Title

Thermal Decomposition Of (Nh4)2So4 In Presence Of Mn3O4

Keywords

(NH ) SO 4 2 4; Hybrid cycle; Mn O 3 4; Thermal decomposition; Water-splitting cycle

Abstract

The main objective of this work is to develop a hybrid water-splitting cycle that employs the photon component of sunlight for production of H 2 and its thermal (i.e. IR) component for generating oxygen. In this paper, (NH4)2SO4 thermal decomposition in the presence of Mn3O4, as an oxygen evolving step, was systematically investigated using thermogravimetric/differential thermal analyses (TG/DTA), temperature programmed desorption (TPD) coupled with a mass spectrometer (MS), X-ray Diffraction (XRD), and X-ray Photoelectron Spectroscopy (XPS) techniques. Furthermore, thermolysis of ammonium sulfate, (NH 4)2SO4, in the presence of Mn3O 4 was also investigated by conducting flow reactor experiments. The experimental results obtained indicate that at 200-450 °C, (NH 4)2SO4 decomposes forming NH3 and H2O and sulfur trioxide that in the presence of manganese oxide react to form manganese sulfate, MnSO4. At still higher temperatures (800∼900 °C), MnSO4 further decomposed forming SO2 and O2. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights.

Publication Date

5-1-2011

Publication Title

International Journal of Hydrogen Energy

Volume

36

Issue

10

Number of Pages

5822-5827

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.ijhydene.2010.11.011

Socpus ID

79955478381 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79955478381

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