【摘要】 提出了汽油经催化裂化脱硫的技术路线，并对催化剂进行了研究.综合采用浸渍和共沉淀法制备的USY/ZnO/Al₂O₃汽油催化裂化脱硫催化剂在固定床反应装置上评价结果表明，具有优异的脱硫活性和硫化物裂化选择性.脱除的硫绝大多数以H₂S的形式进入到裂化气中，仅有少量沉积在催化剂上，这有利于硫的回收利用和环境保护.硫化物的裂化脱硫是裂化和氢转移反应协同作用的结果，高温有利于裂化反应,而相对较低的温度对氢转移有利，420 ℃左右为汽油裂化脱硫的最佳温度是这对矛盾作用的结果.更多还原

【Abstract】 The USY/ZnO/Al₂O₃ catalyst,prepared with impregnation and co-deposition method,for gasoline desulfurization via catalytic cracking was evaluated in a fixed-bed reaction apparatus.The results show that the catalyst has excellent sulfur removal activity and selectivity （Table 1）.Most of the sulfur removed from gasoline is transformed as H₂S into the cracking gas and only a little deposits on the catalyst （Fig.3）,which is very favorable for sulfur recovery and protecting the environment.Cracking desulfurization of sulfide is the result of synergism between cracking and hydrogen transfer.The two reactions require different appropriate temperatures.There is then an optimal temperature at around 420℃for gasoline desulfurization.更多还原