Regenerable mixed metal oxide sorbents for coal gas desulfurization at moderate temperatures

Scavenging H2S(g) from oil phases by means of ultradispersed sorbents

“…Oxides of iron, manganese, zinc, magnesium and copper are considered suitable sorbents for gas desulfurization at temperatures in excess of 300°C [7,8]. Iron (III) oxide displayed higher sulfur uptake/ g of sorbent than calcium and zinc oxides over a temperature range between 600 and 800°C [9].…”

Performance of ZnMn2O4/SiO2 sorbent for high temperature H2S removal from hot coal gas

“…To understand the contents of Zn and Mn, the fresh and used samples were analyzed with ICP to determine the contents of Zn and Mn. 26 Recent studies have revealed that desulfurization system components become prohibitively expensive as the operating temperature increases and the optimum desulfurization temperature is controlled between 350-600 C. 27,28 Over such a range of temperatures, the efficiency of the process and its technical viability reduce the overall cost of the process.…”

Non-isothermal decomposition kinetics of FeC2O4·2H2O prepared by solid-state method aiming at the formation of Fe2O3

“…These species must be removed from the syngas prior to its utilization because of their negative effects on chemical processing and environment. Fe 2 O 3 is known to be used as a high efficient desulfurizer in the medium-high temperature aiming at the coal-derived fuel gas and chemically synthesized gas cleanup [2,3]. The iron oxides used as desulfurizer should always largely maintain the properties such as nanoscale, high dispersion and prodigious specific surface area, which greatly depend on the physical microstructure that largely influences the sulfur capacity of the desulfurizer.…”