preference for 4,6-diaminoresorcinol generation at (1 0 0) sites, whereas smaller Pt catalysts are more susceptible to electronic properties. The kinetics insights obtained from this study have the potential to pave the way for the development of more efficient catalysts for both CNT synthesis and DNR hydrogenation. (c) 2024 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.