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Structure and activity of dispersed Co, Ni, or Mo sulfides for slurry phase hydrocracking of vacuum residue
Journal of Catalysis ( IF 7.3 ) Pub Date : 2018-06-02 , DOI: 10.1016/j.jcat.2018.05.002
Sung-Ho Kim , Ki-Duk Kim , Donghun Lee , Yong-Kul Lee

The effects of Co, Ni, or Mo precursors having different oil solubility and oxidation state on the slurry phase hydrocracking (HCK) of vacuum residue (VR) was investigated at 673 K and 9.5 MPa H2. X-ray diffraction and extended X-ray absorption fine structure spectroscopy were used to obtain structural properties of the dispersed catalyst. Under standard operating condition, the metal precursors were found to form nanoscaled dispersed particles of MoS2, Co9S8, and Ni3S2, with the following VR HCK performances in the order MoS2 > Co9S8 ≫ Ni3S2, based on the same metal loading of 0.113 mmol. Among the oil-soluble Mo precursors such as Mo-hexacarbonyl, -octoate, and -naphthenate, it was observed that Mo-octoate having an intermediate oxidation state forms the smallest particles of 5.8 nm in size and shows the best activity in the VR HCK.



中文翻译:

分散的Co,Ni或Mo硫化物的结构和活性,用于真空渣油的淤浆相加氢裂化

研究了在673 K和9.5 MPa H 2下具有不同油溶性和氧化态的Co,Ni或Mo前驱物对真空渣油(VR)的淤浆相加氢裂化(HCK)的影响。X射线衍射和扩展的X射线吸收精细结构光谱用于获得分散的催化剂的结构性质。在标准操作条件下,发现金属前体以形成硫化钼的纳米级分散粒子2,钴9小号8和Ni 3小号2,与在顺序的MoS以下VR HCK表演2  >共9小号8  »的Ni 3小号2个,基于相同的金属负载量0.113 mmol。观察到在油溶性Mo前驱体中,例如Mo-六羰基,-辛酸酯和-环烷酸酯,具有中等氧化态的Mo-辛酸酯形成最小的5.8 nm颗粒,并在VR HCK中显示出最佳的活性。 。

更新日期:2018-06-02
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