Application of supported Cu–Ru catalysts for the removal of trace olefins in aromatics

IF 1.1 4区地球科学 Q4 CHEMISTRY, PHYSICAL

Clay Minerals Pub Date : 2022-06-01 DOI:10.1180/clm.2022.23

Xiao Liang, Naiwang Liu, Li Shi, Xuan Meng

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Abstract

Abstract Exploring reliable hydrogenation catalysts to remove trace olefins in aromatic hydrocarbons through hydrogenation is an important topic. In this paper, a bimetallic Cu–Ru/montmorillonite (Cu–Ru/M) catalyst was prepared using a step-by-step impregnation method, and the effects of bimetallic catalysts on removing olefins were assessed. The catalysts were characterized using X-ray diffraction, Brunauer–Emmett–Teller specific surface area, inductively coupled plasma atomic emission spectrometry, high-resolution transmission electron microscopy and temperature-programmed reduction of H2. The results show that there is a strong interaction between Cu and Ru on the Cu–Ru/M catalyst, which improves the dispersion of the metals on the surface of the support M. The hydrogen spillover phenomenon of Cu–Ru/M enhances its activity and adsorption capacity for hydrogen species. The catalytic performance test confirmed that the bimetallic catalyst has significantly greater activity and stability. The optimal loadings are 5% copper and 1% ruthenium, and the performance of this catalyst is comparable to those of noble-metal Pt/M catalysts.

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负载型Cu-Ru催化剂在芳烃中痕量烯烃脱除中的应用

摘要探索可靠的加氢催化剂，通过加氢去除芳烃中的微量烯烃是一个重要的课题。本文采用分步浸渍法制备了双金属Cu–Ru/蒙脱土（Cu–Ru/M）催化剂，并评价了双金属催化剂对脱烯烃的影响。使用X射线衍射、Brunauer–Emmett–Teller比表面积、电感耦合等离子体原子发射光谱法、高分辨率透射电子显微镜和H2程序升温还原对催化剂进行了表征。结果表明，Cu–Ru/M催化剂上Cu和Ru之间存在较强的相互作用，改善了金属在载体M表面的分散性。Cu–Ru-M的氢溢出现象增强了其对氢物种的活性和吸附能力。催化性能测试证实，双金属催化剂具有显著更高的活性和稳定性。最佳负载量为5%的铜和1%的钌，该催化剂的性能与贵金属Pt/M催化剂的性能相当。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clay Minerals 地学-矿物学

CiteScore

3.00

自引率

20.00%

发文量

审稿时长

6 months

期刊介绍： Clay Minerals is an international journal of mineral sciences, published four times a year, including research papers about clays, clay minerals and related materials, natural or synthetic. The journal includes papers on Earth processes soil science, geology/mineralogy, chemistry/material science, colloid/surface science, applied science and technology and health/ environment topics. The journal has an international editorial board with members from fifteen countries.