Aromatization of n-butane and 1-butene over supported Mo2C catalyst

Aromatization of n-hexane on Mo2C catalysts

“…If we accept that the formation of benzene occurs through the two consecutive steps (equation 1 and 2), the enhanced rate of benzene formation could be the consequence of the higher concentration of hexene formed. The same phenomenon was experienced in the aromatization of C 1 -C 4 alkanes Mo 2 C/SiO 2 catalysts [18][19][20]. In the explanation of the catalytic performance of Mo 2 C on SiO 2 the following points should be considered: (i) the preparation of Mo 2 C on SiO 2 surface does not create Bronstead sites, (ii) it leads, however, to the formation of stronger Lewis acid sites on the silica.…”

“…Catalytic reaction was carried out at 1 atm of pressure in a fixed-bed, continuous flow reactor consisting of a quartz tube connected to a capillary tube [7,19]. The flow rate was in most cases 12 mL/min.…”

“…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.…”

Template‐Synthesized Porous Silicon Carbide as an Effective Host for Zeolite Catalysts

“…To verify the effectiveness of this complex method, ZSM-5/porous-SiC was loaded with molybdenum (6 wt %) and applied in a methane dehydroaromatization reaction, in which methane, the most stable alkane molecule, was converted to aromatics and hydrogen. [26][27][28][29][30] It is believed that the molybdenum species serves as the active component for methane activation, whereas the zeolite provides its Brøn-A C H T U N G T R E N N U N G sted acid sites and a porous structure for successive agglo-A C H T U N G T R E N N U N G meration and aromatization reactions. [31,32] Therefore, the catalytic activity of the Mo-ZSM-5/porous-SiC composite was tested in this reaction, with the free-standing ZSM-5 sample synthesized under the same conditions (same hydrothermal bomb) used to prepare the Mo-ZSM-5 catalyst as a control.…”

Thermal Non‐Oxidative Aromatization of Light Alkanes Catalyzed by Gallium Nitride

“…Therefore, vast and low-cost light alkanes (C 1 -C 6 alkanes), such as natural gas (methane) and liquified petroleum gas (propane or butane), are becoming more and more attractive for the production of aromatic hydrocarbons. [1][2][3][4][5][6][7] Tremendous attempts have been made for such conversions and several promising catalyst systems have been developed, such as the metal-modified zeolites, [8][9][10][11] the pincer-ligated iridium homogeneous complexes, [12] and the lattice-confined single iron sites embedded within a silica matrix. [13] Notably, gallium species in diverse forms turned out to bear remarkable potential for the activation of C À H bonds of light alkanes [14][15][16][17][18] and the selective catalytic reduction (SCR) of nitric oxide by methane.…”