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Physicochemical Properties and Catalytic Performance of MEL Zeolites Synthesized by Steam-Assisted Conversion

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Abstract

MEL-type zeolite was synthesized by a novel steam-assisted crystallization method. This zeolite was characterized by X-ray diffraction, low-temperature nitrogen adsorption/desorption, scanning electron microscopy, and X-ray fluorescence analysis. IR spectroscopy of probe molecules (pyridine and 2,6-di-tert-butylpyridine) was used to characterize the acidic properties of this sample. The MEL zeolite synthesized by steam-assisted crystallization consisted of aggregated nanocrystals up to 300 nm in size and exhibited a high phase purity, a large micropore volume (0.13 cm3/g), and high concentrations of both Brønsted and Lewis acid sites. When tested in oligomerization of a butane–butylene fraction and hydroconversion of n-hexadecane, this MEL zeolite proved to be comparable to MFI-type zeolites in terms of catalytic performance.

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Funding

The synthesis and physicochemical characterization of the catalysts, as well as testing their catalytic performance and deactivation resistance in BBF oligomerization, were performed with financial support from the Russian Science Foundation (RSF Grant No. 23-73-00005), https://rscf.ru/project/23-73-00005/.

The catalytic test of the zeolites in hydroconversion of n-hexadecane was performed within the State Program “Physical Chemistry of Surface, Adsorption and Catalysis,” https://istina.msu.ru/projects/326797387/.

The zeolite phase compositions were characterized with financial support from the national project “Science and Universities”.

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Authors and Affiliations

  1. Lomonosov Moscow State University, 119991, Moscow, Russia

    V. A. Artamonova, A. G. Popov & I. I. Ivanova

  2. OOO Zeolitica, 119234, Moscow, Russia

    V. A. Artamonova & I. I. Ivanova

Authors
  1. V. A. Artamonova
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  2. A. G. Popov
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  3. I. I. Ivanova
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Correspondence to V. A. Artamonova.

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I.I. Ivanova, a co-author, is the editor in chief at the “Sovremennye molekulyarnye sita” (Advanced Molecular Sieves) Journal. The other co-authors declare no conflict of interest requiring disclosure in this article.

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Artamonova, V.A., Popov, A.G. & Ivanova, I.I. Physicochemical Properties and Catalytic Performance of MEL Zeolites Synthesized by Steam-Assisted Conversion. Pet. Chem. 63, 699–707 (2023). https://doi.org/10.1134/S0965544123050067

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