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Study on hydrodesulfurization mechanism of 4,6-dimethyldibenzothiophene I. Catalytic behavior of NiW-based catalysts
Zuo, DH; Xie, YP; Nie, H; Shi, YH; Li, C
KeywordNickel Tungsten Alumina Silica Supported Catalyst Hydrodesulfurization 4 Isomerization 6-dimethyldibenzothiophene
Source PublicationCHINESE JOURNAL OF CATALYSIS
2002-05-01
Volume23Issue:3Pages:271-275
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordDEEP HYDRODESULFURIZATION ; LIGHT OIL ; SUBSTITUTED DIBENZOTHIOPHENES ; SUPPORTED SULFIDES ; SULFUR-COMPOUNDS ; MOLYBDENUM ; ALKYLDIBENZOTHIOPHENES ; DESULFURIZATION ; FUNCTIONALITIES ; COMPLEXES
AbstractNiW-based catalysts supported on gamma-Al2O3, amorphous silica-alumina and rare earth HY zeolite-containing gamma-Al2O3, respectively, were prepared by incipient wetness co-impregnation method. Hydrodesulfurization (HDS) of 4, 6-dimethyldibenzothiophene (DMDBT) was performed in a continuous flow microreactor under the conditions of p = 4.14 MPa and theta = 270 similar to 330 degreesC. The DMDBT was dissolved in decane to obtain 0.1% sulfur solution. The liquid products were analyzed by GC-FID equipped with a capillary column. The results showed that the NiW-based catalysts exhibit better performance for desulfurization and hydrogenation of DMDBT, and the main product is dimethylcyclohexylbenzene with selectivity of 59.4%. The enhancement of hydrogenation activity is the most effective way to increase HDS activity. The enhancement of support acidity favors direct desulfurization and leads to a small amount of cracking products. NiW catalysts on acidic supports can transform DMDBT into isomers by migrating methyl groups adjacent to the S atom, which also favors desulfurization of DMDBT. However, their hydrogenation activity is inferior to that of alumina-supported sample. Based on the experimental results, the different reaction pathways of DMDBT transformation were proposed.
Language英语
WOS IDWOS:000176236500018
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139152
Collection中国科学院大连化学物理研究所
Affiliation1.SINOPEC, Res Inst Petr Proc, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zuo, DH,Xie, YP,Nie, H,et al. Study on hydrodesulfurization mechanism of 4,6-dimethyldibenzothiophene I. Catalytic behavior of NiW-based catalysts[J]. CHINESE JOURNAL OF CATALYSIS,2002,23(3):271-275.
APA Zuo, DH,Xie, YP,Nie, H,Shi, YH,&Li, C.(2002).Study on hydrodesulfurization mechanism of 4,6-dimethyldibenzothiophene I. Catalytic behavior of NiW-based catalysts.CHINESE JOURNAL OF CATALYSIS,23(3),271-275.
MLA Zuo, DH,et al."Study on hydrodesulfurization mechanism of 4,6-dimethyldibenzothiophene I. Catalytic behavior of NiW-based catalysts".CHINESE JOURNAL OF CATALYSIS 23.3(2002):271-275.
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