Adsorption Science and Technology, ( ISI ), Volume (31), No (8), Year (2013-8) , Pages (729-746)

Title : ( Comparing the Performance of KOH with NaOH Activated Anthracites in terms of Methane Storage )

Authors: Ali Ahmadpour , Hamed Rashidi , Mohammad Jaber Darabi Mahboub , Mahsa Razavi Farmad ,
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Anthracite activated carbons are proper adsorbents for methane storage. In this study, Iranian local anthracite was activated using two commonly used chemicals (sodium hydroxide and potassium hydroxide) at similar conditions and their products are compared with regard to various properties in order to find the optimal operating parameters such as temperature, chemical ratio and pyrolysis time for producing ACs with high surface area. Three activation temperatures (670, 730 and 790 °C), three chemical-to-coal ratios (2, 2.5 and 3) and two pyrolysis times (1 and 2 hours) were studied in each carbon series (NaOH and KOH). Accordingly, the pore structures of Activated carbon (ACs) were investigated accurately based on adsorption isotherms of nitrogen as well as density functional theory. In addition, their methane storage capacities were also measured and discussed. Specific volumes (microporosity and mesoporosity) of products were also calculated. The KOH ACs had higher micropore volumes, whereas NaOH ACs had relatively higher densities. The highest methane storage was obtained by a KOH AC sample with 3:1 chemical-to-coal ratio (R), activated at 730 °C for 1 hour (AK37301). The stored and delivered methane for this sample were 176 and 158 vol/vol, respectively.

Keywords

, Activated carbon, KOH, NaOH, Methane
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@article{paperid:1038905,
author = {Ahmadpour, Ali and Rashidi, Hamed and Darabi Mahboub, Mohammad Jaber and Mahsa Razavi Farmad},
title = {Comparing the Performance of KOH with NaOH Activated Anthracites in terms of Methane Storage},
journal = {Adsorption Science and Technology},
year = {2013},
volume = {31},
number = {8},
month = {August},
issn = {0263-6174},
pages = {729--746},
numpages = {17},
keywords = {Activated carbon; KOH; NaOH; Methane storage.},
}

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%0 Journal Article
%T Comparing the Performance of KOH with NaOH Activated Anthracites in terms of Methane Storage
%A Ahmadpour, Ali
%A Rashidi, Hamed
%A Darabi Mahboub, Mohammad Jaber
%A Mahsa Razavi Farmad
%J Adsorption Science and Technology
%@ 0263-6174
%D 2013

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