Glycerol liquid phase conversion over monometallic and bimetallic catalysts: Effect of metal, support type and reaction temperatures

Iriondo, A.; Cambra, J.F.; Barrio, V.L.; Güemez, M.B.; Arias, P.L.; Sánchez-Sánchez, M.C.; Navarro, R.M.; Fierro, J.L.G.

doi:10.1016/j.apcatb.2011.05.009

Cited by 27 publications

(39 citation statements)

References 63 publications

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“…This has been 30 described in the liquid phase conversion of glycerol with metallic catalysts. 42 Some authors have even proposed a kinetic model for the mechanism of catalyst deactivation via over-oxidation with oxygen. This is the case in some reactions of oxidation of alcohols in liquid medium.…”

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confidence: 99%

Deactivation of solid catalysts in liquid media: the case of leaching of active sites in biomass conversion reactions

et al. 2015

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confidence: 99%

Deactivation of solid catalysts in liquid media: the case of leaching of active sites in biomass conversion reactions

et al. 2015

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“…La and Ce species will form mixed oxide phases with support. Moreover, Iriondo et al [45] pointed out that La2O3-Al2O3 can improve the structure stability. Pt-Ni alloys are also good reforming catalysts.…”

Section: Understanding Molecular Behaviors For Glycerol Conversion Onmentioning

confidence: 99%

“…Hence, a number of Pt-based bimetallic catalysts, allowing reduced Pt usage, were studied [40,[45][46][47][48][49][50][51][52]55]. More importantly, additional catalytic functionality can be introduced this way.…”

Section: Catalysts For Glycerol Reformingmentioning

confidence: 99%

Navigating Glycerol Conversion Roadmap and Heterogeneous Catalyst Selection Aided by Density Functional Theory: A Review

Liu

Gao

2018

Catalysts

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Glycerol has been utilized in an extremely diversified manner throughout human civilization-ranging from food, to various consumer products, to pharmaceuticals, and even explosives. Large surplus in glycerol supply thanks to biodiesel production and biomass processing has created a demand to further boost its utility. One growing area is to expand the use of glycerol as an alternative feedstock to supplement fuels and chemicals production. Various catalytic processes have been developed. This review summarizes catalytic materials for glycerol reforming, hydrodeoxygenation, and oxidation. In particular, rationale for catalyst selection and new catalyst design will be discussed aided by the knowledge of reaction mechanisms. The role of theoretical density functional theory (DFT) in elucidating complex glycerol conversion chemistries is particularly emphasized.

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“…Desta maneira, a grande produção de glicerol ( Figura 2) tem se tornado um problema para a produção de biodiesel, tornando-se necessário encontrar novas aplicações para o glicerol, bem como a redução dos custos de produção, estocagem e manuseio do mesmo (IRIONDO et al, 2011 Figura 3: Principais aplicações industriais da glicerina.…”

Section: Enquanto Nos Estados Unidos a Produção Dobrou No Mesmounclassified

“…Entre elas, a geração de combustíveis que não produzam poluentes atmosféricos ou que produzam em pequena quantidade, além de diminuir a dependência econômica de fontes externas de energia (IRIONDO et al,2011).…”

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Desenvolvimento de catalisadores de Ni/CeO2-ZrO2 com adição de promotores para produção de hidrogênio e/ou gás de síntese a partir da reação de reforma a vapor de álcoois

Maia¹

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AGRADECIMENTOSAcredito que sem Deus, sem família e sem pessoas amigas, nenhum trabalho é possível, por isso tenho muito que agradecer: ICP -Madri: Juanma, Rosa, Cristina, a doce Gema, Gofuen, Bárbara, Noelia Alf, Inma, Maria José, Ana Carolina, Maria José (La Wapi!), Silvia, Patri, Maricarmém, Javi, Fran, Aldossari, Beatriz Poceiro, Beatriz Arredondo, Paco CO(g) + 3H2(g) ↔ CH4(g) + H2O(g) Reação 13 ABSTRACTThe growing interest for alternative energy sources has stimulated the interest in the use of hydrogen and syngas obtained from renewable sources. Among these sources, the use of ethanol produced in Brazil from sugar cane and with a supply network already developed, and glycerol obtained as a byproduct in the biodiesel production have been highlighted in the last years.Hydrogen and syngas can be produced from steam reforming of ethanol and glycerol reactions (SRE and SRG), leading to a growing interest in the development of efficient catalysts for the production of H 2 and syngas from these alcohols.In the present thesis, catalysts of nickel supported on Ce x Zr 1-x O 2 solid solution were studied, with the goal of evaluating the performance of those in the SRE and SRG reactions.The supports were prepared by Pechini method and the catalysts were synthesized by impregnation and polymerization method in one step, with nickel loads of 5 wt.%, 10 wt.% and 15 wt.%. On the catalyst with better catalytic performance, it was impregnated 1wt% of Rh, Ru, Pt or Au as promoter.Supports and catalysts were characterized by X-ray diffraction (XRD), Raman spectroscopy, temperature-programmed reduction (TPR), oxygen storage capacity (OSC), N 2 physisorption (B.E.T. method), Diffuse Reflectance Infrared Spectroscopy with CO (DRIFTS -CO), X-ray absorption near edge structure (XANES -TPR H 2 ), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX) and Scanning electron microscopy (SEM).The catalytic tests of SRG were performed at 600 and 700 o C and for SRE at the tests were carried out at 400, 500 and 600 o C. The feed of water:alcohol was in the molar ratio of 3:1. DRIFTS coupled to a mass spectrometer analyzes was also carried out to identify the intermediates formed during the SRE. From the catalytic tests it was possible to observe that the support composition, metal load and preparation method influenced the selectivity to gaseous products, probably due to structural changes caused, mainly in the dispersion of the active phase on the support. Also, it was observed that the addition of noble metals favored a lower carbon deposition on the catalysts.

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Glycerol liquid phase conversion over monometallic and bimetallic catalysts: Effect of metal, support type and reaction temperatures

Cited by 27 publications

References 63 publications

Deactivation of solid catalysts in liquid media: the case of leaching of active sites in biomass conversion reactions

Deactivation of solid catalysts in liquid media: the case of leaching of active sites in biomass conversion reactions

Navigating Glycerol Conversion Roadmap and Heterogeneous Catalyst Selection Aided by Density Functional Theory: A Review

Desenvolvimento de catalisadores de Ni/CeO2-ZrO2 com adição de promotores para produção de hidrogênio e/ou gás de síntese a partir da reação de reforma a vapor de álcoois

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