Synthesis of highly ordered nanorod arrays 9Mn1CeMOs and character of high sulfur capacity for hot coal gas desulfurization. Issue 4 (17th January 2014)

• Record Type: Journal Article
• Authors: Liu, B.S.; Guo, Y.H.; Zhang, Q.L.; Zhang, F.M.; Zhao, X.H.
• Is Part Of: Environmental progress & sustainable energy. Volume 33:Issue 4(2014:Dec.)
• Page Start: 1266
• Page End: 1273
• Publication Date: 2014-01-17
• Subjects: Environmental engineering -- Periodicals; Sustainable engineering -- Periodicals; Environmental chemistry -- Periodicals; 333.7
• DOI: 10.1002/ep.11932
• Languages: English
• ISSNs: 1944-7442

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Highly ordered nanorod arrays 9Mn1Ce metal oxides (MOs) were prepared by negative replication of SBA‐15 hard template and were used directly for hot coal gas desulfurization at 600°C. The results indicated that 9Mn1CeMOs sorbent presented a superior desulfurization activity and small resistance of H₂S diffusion compared with 9Mn1Ce mixed oxides. The breakthrough sulfur capacity (19.03 g‐S/100 sorbent) was significantly higher than that (7.94 g‐S/100 sorbent) over La_xFe_yO_z/MCM‐41 due to highly ordered nano‐rod array structure. The five successive sulfidation/regeneration cycles verified that 9Mn1CeMOs exhibited highly durable regeneration ability. The morphology and structure of the 9Mn1CeMOs were characterized by scanning electron microscopy, high‐resolution transmission electron microscope, X‐ray diffraction, and N₂ adsorption, it revealed that parallel nanorod arrays formed with a diameter of 6–7 nm and the nanobridges between the nanorods played a crucial role for the stability of 9Mn1CeMOs. © 2014 American Institute of Chemical Engineers Environ Prog, 33: 1266–1273, 2014</p> </abstract>