摘要
由于我国重油加工能力的不断提高,石油焦的产量不断增加,但石油焦的利用途径有限,开发石油焦的增值利用技术势在必行。本文以石油焦为前驱体,以氢氧化钾为活化剂,制备了一系列多孔碳材料。分别考察了活化剂用量对样品比表面积、孔结构和电容性能的影响,研究发现随着活化剂用量增加,微孔含量先增加后减小,而介孔含量单调增加,所制备产品比表面积最高可达2259 m^2·g^(-1)。当碱焦比为4时,所制备的样品具有最高的比电容值,并且具有优异的倍率特性。
The output of petroleum coke increases gradually with the rise of heavy oil processed.However,there are very limited ways to utilize petroleum coke.So it is very urgently to develop value-added technologies to utilize petroleum coke.In this work,a series of porous carbons were prepared using petroleum coke and KOH as carbon precursor and activating agent,respectively.The effect of KOH dosage on the specific surface area,pore structure and capacitive performance of the carbons was intensively investigated.The results show that,with the rise of KOH dosage,micropores increases firstly,then decreases.In contrast,mesopores increases monotonously.The specific surface area of the carbon can reach up to 2259 m^2·g^（-1）.When the mass ratio of KOH/coke is 4,the prepared carbon possesses the highest specific capacitance and also have excellent rate performance.
出处
《山东化工》
CAS
2017年第19期21-23,共3页
Shandong Chemical Industry
基金
国家自然科学基金面上项目(21476264)
关键词
石油焦
多孔碳
比电容
比表面积
petroleum coke
porous carbon
specific capacitance
specific surface area
