Kinetic study of high-temperature removal of H_2S by novel metal oxide sorbents

摘要

The behavior of different mixed oxides, including zinc titanates (ZT) and zinc ferrites modified with CuO (ZFC) or TiO_2 (ZFT), as hot gas desulfurizing sorbents was investigated. The sorbents were prepared by calcination at 650 deg C of a mixture of bulk oxides in three different stoichiometries in order to form mew phases and modify their textural properties. Tests of stability against reduction were obtained by thermoprogrammed rexduction, and kinetic studies of the sulfidation reaction were carried out in a thermobalance in the temperature range of 550-650 deg C.