Journal
CATALYSIS TODAY
Volume 366, Issue -, Pages 97-102Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2020.03.030
Keywords
Aromatization; Pyridin FTIR; Zn-modified ZSM-5 zeolite; Boron promoter
Funding
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [104.05-2018.306]
- Spanish Government-MICINN [SEV-2016-0683, RTI2018-101033-B-I00]
- Fundacion Ramon Areces through the Life and Materials Science program
- Generalitat Valenciana [AICO/2019/060]
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The study investigated the characterization and catalytic performance of Zn/ZSM-5 and Zn-B/ZSM-5 catalysts in n-hexane aromatization. Zinc incorporation decreased the Bronsted acid site density and increased the Lewis acidic sites, while boron presence slightly decreased the initial catalyst activity but slowed down its deactivation rate.
The characterization and catalytic performance of Zn/ZSM-5 and Zn-B/ZSM-5 catalysts in the n-hexane aromatization was reported. Catalysts were prepared by post-synthesis ion exchange and thoroughly characterized by means of XRD, Py-FTIR, N-2 adsorption, Al-27 and B-11 MAS NMR spectroscopy and electron microscopy techniques. The incorporation of zinc reduces the Bronsted acid site density and increases the Lewis acidic sites of the final ZSM-5 based catalysts. The presence of boron slightly reduces the initial activity of the catalyst but slows down its deactivation rate.
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