Journal: Journal of Industrial and Engineering Chemistry

Abbreviation

Journal of Ind. & Eng. Chemistry

Publisher

Korean Society of Industrial and Engineering Chemistry

Journal Volumes

ISSN

1226-086X

Description

Filters

2022 - 20232
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Publications 1 - 2 of 2
  • Room-temperature electrochemical deposition of nanostructured ZnO films on FTO substrate and their photoelectrochemical activity
    Item type: Journal Article
    Syrek, Karolina; Tynkevych, Olena; Wojtas, Mateusz; et al. (2023)
    Journal of Industrial and Engineering Chemistry
    The possibility of fabrication of nanostructured ZnO layers on conductive glass substrates via simple room-temperature electrodeposition was studied in detail. The process was carried out in zinc nitrate electrolyte at different potentials for various durations. The morphology, composition, and semiconducting properties of the deposits were examined by various techniques. As-synthesized materials were found to be amorphous and co-deposition of the metallic Zn at more negative potentials was confirmed. Nevertheless, thermal treatment in air results in the successful conversion of the as-deposited precipitate to the wurtzite ZnO. The potential of −1.5 V vs. SCE was identified as optimal to achieve both full coverage of the glass substrate, as well as uniform morphology of the deposits. In general, the photoelectrochemical performance of such kind of ZnO photoanodes was found to be significantly dependent on the electrodeposition duration since this parameter strongly affected the thickness, surface morphology, as well as semiconducting properties of the obtained material. In consequence, the photoanode deposited at −1.5 V vs. SCE for 40 min exhibited the most promising photoelectrochemical activity under studied conditions.
  • Production of jet-fuel-range olefins via catalytic conversion of pentene and hexene over mesoporous Al-SBA-15 catalyst
    Item type: Journal Article
    Dubray, Florent; Paunović, Vladimir; Ranocchiari, Marco; et al. (2022)
    Journal of Industrial and Engineering Chemistry
    The oligomerization of biomass-derived light olefins offers a promising potential for the synthesis of sustainable jet-fuels, which mostly comprise C10-C18 hydrocarbons. However, the selectivity control of oligomerization reaction remains a challenge. In this contribution, oligomerization of pentene and hexene mixtures was studied over acidic mesoporous Al–SBA–15 catalyst in continuous operation, and the impact of different process parameters on conversion and selectivity is thoroughly evaluated. Kinetics evaluation showed that the reactivity of pentene is higher than that of hexene. Selectivity to jet-fuel range products >98% were achievable at low-to-moderate conversions (<50%), while higher conversions (ca. 90%) resulted in selectivities of ca. 75%. Notably, the product distribution at iso-conversion was unaffected by temperature, pressure, and weight hourly space velocity, implicating that adjusting the conversion is the primary way to tune the selectivity of the Al-SBA-15 catalyst. This understanding of the oligomerization process opens the door for the research devoted on the oligomerization of complex olefin mixtures, mimicking the process stream of olefins production units, in order to achieve “biomass to jet-fuel” transformation.
Publications 1 - 2 of 2