通过在绿色石油焦中添加多种功能性喹啉调节剂改善碳块的自烧结机械性能

IF 7.2 2区 工程技术 Q1 CHEMISTRY, APPLIED
Jiao Tan , Pei Gong , Xueli Wu , Ping Liu , Gaimei Ren , Yongle Qu , Run Li , Chuanjun Tu
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引用次数: 0

摘要

由于生产周期相对较短,绿色石油焦(GPC)的自烧结是合成高强度石墨块的重要方法。然而,GPC 中小分子成分的挥发不可避免地会导致孔隙和微裂纹的产生,从而严重降低碳块的机械性能。在此,我们报告了一种以 GPC 为起始材料制备高机械强度碳块的简便喹啉辅助成分调节方法。喹啉具有三大功能。首先,通过喹啉萃取可以有效去除不理想的有机挥发物,从而抑制孔隙和微裂纹的产生。其次,由于喹啉容易形成自由基,它的存在可以促进芳基化合物的聚合。第三,芳香环的极化增强了石墨层之间的相互作用,从而明显改善了碳块的机械性能。因此,获得的碳块 GPC/QI-17-C 表观密度为 1.56 g-cm-3,抗弯强度为 39.61 MPa,抗压强度为 136.98 MPa,分别是原始 GPC 对应材料的 1.16、3.39 和 4.53 倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Improved self-sintering mechanical performance of carbon blocks via the addition of multiple functional quinoline regulator in green petroleum coke

Improved self-sintering mechanical performance of carbon blocks via the addition of multiple functional quinoline regulator in green petroleum coke

The self-sintering of green petroleum coke (GPC) is an important method for the synthesis of high-strength graphite blocks owing to its relatively short production cycle. However, the volatilization of small molecular components in GPC inevitably results in the generation of pores and microcracks which seriously deteriorates the mechanical performance of carbon blocks. Herein, we report a facile quinoline-assisted composition regulation approach to prepare high mechanical strength carbon blocks using GPC as the starting material. Quinoline exhibits three major functions. Firstly, unideal organic volatiles can be effectively removed via quinoline extraction, thereby inhibiting the generation of pores and microcracks. Secondly, the presence of quinoline can promote the polymerization of aryl compounds due to its easy formation of free radicals. Thirdly, the interactions between the graphite layers are enhanced by the polarization of the aromatic rings, which clearly improves the mechanical performance of the carbon blocks. As a result, the obtained carbon block GPC/QI-17-C demonstrates an apparent density of 1.56 g·cm−3, flexural strength of 39.61 MPa and compressive strength of 136.98 MPa, which are 1.16, 3.39 and 4.53 times that of pristine GPC counterparts, respectively.

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来源期刊
Fuel Processing Technology
Fuel Processing Technology 工程技术-工程:化工
CiteScore
13.20
自引率
9.30%
发文量
398
审稿时长
26 days
期刊介绍: Fuel Processing Technology (FPT) deals with the scientific and technological aspects of converting fossil and renewable resources to clean fuels, value-added chemicals, fuel-related advanced carbon materials and by-products. In addition to the traditional non-nuclear fossil fuels, biomass and wastes, papers on the integration of renewables such as solar and wind energy and energy storage into the fuel processing processes, as well as papers on the production and conversion of non-carbon-containing fuels such as hydrogen and ammonia, are also welcome. While chemical conversion is emphasized, papers on advanced physical conversion processes are also considered for publication in FPT. Papers on the fundamental aspects of fuel structure and properties will also be considered.
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