以H_2S为毒物,H_2-O_2反应为催化模型反应,制备并考察了一系列不同酸碱性的负载型钯催化剂。以NH_3和吡啶为探针分子,用程序升温脱附(TPD)或红外光谱法测定了催化剂的酸碱性。用交替脉冲微反色谱技术评价了催化剂的活性和耐硫中毒性,并对催化剂的耐硫性能和载体酸碱性进行关联和解释。在以上研究基础上,指出了提高催化剂抗硫性能的途径。 H_2S as a poison, H_2-O_2 reaction as a catalytic model reaction, prepared and investigated a series of different acid-base supported palladium catalyst. Using NH 3 and pyridine as probe molecules, the acidity and basicity of the catalyst were determined by temperature programmed desorption (TPD) or infrared spectroscopy. The activity of the catalyst and the resistance to sulfur poisoning were evaluated by using alternate pulse microreaction technique. The sulfur tolerance of the catalyst and the acidity and basicity of the carrier were also correlated and explained. Based on the above studies, the ways to improve the sulfur resistance of the catalyst are pointed out.