H2S removal and regeneration properties of Zn–Al-based sorbents promoted with various promoters

A Study on the Regenerable Co and Ni-Based Sorbents to Remove Hydrogen Sulfide at Middle Temperature

“…As shown in Fig. 8 were well known as an oxidation catalyst in the catalytic oxidation of SO 2 , CO and NH 3 [15,18]. It could be suggested that the metal aluminates played an important catalytic role in transforming S in cobalt sulfide and nickel sulfide into SO 2 .…”

“…To improve regeneration abilities of metal oxide sorbents, new sorbents named CA50 and NA50 were prepared by the co-precipitation method with cobalt or nickel and aluminium [14,15]. Figure 6 shows that sulfur removal abilities of the CA50 and NA50 sorbents under our experimental gas compositions at 350°C during multiple cycles.…”

A study of Zn–Mn based sorbent for the high-temperature removal of H2S from coal-derived gas

“…Zinc oxides are known as one of the metal oxides that have the favorable thermodynamic for H 2 S removal and continuously to be major sorbents. It is still a hot metal oxide for the removal of H 2 S and is modified by adding Ti or other metals in order to improve its disadvantages [10][11][12]. Unfortunately, despite its attractive thermodynamic property, the reduction of ZnO and subsequent vaporization of elemental zinc present a serious problem when the temperature is up to 823 K [13][14][15].…”

Sulfidation/regeneration multicycle testing of nickel-modified ZnFe2O4 desulphurization sorbent

“…Zhang et al [1] has explored the zinc ferrite sorbent prepared by the sol-gel auto-combustion method, which indicates that the desulphurization performance is improved at middle temperature. In addition, it is found that the nickel addition to zinc ferrite could improve the reactivity at lower temperature and reduce the regeneration temperature [5]. Therefore, it is necessary to understand the behavior of the nickel-modified ZnFe 2 O 4 during sulfidation/regeneration multicycles.…”