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同位素标记法用于若干多相催化剂表面化学的研究
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作者 何鸣元 《石油学报(石油加工)》 EI CAS 1985年第3期71-81,共11页
以氘为标记原子研究多相催化剂表面活性中心结构及反应中间物结构。用交叉标记法考察络合物载持后可能形成的各种表面结构。用标记化合物作化学探针判断表面活性中心结构。将标记技术分别与红外光谱和程序升温反应相结合,以确定吸附于... 以氘为标记原子研究多相催化剂表面活性中心结构及反应中间物结构。用交叉标记法考察络合物载持后可能形成的各种表面结构。用标记化合物作化学探针判断表面活性中心结构。将标记技术分别与红外光谱和程序升温反应相结合,以确定吸附于催化剂表面的反应中间物结构。所研究的体系为氧化铝载持的锕系元素金属络合物以及氧化锆上一氧化碳和二氧化碳的加氢反应。 展开更多
关键词 催化剂 红外光谱 中间物 IR 光谱 氧化铝载体 加氢反应 程序升温反应 表面化学过程 多相催化反应 金属络合物 同位素标记 多相
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Characterization of carbon fibers recovered through mechanochemical-enhanced recycling of waste carbon fiber reinforced plastics 被引量:3
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作者 NZIOKA Antony Mutua ALUNDA Bernard Ouma +4 位作者 YAN Cao-zheng SIM Ye-Jin KIM Myung-Gyun YOON Bok-Young KIM Young-Ju 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第10期2688-2703,共16页
In this study,we present the characterization of the carbon fibers recovered from the mechanochemical-enhanced recycling of carbon fiber reinforced fibers.The objectives of the study were to investigate the effect of ... In this study,we present the characterization of the carbon fibers recovered from the mechanochemical-enhanced recycling of carbon fiber reinforced fibers.The objectives of the study were to investigate the effect of our modified recycling method on the interfacial properties of recovered fibers.The reinforced plastics were recycled;the recycling efficiency was determined and the recovered fibers were sized using 1 wt%and 3 wt%concentration of(3-aminopropyl)triethoxysilane.We characterized the morphologies utilizing the electron spectroscopy for chemical analysis(ESCA),atomic force microscopy(AFM),FTIR-attenuated total reflection(ATR)spectroscopy and scanning electron microscopy(SEM).Although the surface of the fibers had no cracks,there was evidence of contaminations which affected the interfacial properties and the quality of the fibers.Results showed that the trends in the recovered and virgin fibers were similar with an increase in sizing concentration.The results highlighted the perspectives of increasing the quality of recovered fibers after the recycling process. 展开更多
关键词 recycled carbon fibers fiber reinforced plastics mechanochemical process interfacial property surface morphology
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