La2CuO4/ZSM-5 sorbents for high-temperature desulphurization. (1st August 2016)

• Record Type: Journal Article
• Authors: Liu, Dongjing; Zhou, Weiguo; Wu, Jiang
• Is Part Of: Fuel. Volume 177(2016)
• Page Start: 251
• Page End: 259
• Publication Date: 2016-08-01
• Subjects: Desulphurization -- Sorbent -- Lanthana -- La2CuO4 -- ZSM-5; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2016.02.093
• Languages: English
• ISSNs: 0016-2361

Abstract

Graphical abstract: Highlights: The sulfidation activity of La2 O3 was remarkably enhanced by introduction of Cu. 5La5Cu/ZSM-5 sorbent had the highest sulfur capacity of 2240.5 μmol S/g. H2 suppressed sulfur removal but CO had a little influence on sulfidation reaction. Abstract: The high-temperature H2 S removal was conducted over x La y Cu/ZSM-5 sorbents prepared via citric acid method. The sorbents showed good desulphurization performance, the maximal sulfur capacity of 2240.5 μmol S/g over 5La5Cu/ZSM-5 was achieved at 700 °C. The presence of H2 obviously shortened the breakthrough time and reduced the sulfur capacity. However, the presence of CO had little influence on the desulphurization behavior. The sulfidation activity of La2 O3 can be significantly enhanced by introduction of Cu due to the intimate mixing of La2 O3 and CuO, the formation of La2 CuO4 compound.