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论文类型：期刊论文

发表时间：2011-07-01

发表刊物：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录刊物：SCIE、EI

卷号：36

期号：15

页面范围：8978-8984

ISSN号：0360-3199

关键字：Methane decomposition; Hydrogen; Activated carbon; Coal liquefaction residue; KOH activation

摘要：Activated carbons (ACs) are of good potential to be the catalysts for methane decomposition to produce hydrogen without CO and CO2. Coal liquefaction residue (CLR) seems to be a promising precursor for ACs. In this work, several types of ACs were prepared by KOH activation from Shenhua CLR with addition of SiO2 or SBA-15. The catalytic activity and stability for methane decomposition were investigated and compared with commercial coal-based AC and carbon black (BP2000). The results show that the prepared ACs have larger surface area, narrower pore distribution, and higher catalytic activity than those directly prepared by KOH activation, and are superior to the commercial carbons. The increased microporosity resulting from the soluble salts formed by the reaction between the additive and KOH is responsible for the high catalytic activity. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.