Lee, EK Lee, SY Han, GY Lee, BK Lee, TJ Jun, JH Yoon, KJ 2024-01-21T06:39:30Z 2024-01-21T06:39:30Z 2021-09-02 2004-08 0008-6223 https://pubs.kist.re.kr/handle/201004/137384 Catalytic characteristics of carbon blacks for methane decomposition were investigated. The reaction was carried out under atmospheric pressure at 1023-1323 K. Carbon blacks exhibited stable catalytic activity despite of carbon deposition. No trend could be induced between the activity and the surface area of fresh samples. The reaction order was near unity and the activation energies over carbon blacks were significantly lower than those over activated carbons. It was observed that the deposited carbon formed many protrusions on the particles and made the particles bigger and stuck together. In spite of marked changes of the carbon morphology during the reaction, it is noteworthy that the activity of carbon blacks was maintained nearly constant. The nature of active sites was discussed. (C) 2004 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD ACTIVATED CARBONS FOSSIL-FUELS NATURAL-GAS DEACTIVATION CRACKING CO2 Catalytic decomposition of methane over carbon blacks for CO2-free hydrogen production Article 10.1016/j.carbon.2004.06.003 1 CARBON, v.42, no.12-13, pp.2641 - 2648 CARBON 42 12-13 2641 2648 scie scopus 000223753200035 2-s2.0-4043068506 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article ACTIVATED CARBONS FOSSIL-FUELS NATURAL-GAS DEACTIVATION CRACKING CO2 carbon black catalyst pyrolysis scanning electron microscopy reaction kinetics