石油沥青的表面氧化以提高活性炭的中孔率和比表面积。

Surface oxidation of petroleum pitch to improve mesopore ratio and specific surface area of activated carbon.

作者信息

Lee Song Mi, Lee Seon Ho, Jung Doo-Hwan

机构信息

Fuel Cell Laboratory, Korea Institute of Energy Research (KIER), Daejeon, 34129, Republic of Korea.

Advanced Energy and System Engineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.

出版信息

Sci Rep. 2021 Jan 14;11(1):1460. doi: 10.1038/s41598-020-80784-2.

DOI:10.1038/s41598-020-80784-2

PMID:33446843

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7809199/

Abstract

In this study, surface oxidation of petroleum pitch was performed to enhance the thermal stability, specific surface area, and mesopore ratio of activated carbon. The oxygen uptake of the pitch by surface oxidation has a strong influence on the formation of the specific surface area and pore size of activated carbon. It was confirmed that the oxygen uptake from the surface to the inner side of the surface oxidized pitch was the highest at the temperature of 330 °C (IP330-AC), with a mesopore ratio of 63.35% and specific surface area of 1811 m g. The oxygen content of the surface oxidized pitch increased proportionately with the mesopore ratio in activated carbon. The specific surface area and mesopore ratio of IP330-AC were respectively 163% and 487% higher than those of petroleum-based commercial activated carbon (A-BAC), and 102% and 491% higher than those of coconut-based commercial activated carbon (P60).

摘要

在本研究中，对石油沥青进行了表面氧化处理，以提高活性炭的热稳定性、比表面积和中孔率。通过表面氧化，沥青的吸氧对活性炭比表面积和孔径的形成有很大影响。结果证实，在330℃（IP330-AC）温度下，表面氧化沥青从表面到内侧的吸氧率最高，中孔率为63.35%，比表面积为1811 m²/g。表面氧化沥青的氧含量与活性炭中的中孔率成比例增加。IP330-AC的比表面积和中孔率分别比石油基商业活性炭（A-BAC）高163%和487%，比椰子基商业活性炭（P60）高102%和491%。