Selective Production of Aromatics from 2-Octanol on Zinc Ion-Exchanged MFI Zeolite Catalysts

Iwamoto, Masakazu; Takezawa, Ryota; Morimoto, Masao

doi:10.3390/catal5042122

Cited by 3 publications

(2 citation statements)

References 38 publications

(79 reference statements)

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“…Furthermore, there was no noticeable peak(s) to show the presence of ZnO from the XRD patterns and this could be attributed to the detection limit of the XRD analyzer used as only 2 wt % ZnO was impregnated for all the catalysts. A zinc content of 0.5−2 wt % was determined by Iwamoto et al 19 to exhibit good and stable activity for the aromatization reaction at 350−550 °C range.…”

Section: Resultsmentioning

confidence: 99%

Highly Selective Hierarchical ZnO/ZSM-5 Catalysts for Propane Aromatization

et al. 2020

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Hierarchical ZnO/ZSM-5 catalysts were prepared by desilication and impregnation with 2 wt % metallic ZnO. X-ray diffraction and Fourier transform infrared (FTIR) results showed that the structures of the hierarchical zeolites were relatively preserved despite desilication but were accompanied with sequential loss in crystallinity, likewise Bro̷ nsted acidity causing decline in conversion or activity of the catalyst. However, pyridine FTIR shows enhancement of the Bro̷ nsted acidic sites. Throughout the activity test, the hierarchical ZnO/ZSM-5 catalysts showed an outstanding performance within 5 h on stream with the average aromatic (benzene, toluene, and xylenes) selectivity trend, represented by their NaOH concentrations 0.3 M > 0.4 M > 0.2 M > 0.1 M corresponding to 61.0, 53.5, 40.3, and 36.8%, respectively. Their average propane conversions within the same period followed a consecutive trend 0.1 M > 0.2 M > 0.3 M > 0.4 M conforming to 34.1, 24.8, 17.3, and 10.2%, respectively. These were compared with that of the reference (ZnO/ZSM-5), which exhibited an average aromatic selectivity of 25.2% and propane conversion of 39.7%. Furthermore, the hierarchical catalyst generally displayed a low amount of C9+ heavier aromatics with the ZnO/ZSM-5(0.3 M) catalyst having the lowest C9+ selectivity of 23.7% compared to the reference catalyst with 72.7% at the same time on stream.

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Section: Resultsmentioning

confidence: 99%

Highly Selective Hierarchical ZnO/ZSM-5 Catalysts for Propane Aromatization

et al. 2020

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“…Additional contributions to the Special Issue included the selective production of aromatics from 2-octanol on Zn-exchanged MFI zeolites [12], the electrocatalytic oxidation of cellulose to gluconate on carbon aerogel supported gold nanoparticles anodes [13] and the steam reforming of bioethanol to hydrogen catalyzed by Co/ceria catalysts [14].…”

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confidence: 99%