摘 要 對於二氧化硫氫化反應，我們的目的是找出高活性及高選擇性的觸媒，研究的方向是使用各種鐵觸媒負載在r-Al2O3和 SiO2 等多孔性載體上。 使用的觸媒包括：(1)以硫酸鐵系化合物用含浸法製備Fe/ r-Al2O3 觸媒，(2)以硝酸鐵系化合物用含浸法製備Fe/ r-Al2O3 觸媒，(3)以硝酸鐵系、硝酸鉻系、及釸酸鈉用沉澱法製備Fe-Cr-Si觸媒。反應的測試是在不同的溫度下測量觸媒在各種不同的原子比下的反應活性。 對第(1)種觸媒而言：在各種不同的原子比例下測得最佳的催化性能(100%的二氧化硫轉化率及100%硫化氫選擇率)為200% Fe/ r-Al2O3 。對第(2)種觸媒而言： 最佳的催化性能為300% Fe/ r-Al2O3 比例的觸媒 。對第(3)種觸媒而言：最佳的催化性能為Fe-Cr-10Si 比例的觸媒。而且由實驗發現在全部的觸媒反應中，以Fe-Cr-10Si 比例的觸媒達100%轉化率及100%選擇率所需的溫度為最低。至於觸媒的特性分析是以SEM、XRD、ESCA、BET等儀器來測試 。 Abstract The purpose of this thesis is to develop an active and selective catalyst for the hydrogenation of SO2. Iron compounds supported on r-Al2O3 and SiO2 were studied. The catalysts used including: (1) Fe/ r-Al2O3 prepared from FeSO4·7H20, (2) Fe/ r-Al2O3 made from Fe(NO3)3·9H2O, (3)Fe-Cr-Si. The reaction tests were performed at several reaction temperatures by using catalysts with various atom ratios. For the 1st type catalysts, we found that 200% Fe/ r-Al2O3 had the best catalytic performance (conversion of SO2 and selectivity of H2S). For the 2nd type catalysts, 300% Fe/ r-Al2O3 had the highest catalytic activity. For the 3rd type catalysts, experimental results indicate that Fe-Cr-10Si has the best performances among the catalysts we have studied. The characterization of all the catalysts were performed by SEM、XRD、ESCA and BET.
