摘要
采用溶胶-凝胶法制备出三元复合载体TiO2-ZrO2-SiO2并负载磷化钼,以其为载体原位还原制备出加氢脱氮催化剂MoP/TiO2-ZrO2-SiO2。以喹啉为模型化合物,考察了三元复合载体TiO2-ZrO2-SiO2中Ti/Zr/Si的不同配比和还原条件对催化剂加氢脱氮性能的影响。结果表明,n(Ti)/n(Zr)/n(Si)为6∶1∶10的复合载体其比表面积和孔结构最为理想,在升温速率为2℃/min,还原H2流速为60 mL/min,还原压力为0.5 MPa,还原终温为600℃的最佳还原条件下,其加氢脱氮率达97.85%。
An new kind of ternary composite carrier TiO 2-ZrO 2-SiO 2 were prepared by sol-gel method.Based on the carrier the supported hydrodenitrogenation(HDN) catalyst MoP/TiO 2-ZrO 2-SiO 2 were prepared in a fixed bed reactor by an in-situ reduction method.The effects of Ti/Zr/Si mole ratio in TiO 2-ZrO 2-SiO 2 and the reductive conditions on the HND activities of the catalyst were investigated using quinoline as model compound.The results showed that the composite carrier with n(Ti)/ n(Zr)/ n(Si) of 6∶1∶10 had a...
出处
《石化技术与应用》
CAS
2010年第2期91-95,共5页
Petrochemical Technology & Application
关键词
复合载体
磷化钼
催化剂
加氢脱氮
溶胶-凝胶法
原位还原
composite carrier
molybdenum phosphide
catalyst
hydrodenitrogenation
sol-gel method
in-situ reduction
