Indonesian Journal of Chemistry
Vol 20, No 1 (2020)

Hydrogen Adsorption Characteristics for Zeolite-Y Templated Carbon

Rika Wijiyanti (Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember)
Triyanda Gunawan (Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember)
Noor Shawal Nasri (Sustainable Waste-to-Wealth Program, Resource Sustainability Research Alliance, UTM-MPRC Institute for Oil & Gas, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Malaysia)
Zulhairun Abdul Karim (Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Ta’zim, Malaysia
Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia)

Ahmad Fauzi Ismail (Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Ta’zim, Malaysia
Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia)

Nurul Widiastuti (Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember)



Article Info

Publish Date
31 Dec 2019

Abstract

The hydrogen adsorption, kinetic and thermodynamic of adsorption onto the zeolite templated carbon (ZTC) were examined at the temperature range of 30-50 °C and ambient pressure. The ZTC was prepared from zeolite-Y template and sucrose carbon precursor by impregnation method and showed its specific surface area of 932 m2/g as well as 0.97 cm3/g for total pore volume. Analysis of physical and chemical characteristics for materials were performed using XRD, SEM, TEM and N2 isotherm. The results indicated that the ZTC has some ordered network structure of carbon and also exhibits the formation of carbon layer outside the zeolite micropore. We observed the ZTC for hydrogen adsorption both gravimetric and volumetric method up to 1.72 and 1.16 wt.% at the lowest temperature, respectively. The kinetic process at all studied temperature was best approximated by pseudo second order kinetic model. The aspects of thermodynamic such as heat of adsorption and the entropy change were -14.41 kJ/mol and -40.93 J/K mol, respectively. Both values was negative, indicating an exothermic reaction and low disorder at the hydrogen and ZTC interface, when the adsorption process took place. While, the enthalpy change value exhibits characteristic of physical process. The Gibbs energy change calculated at 30, 40 and 50 °C were -1.99, -1.59 and -1.19 kJ/mol, respectively, indicating a spontaneous adsorption process.

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Journal Info

Abbrev

ijc

Publisher

Subject

Chemical Engineering, Chemistry & Bioengineering Chemistry

Description

Indonesian Journal of Chemistry is an International, peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry including applied chemistry. The journal is accredited by The Ministry of Research, Technology ...