Reactive adsorption of hydrogen sulphide (H2S) from gaseous streams with mixed oxides (ZnO-CuO) supported onto alumina at room temperature is dealt in this manuscript. Sorbents with a fixed total metal content and variable Zn:Cu ratios were prepared by impregnation of a commercial alumina in order to investigate the origin of possible synergic effect of the two metal oxides. H2S (500-3000 ppmv in N2) removal tests were run under dynamic conditions at 30 °C. Experimental techniques such as BET and pore size distribution by N2-adsorption, SEM-EDX, XRD and DRIFT analysis were coupled for the characterization of fresh and spent sorbents. TPD/TPO experiments on saturated sorbents allowed the speciation of adsorbed sulphur species, testifying the complexity of the surface reactions
HIGHLIGHTING THE EFFECT OF THE SUPPORT DURING THE H2S ADSORPTION AT LOW TEMPERATURE OVER COMPOSITE Zn-Cu SORBENTS
L Lisi;S Cimino
2017
Abstract
Reactive adsorption of hydrogen sulphide (H2S) from gaseous streams with mixed oxides (ZnO-CuO) supported onto alumina at room temperature is dealt in this manuscript. Sorbents with a fixed total metal content and variable Zn:Cu ratios were prepared by impregnation of a commercial alumina in order to investigate the origin of possible synergic effect of the two metal oxides. H2S (500-3000 ppmv in N2) removal tests were run under dynamic conditions at 30 °C. Experimental techniques such as BET and pore size distribution by N2-adsorption, SEM-EDX, XRD and DRIFT analysis were coupled for the characterization of fresh and spent sorbents. TPD/TPO experiments on saturated sorbents allowed the speciation of adsorbed sulphur species, testifying the complexity of the surface reactionsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
