Zinc-Containing BEA Zeolites for the Propane Dehydrogenation Reaction: Influence of Adding Yttrium on the Catalytic Properties.

IF 3 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

ChemPlusChem Pub Date : 2025-03-04 DOI:10.1002/cplu.202400723

Svitlana M Orlyk, Nina V Vlasenko, Valeriy I Chedryk, Yurii M Nychiporuk, Frederic Averseng, Yannick Millot, Laetitia Valentin, Jacek Gurgul, Stanislaw Dzwigaj

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引用次数: 0

Abstract

Research results about the structure, acid-base, redox, and adsorption characteristics of zinc(yttrium)-containing dealuminated BEA zeolites (Si/Al=1000), Zn(Y)SiBEA and their catalytic properties in the propane dehydrogenation with CO₂ (CO₂-PDH) are presented. The catalysts were prepared through a two-step procedure involving complete dealumination of the BEA zeolite followed by the introduction of Zn²⁺ and Y³⁺ cations into vacant T-atom sites, by impregnation. The samples obtained were characterized using XRD, XPS, ²⁹Si DP MAS NMR, low-temperature N₂ ad/desorption, TPR-H₂, C₃H₈/C₃H₆ (CO₂, NH₃)-TPD, and FTIR-Py techniques. The influence of zinc content and yttrium on the functional properties of Zn(Y)SiBEA surface and activity/selectivity of the catalysts (Zn_1.0-, Zn_2.0-, and Zn_2.0Y_2.0SiBEA) in the CO₂-PDH process are analyzed. The balanced acid-base characteristics of the Zn(Y)SiBEA catalysts determine their activity/selectivity in the CO₂-mediated propane dehydrogenation to propene. Propane conversion and propene selectivity/yield over Zn(Y)SiBEA catalysts are higher in the CO₂-PDH process compared to direct propane dehydrogenation (without CO₂).

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来源期刊

ChemPlusChem CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

5.90

自引率

0.00%

发文量

200

审稿时长

1 months

期刊介绍： ChemPlusChem is a peer-reviewed, general chemistry journal that brings readers the very best in multidisciplinary research centering on chemistry. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies. Fully comprehensive in its scope, ChemPlusChem publishes articles covering new results from at least two different aspects (subfields) of chemistry or one of chemistry and one of another scientific discipline (one chemistry topic plus another one, hence the title ChemPlusChem). All suitable submissions undergo balanced peer review by experts in the field to ensure the highest quality, originality, relevance, significance, and validity.