Synthesis of NiMo catalysts supported on mesoporous silica FDU-12 with different morphologies and their catalytic performance of DBT HDS

Synthesis of zirconium modified FDU-12 by different methods and its application in dibenzothiophene hydrodesulfurization

“…8, the spectra of Mo 3d are decomposed into three contributions, which are Mo 4+ , Mo 5+ , and Mo 6+ respectively. For all the catalysts, the high intensied peaks at 229.3 eV and 232.4 eV, which have a xed intensity ratio of 3 : 2, 21,29,30 are attributed to the Mo 4+ 3d 3/2 and 3d 5/2 , proving the formation of MoS 2 species. The relatively high intensied peaks at 232.9 eV and 236.0 eV are assigned to Mo 6+ 3d 3/2 and 3d 5/2 , indicating that partial Mo species in oxidation states still exist on the surface of the catalysts aer the suldation.…”

Structural Screening and Design of Dendritic Micro–Mesoporous Composites for Efficient Hydrodesulfurization of Dibenzothiophene and 4,6-Dimethyldibenzothiophene

“…10,11 As the typical stubborn sulfocompounds, DBT and 4,6-DMDBT are usually taken as the feedstock in the study of ultra-deep HDS of transportation fuels. [12][13][14][15][16][17] Traditional HDS catalysts of alumina supported tungsten or molybdenum promoted by nickel or cobalt have been identified unable to meet the requirements of the latest ultra-deep HDS due to their high metal-support interaction (MSI) and low hydrogenation activity. [18][19][20][21][22] In order to ultra-deep removal of sulfur in transportation fuels, design of new HDS catalytic materials and catalysts for realizing high efficiency of hydrogenolysis of sulfides is needed.…”

Dendritic micro–mesoporous composites with center-radial pores assembled by TS-1 nanocrystals to enhance hydrodesulfurization activity of dibenzothiophene and 4,6-dimethyldibenzothiophene

“…As environmental laws and regulations for transportation fuels becomes stricter, the production of ultralow-sulfur fuels has received increasing attention to improve the fuel quality and to reduce the exhaust emission [1][2][3][4][5]. To achieve these goals, the refractory sulfur compounds, such as DBT and 4,6-DMDBT must be removed from the transportation fuels [6][7][8][9][10], in which 4,6-DMDBT is one of the most challenging species to be removed from the raw oils due to its high steric resistance [11][12][13][14].…”