Increasing the catalytic stability of microporous Zn/ZSM-5 with copper for enhanced propane aromatization

Catalytic Pyrolysis of Nonedible Oils for the Production of Renewable Aromatics Using Metal-Modified HZSM-5 Catalysts

“…As shown in Figure b, three absorption peaks were detected for all catalysts. The absorption peaks at around 1451 cm –1 can be attributed to the absorption of pyridine molecules by L acid sites, and the absorption peaks at 1490 cm –1 are simultaneously associated with both B acid sites and L acid sites; moreover, the absorption peaks at 1540 cm –1 are assigned to the B acid sites . Besides, the quantified B acid sites and L acid sites of the parent HZSM-5 were 473.91 and 48.79 μmol/g, respectively.…”

“…The absorption peaks at around 1451 cm –1 can be attributed to the absorption of pyridine molecules by L acid sites, and the absorption peaks at 1490 cm –1 are simultaneously associated with both B acid sites and L acid sites; moreover, the absorption peaks at 1540 cm –1 are assigned to the B acid sites. 55 Besides, the quantified B acid sites and L acid sites of the parent HZSM-5 were 473.91 and 48.79 μmol/g, respectively. As can be observed from Table 5 , the incorporation of metals obviously enhanced the L acid sites and regulated the B/L ratio.…”

Conversion of bio-derived crude glycerol into renewable high-octane gasoline-stock

“…14,15 But, the functionalization of ZSM-5 with dehydrogenation metals such as Zn, Sn, Pt, Pd, Ga, etc., highly improves the selectivity of liquid products, especially gasoline-range aromatics in the aromatization reaction. [16][17][18] Zn 19,20 and Ga 21,22 are known for their aromatization activity 23,24 towards some fossil-based feed-stocks but not much explored for their suitability towards effective processing of bio-derived glycerol, where, the high viscosity of glycerol may limit its processing. The reaction conditions were chosen for aromatic formation from glycerol also observed to cause high gaseous hydrocarbon formation (CO, CO 2 & C 1 -C 4 ) and coke formation.…”

A Convenient Synthesis of Core‐shell ZSM‐5@MoO3 Catalyst for Enhanced Catalytic Properties in Methane Aromatization

“…[1] The process of methane aromatization using the bifunctional catalyst consisting of MFI type zeolite supporting Mo species was first documented in 1993. [2] However, the catalytic properties of the catalyst is still unsatisfactory, owing to a severe catalyst deactivation caused by the heavy carbonaceous deposition. [3] Although many attempts (e. g., preparation of catalysts with the nano particle size [4] or preparation of catalysts with the hierarchical structure [5] ) have been made to reduce carbon deposition, coking problems have been considered one of the greatest challenge, which hinders the commercial viability of this process.…”