Desulfurization/regeneration tests of V/sub 2/O/sub 5/ supported on alumina prepared at Giner, Inc., Harshaw Vanadia catalyst obtained from METC and unsupported high purity V/sub 2/O/sub 5/ (Union Carbide) were carried out in a new quartz lined reactor. The results obtained are similar to those obtained in the previously used stainless steel reactor. Figure 1 and 2 confirm that V/sub 2/O/sub 3/ has an affinity to react with H/sub 2/S. The vanadia catalyst obtained from METC showed lower sulfur capacity than the one obtained directly. It is seen that change in desulfurization temperature has little effect on sulfur capacity (Figure 1), but the change in water concentration of inlet gas mixture has a large effect on sulfur capacity (Figure 2). Both of these results are in agreement with our earlier experiments. Surface analyses of mixed oxide CuO/ZnO, CuO/zeolite and CuO/Al/sub 2/O/sub 3/ sorbents were carried out by Scanning Eletron Microscopy (SEM). Procurement of quartz reactor, furnace and other accessories and construction of fluidized bed reactor systems have progressed well.