Abstract: Fluorination of lanthanum oxide with ammonium fluoride is studied. Among all the known rare earth elements, lanthanum oxide is most commonly used as a stabilizing catalyst component, in particular in the hydrogenation of heteroatomic compounds of biofuel. Previous thermodynamic and thermogravimetric studies point to the multistage fluorination of La2O3 with ammonium fluoride. The reaction kinetics is correctly described by the kinetic equation of a contracting sphere with the activation energy equal to 33.65 kJ/mol. The X-ray phase analysis of the formed crystal phase showed that complex fluorides like (NH4)3La2F9 ⋅ H2O and (NH4)3LaF6 ⋅ 0.5H2Oare formed as impurities during the interaction of La2O3 with NH4F in addition to the major product (LaF3).

Cite: Osipov A.R. , Borisov V.A. , Sigaeva S.S. , Shlyapin D.A. , Lavrenov A.V.
Lanthanum-Containing Catalysts for Hydrogenation: New Possibilities for the Provision of Raw Material to Industry
Chemistry for Sustainable Development. 2019. N6. P.699-703. DOI: 10.15372/csd2019193 WOS РИНЦ OpenAlex

Original: Осипов А.Р. , Борисов В.А. , Сигаева С.С. , Шляпин Д.А. , Лавренов А.В.
Лантансодержащие катализаторы гидропереработки: новые возможности сырьевого обеспечения производства
Химия в интересах устойчивого развития. 2019. Т.27. №6. С.699–703. DOI: 10.15372/KhUR2019193 РИНЦ OpenAlex

Identifiers:

Web of science:	WOS:000571381000021
Elibrary:	46561685
OpenAlex:	W4229583926

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