Relationship between the molybdenum phases and the conversion of n-butane over Mo/HZSM-5

Aromatization of n-hexane on Mo2C catalysts

“…The study of the chemistry of CH 3 and CH 2 species on Mo 2 C/Mo(100) surface in UHV conditions confirmed that both radicals can recombine on the Mo 2 C surface [12,13]. Further works disclosed the Mo 2 C/ZSM-5 is an active catalyst for the aromatization of the other lower alkanes, such as ethane [14], propane [15], n-butane [16][17][18][19] and iso-butane [20]. Aromatic compounds, however, were not detected, or only in trace amounts, on unsupported Mo 2 C in either case.…”

Aromatization of ethanol on Mo2C/ZSM catalysts

“…In the present work an account is given on the conversion of ethanol into aromatics, which received very little attention, yet. As a catalyst we use Mo 2 C-containing ZSM-5 zeolite, which proved to be an effective material in the aromatization of methane [2][3][4][5][6][7][8] and various alkanes [12,13].…”

Aromatization of isobutane and isobutene over Mo2C/ZSM-5 catalyst

“…Since Mo 2 C on ZSM-5 had been found to be an effective catalyst for the aromatization of methane [5][6][7][8][9][10][11][12], its catalytic performance was also examined in the conversion of other light alkanes into aromatics [13][14][15][16][17][18][19]. Recently it was found that as n-butane is mainly cracked on ZSM-5, the deposition of Mo 2 C on this zeolite altered the reaction pathway, and the formation of benzene and xylene comes www.elsevier.com/locate/apcata Applied Catalysis A: General 278 (2004) 111-121 into prominence [16][17][18][19].…”

“…Recently it was found that as n-butane is mainly cracked on ZSM-5, the deposition of Mo 2 C on this zeolite altered the reaction pathway, and the formation of benzene and xylene comes www.elsevier.com/locate/apcata Applied Catalysis A: General 278 (2004) 111-121 into prominence [16][17][18][19]. The preparation and pretreatment of Mo 2 C/ZSM-5 as well as the amount of Mo 2 C and the composition of ZSM-5 all influenced the performance of the catalyst.…”

“…The preparation and pretreatment of Mo 2 C/ZSM-5 as well as the amount of Mo 2 C and the composition of ZSM-5 all influenced the performance of the catalyst. As concerns the role of Mo 2 C, it was assumed that its predominant role is the activation of n-butane: ZSM-5 promotes mainly the coupling and the oligomerization of butene through its Brönsted acidic sites [16][17][18][19]. There were, however, two other observations, which led to the refinement of this picture [19]: (i) Mo 2 C on SiO 2 , which does not posses Brönsted sites, also catalyzed the aromatization of n-butane; (ii) Mo 2 C on ZSM-5 exerted only a slight influence on the aromatization of 1-butene occurring on ZSM-5.…”