Effects of dispersed Mo catalysts and H{sub 2}O addition on hydrogenation and hydrocracking of 4-(1-naphthylmethyl)bibenzyl
- Pennsylvania State Univ., University Park, PA (United States)
This paper reports our results on the effects of dispersed Mo catalysts and H{sub 2}O addition on hydrogenation and C-C bond hydrocracking of 4-(1-naphthylmethyl)bibenzyl, abbreviated as NMBB. Batch studies in micro reactors (initial cold H{sub 2} pressure of 6.9 MPa) revealed that active catalysts can be generated in situ from either ammonium tetrathiomolybdate (ATTM) or Mo(CO){sub 6} under the reaction conditions (350 or 400{degrees}C, 30 min) with the main catalysis of the latter for NMBB hydrogenation, but the former for C-C bond cleavage. At 350 {degrees}C hydrocracking of NMBB proceeds with ATTM, with the bond cleavage occurring at the C-C bond between naphthyl and bibenzylmethyl groups to produce naphthalene and 4-methylbibenzyl. Runs at 350 {degrees}C using Mo(CO){sub 6} lead to tetrahydro-NMBB-derivatives and few cleavage products. Water added to MO(CO){sub 6} suppressed hydrogenation. The combination Mo(CO){sub 6} and S lead to almost complete conversion of NMBB. A run with Mo(CO){sub 6}/S/H{sub 2}O gave similar results. It appears that water can increase NMBB conversion with ATTM at 350 {degrees}C but decreases conversion for runs at 400{degrees}C.
- DOE Contract Number:
- AC22-92PC92122
- OSTI ID:
- 460128
- Report Number(s):
- CONF-950801--
- Journal Information:
- Preprints of Papers, American Chemical Society, Division of Fuel Chemistry, Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry Journal Issue: 4 Vol. 40; ISSN 0569-3772; ISSN ACFPAI
- Country of Publication:
- United States
- Language:
- English
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