Synthesis and characterization of lead Chevrel phase thin films for hydrodesulfurization catalysis

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Chemistry of Materials

DOI:https://doi.org/10.1021/cm00048a019· OSTI ID:39391

Schewe-Miller, I M; Koo, K F; Columbia, M; Li, F; Schrader, G L ^[1]

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1. Iowa State Univ., Ames, IA (United States)

Reactive sputtering has been used to prepare the lead Chevrel phase PbMo{sub 6}S{sub 8} on several substrates. The effect of processing parameters such as H{sub 2}S flow rate, Pb sputtering current, substrate temperature, and annealing temperature were found to be very important in determining sample purity. Formation of PbMo{sub 6}S{sub 8} from an as-deposited material apparently occurred at significantly lower annealing temperatures (400-800{degrees}C), compared to conventional solid-state preparations (1000{degrees}C). The thin films of PbMo{sub 6}S{sub 8} were active thiophene hydrodesulfurization catalysts: the absence of impurities including MoS{sub 2} could be confirmed for these materials, before and after reaction. Because the characteristic catalytic properties of the lead Chevrel phases were observed, reactive sputtering may be applicable for the preparation of other Chevrel phases on catalyst supports. 54 refs., 11 figs., 4 tabs.

• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 39391
• Journal Information: Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 12 Vol. 6; ISSN 0897-4756; ISSN CMATEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
CATALYTIC EFFECTS
DESULFURIZATION
LEAD SULFIDES
MOLYBDENUM SULFIDES
SYNTHESIS
THIOPHENE