摘要
采用光学显微镜、激光粒度仪、XRD等分析手段研究了助剂在催化剂分散硫化过程中的影响。结果表明,助剂的加入能提高催化剂在渣油中的分散度,添加助剂SA1后,催化剂前体溶液在渣油中分散形成的液滴直径从3.0μm减小到2.0μm以下;分散硫化完成后催化剂颗粒平均粒径从1.19μm减小到0.59μm。助剂可以提高催化剂硫化态NiS2和Fex-1Sx晶体的晶粒分散度,促使它们之间的接触更为充分,使部分Ni原子取代Fe原子占据Fex-1Sx晶体上的某些晶格,形成高分散度的FeNiS2混晶。
Effect of adjuvant on the process of catalyst dispersion and sulfuration was characterized by microscope, laser granularity meter and XRD. Results indicated that adjuvant could enhance the dispersity of catalyst in residual oil. After the adjuvant SA1 was added, the diameter of catalyst droplet dispersed in the residual oil was reduced from 3.0 μm to 2.0 μm, and the average size of catalyst particle after sulfuration was reduced from 1.19 μm to 0.59 μm. The crystal dispersity of metallic sulfides （NiS2 and Fex-1Sx） was enhanced when adjuvant was added, then the contact of them was much easier, and some lattices of Fex-1Sx were substituted by nickel atom, finally a mixed crystal （FeNiS2） with more dispersity was formed.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2009年第3期420-424,共5页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
教育部创新团队"重质油高效转化的绿色化学与工程"项目资助
关键词
悬浮床加氢裂化
助剂
分散型催化剂
分散
slurry-bed hydrocracking
adjuvant
dispersed catalyst
dispersion
