摘要
采用碱处理法制备多级孔Hβ沸石,以不同比例与Al_2O_3混合,得到由Hβ沸石与Al_2O_3组成的混合载体,再采用等体积浸渍法制备了NiWP/Hβ-Al_2O_3系列催化剂。通过XRD、BET和NH3-TPD等手段对载体及催化剂进行了表征,以催化裂化柴油(FCC)为原料,在小型固定床反应器上,研究了多级孔Hβ沸石对NiWP/Hβ-Al_2O_3催化剂加氢反应性能的影响。结果表明,载体中加入质量分数为15%Hβ沸石,NiWP/Hβ-Al_2O_3催化剂柴油加氢性能最好;在该催化剂上,360℃、8.0 MPa、体积空速为1.0 h^(-1)和氢油体积比800的操作条件下,脱硫率达到99.77%,催化裂化柴油的密度由0.927 g/cm^3下降到0.837 g/cm^3,十六烷值由13.78提高到55.39。
Hβ-Al2O3 composite supports were prepared through mechanically mixing Al2O3 with hierarchically mesoporous Hβ zeolite obtained by desilication with Na OH solution; bifunctional NiWP / Hβ-Al2O3 catalysts were then obtained by impregnation method. The composite supports and NiWP / Hβ-Al2O3 catalysts were characterized by XRD,BET and NH3-TPD; the effect of Hβ addition on the catalytic performance of NiWP /Hβ-Al2O3 in diesel oil hydro-upgrading was investigated in a fixed bed reactor with fluid catalytic cracking（ FCC） diesel as the feed. The results showed that by adding 15% Hβ in the Hβ-Al2O3 composite support,NiWP / Hβ-Al2O3 catalyst performs best in diesel oil hydro-upgrading; under 360 ℃,8 MPa,volume space velocity of 1. 0 h^（-1） and volumetric hydrogen / oil ratio of 800,the desulfurization degree reaches 99. 77%,the density of FCC diesel oil is decreased from 0.927 to 0.837 g / cm^3,while the cetane value is increased from 13.78 to 55.39.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2016年第4期470-476,共7页
Journal of Fuel Chemistry and Technology
基金
辽宁省教育厅(L2014152)项目资助~~
关键词
碱处理
HΒ沸石
催化裂化柴油
加氢脱芳
加氢脱硫
alkali treatment
Hβ zeolite
FCC diesel oil
hydro-dearomatization
hydrodesulfurization
