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Hydrogen storage investigation of fixed bed of nano-crystalline Mg-Ni-Cr mixed oxides

Abdus Salam, M and Sufian, Suriati and Ku Shaari, Ku Zilati (2013) Hydrogen storage investigation of fixed bed of nano-crystalline Mg-Ni-Cr mixed oxides. [Citation Index Journal]

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Abstract

Nano-crystalline mixed oxides containing magnesium, nickel and chromium (MNCM) have been synthesized as an adsorbent using coprecipitation method and showed its reversible hydrogen storage capacity at ambient conditions using fixed bed. XRD and ICP-MS analyses ensured the adsorbent’s phase and homogeneity. The microstructure of mixed oxide has been investigated using FESEM and BET and TEM technique respectively. The adsorbent consisted of mesoporous surface with a surface area of 254-370 m2gm-1 and SAED pattern showed that the adsorbents are poly-crystalline. The mixed oxides exhibited a 3.2 wt% H2 storage capacity and release 57% of adsorbed H2. Adsorption enthalpy (ΔH) and entropy (ΔS) change of -27.58 kJ/mol and -70.21 J/mol.K are indicating favorable thermodynamics for reversible hydrogen storage material.

Item Type:Citation Index Journal
Subjects:Q Science > QD Chemistry
Academic Subject One:Academic Department - Chemical Engineering - Separation Process
Academic Subject Three:petroleum engineering
Departments / MOR / COE:Departments > Chemical Engineering
ID Code:10222
Deposited By: Dr Suriati Sufian
Deposited On:25 Oct 2013 01:56
Last Modified:20 Mar 2017 01:59

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