NDLI: Effect of Annealing Temperature on Co–MoS2 Nanosheets for Hydrodesulfurization of Dibenzothiophene

Content Provider	Springer Nature Link
Author	Wu, Zhuangzhi Whiffen, Victoria M. L. Zhu, Wei Wang, Dezhi Smith, Kevin J.
Copyright Year	2013
Abstract	The effect of annealing temperature on the structure of unsupported Co-promoted MoS2 nanosheets, prepared by mechanical activation of MoO3, S and Co(NO3)2·6H2O followed by annealing in an Ar atmosphere, is reported. An increase in annealing temperature reduced the catalyst surface area but increased the MoS2 stack height. Annealing temperatures above 600 °C also produced segregated CoxSy phases. The dibenzothiophene hydrodesulphurization activity and the direct desulfurization (DDS) to hydrogenation product ratio of the Co–MoS2 catalysts was significantly higher than for MoS2. Moreover, the DDS product selectivity of the Co–MoS2 catalysts was enhanced with increased annealing temperature up to 600 °C. Above 600 °C, the loss in activity and selectivity was due to segregation of CoxSy species and significant sintering of the MoS2 crystallites. Similar effects of high temperature sintering on the activity of MoS2 were also observed.
Starting Page	261
Ending Page	267
Page Count	7
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	144
Issue Number	2
e-ISSN	1572879X
Language	English
Publisher	Springer US
Publisher Date	2013-11-06
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrodesulfurization Dibenzothiophene MoS2 Nanosheets Annealing temperature Catalysis Industrial Chemistry/Chemical Engineering Organometallic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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