Synthesis of NiMo catalysts supported on mesoporous Al-SBA-15 with different morphologies and their catalytic performance of DBT HDS

SBA-15 with different morphologies was synthesized via a facile method

Daowei Gao

2014

Scholarcy highlights

  • SBA-15 with different morphologies was synthesized via a facile method
  • The morphology of Al-SBA-15 plays a vital role in the DBT HDS performance
  • The characterization results of X-ray fluorescence spectroscopy, X-ray power diffraction, N2 adsorption–desorption and 27Al nuclear magnetic resonance spectroscopy revealed that the chemical grafting of aluminum chloride on the surface of SBA-15 was the best post-synthesis route for the preparation of Al-SBA-15 with different morphologies
  • The catalytic results showed that the morphologies and mesochannels of SBA-15 played an important role in the catalytic performance of DBT HDS over NiMo catalysts, especially in the diffusivity of DBT molecules in the catalysts, while they have little effect on the selectivity of DBT HDS
  • The kinetics investigations confirmed that the activity of DBT HDS over these catalysts followed the order: long-rod catalyst < hexagonal prism catalyst < short-rod catalyst < sphere catalyst
  • The high activity of the last one was attributed to the superior diffusion of the supports and the better dispersion of the active components

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