Investigation of CeO2, MoO3, and Ce2(MoO4)3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion

Pryston, Dhara Beatriz de Amorim; Martins, Thatiane Veríssimo dos Santos; Vasconcelos Júnior, Jailton Alves de; Avelino, Débora Olimpio da Silva; Meneghetti, Mario Roberto; Meneghetti, Simoni Margareti Plentz

doi:10.3390/catal13010004

Open AccessArticle

Investigation of CeO₂, MoO_3, and Ce₂(MoO₄)_3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion

by

Dhara Beatriz de Amorim Pryston

,

Thatiane Veríssimo dos Santos Martins

,

Jailton Alves de Vasconcelos Júnior

,

Débora Olimpio da Silva Avelino

,

Mario Roberto Meneghetti

and

Simoni Margareti Plentz Meneghetti

^*

Group of Catalysis and Chemical Reactivity, Institute of Chemistry and Biotechnology, Federal University of Alagoas, Av. Lourival Melo Mota, Tabuleiro do Martins, Maceió 57072-970, AL, Brazil

^*

Author to whom correspondence should be addressed.

Catalysts 2023, 13(1), 4; https://doi.org/10.3390/catal13010004

Submission received: 9 November 2022 / Revised: 14 December 2022 / Accepted: 16 December 2022 / Published: 20 December 2022

(This article belongs to the Special Issue Transition-Metal-Containing Bifunctional Catalysts: Design and Catalytic Applications)

Download

Browse Figures

Versions Notes

Abstract

Cerium oxide (Ce100), molybdenum oxide (Mo100), and a material containing Ce and Mo (CeMo) were synthesized by the Pechini method, using glycerol as a polyol. These materials were applied for fructose conversion in an aqueous medium. The characterization results show the formation of cerium molybdate (Ce₂(MoO₄)₃) for CeMo. Ce100 presented good thermal stability, and Mo100 sublimation of MoO₃ and polymolybdates was verified. CeMo exhibited a mass loss of 19%, associated with the sublimation of MoO₃ and polymolybdate species. Additionally, the existence of Bronsted and Lewis acid sites was confirmed, and the addition of Mo to Ce was an efficient strategy to increase the acidity. Regarding the catalytic activity (150 °C and 0.5 to 6 h), Ce100 exhibited low conversions and high selectivity to 5-hydroxymethylfurfural (5-HMF). For Mo100, high conversions, with a significant formation of insoluble materials, were detected. For CeMo, beyond the high activity, a lower formation of insoluble materials was noted. In this case, selectivity toward products from the retro–aldolic route and 5-HMF were obtained. These results indicate that the main factor influencing fructose conversion is an adequate combination of the acid sites. Recycling experiments were carried out, and stability was observed for four cycles, confirming the robustness of this system.

Keywords: cerium oxide; molybdenum oxide; cerium molybdate; biomass; biorefinery

Graphical Abstract

Share and Cite

MDPI and ACS Style

Pryston, D.B.d.A.; Martins, T.V.d.S.; Vasconcelos Júnior, J.A.d.; Avelino, D.O.d.S.; Meneghetti, M.R.; Meneghetti, S.M.P. Investigation of CeO₂, MoO_3, and Ce₂(MoO₄)_3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion. Catalysts 2023, 13, 4. https://doi.org/10.3390/catal13010004

AMA Style

Pryston DBdA, Martins TVdS, Vasconcelos Júnior JAd, Avelino DOdS, Meneghetti MR, Meneghetti SMP. Investigation of CeO₂, MoO_3, and Ce₂(MoO₄)_3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion. Catalysts. 2023; 13(1):4. https://doi.org/10.3390/catal13010004

Chicago/Turabian Style

Pryston, Dhara Beatriz de Amorim, Thatiane Veríssimo dos Santos Martins, Jailton Alves de Vasconcelos Júnior, Débora Olimpio da Silva Avelino, Mario Roberto Meneghetti, and Simoni Margareti Plentz Meneghetti. 2023. "Investigation of CeO₂, MoO_3, and Ce₂(MoO₄)_3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion" Catalysts 13, no. 1: 4. https://doi.org/10.3390/catal13010004

APA Style

Pryston, D. B. d. A., Martins, T. V. d. S., Vasconcelos Júnior, J. A. d., Avelino, D. O. d. S., Meneghetti, M. R., & Meneghetti, S. M. P. (2023). Investigation of CeO₂, MoO_3, and Ce₂(MoO₄)_3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion. Catalysts, 13(1), 4. https://doi.org/10.3390/catal13010004

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Menu

Investigation of CeO₂, MoO_3, and Ce₂(MoO₄)_3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Further Information

Guidelines

MDPI Initiatives

Follow MDPI