Hydrogen-free deoxygenation of industrial vegetable oil waste using Ce, Zr-NiAl catalysts for second-generation biofuels production

Arias, Santiago; Vascocelos, Danilo Pontes; Libório, Denisson de Oliveira; González, Juan Felipe; Câmara, Alan Gomes da; Barbosa, C. M. B. M.; Fréty, R.; Pacheco, José Geraldo A.

doi:10.1016/j.mcat.2022.112554

Cited by 5 publications

(10 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where a and b are the compensation coefficients obtained, respectively, by the angular and linear coefficients of the straight line described in Equation (9).…”

Section: Energy Cane Bagassementioning

confidence: 99%

“…Pyrolysis is an efficient route for the thermochemical conversion of waste; it occurs at temperatures from 450 to 650 • C under an inert atmosphere [6,7]. There are several types of biomasses that can be harnessed on a large scale for second-generation biofuels via pyrolysis, such as waste vegetable oils [8,9], waste animal fat [10], brewer's spent grain [11], cattle manure [12], microalgae [13], nut residues [14], off-spec biodiesel [15] and grease traps [16]. The pyrolysis process of lignocellulosic biomass produces bio-gas, bio-oil and bio-char [17,18].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products

Liborio,

Gonzalez,

Arias

et al. 2023

Energies

Self Cite

View full text Add to dashboard Cite

Energy cane is a genotype derived from species of sugarcane (Saccharum officinarum and Saccharum spontaneum) with a lower sucrose content and higher fiber content for bioenergy purposes. It is a rustic plant that demands less fertile soils that do not compete with food crops. In this work, an analysis of energy cane bagasse pyrolysis products was performed, assessing the effect of reaction temperature and kinetic and thermodynamic parameters. Anhydrosugars, such as D-allose, were the primary compounds derived from the decomposition of energy cane at 500 °C. Methyl vinyl ketone and acetic acid were favored at 550 and 600 °C. At 650 °C, methyl glyoxal, acetaldehyde and hydrocarbons were favored. Among the hydrocarbons observed, butane, toluene and olefins such as 1-decene, 1-undecene, 1-tridecene and 1-tetradecene were the most produced. The Friedman isoconversional method was able to determine the average activation energies in the ranges 113.7−149.4, 119.9−168.0, 149.3−196.4 and 170.1−2913.9 kJ mol−1 for the decomposition of, respectively, pseudo-extractives, pseudo-hemicellulose, pseudo-cellulose and pseudo-lignin. The thermodynamic parameters of activation were determined within the ranges of 131.0 to 507.6 kJ mol−1 for ΔH, 153.7 to 215.2 kJ mol−1 for ΔG and −35.5 to 508.8 J mol−1 K−1 for ΔS. This study is very encouraging for the cultivation and use of high-fiber-content energy cane bagasse, after sucrose extraction, to produce biofuels as an alternative to the current method of conversion into electricity by low-efficiency burning.

show abstract

“…where a and b are the compensation coefficients obtained, respectively, by the angular and linear coefficients of the straight line described in Equation (9).…”

Section: Energy Cane Bagassementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products

Liborio,

Gonzalez,

Arias

et al. 2023

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although sensitive to the synthesis method, LDH generally produces oxides with high surface area [ 24 , 25 ] that are active for many types of reactions [ 26 , 27 ]. Another advantage of Mg and Fe is their biocompatibility with living organisms since these elements are endogenously present in the human body.…”

Section: Introductionmentioning

confidence: 99%

Chemical Recycling of PET Using Catalysts from Layered Double Hydroxides: Effect of Synthesis Method and Mg-Fe Biocompatible Metals

Arcanjo,

Liborio,

Arias

et al. 2023

Polymers

Self Cite

View full text Add to dashboard Cite

The chemical recycling of poly(ethylene terephthalate) (PET) residues was performed via glycolysis with ethylene glycol (EG) over Mg-Fe and Mg-Al oxide catalysts derived from layered double hydroxides. Catalysts prepared using the high supersaturation method (h.s.c.) presented a higher surface area and larger particles, but this represented less PET conversion than those prepared by the low supersaturation method (l.s.c.). This difference was attributed to the smaller mass transfer limitations inside the (l.s.c.) catalysts. An artificial neural network model well fitted the PET conversion and bis(2-hydroxyethyl) terephthalate (BHET) yield. The influence of Fe in place of Al resulted in a higher PET conversion of the Mg-Fe-h.s.c. catalyst (~95.8%) than of Mg-Al-h.s.c. (~63%). Mg-Fe catalysts could be reused four to five times with final conversions of up to 97% with reaction conditions of EG: PET = 5:1 and catalyst: PET = 0.5%. These results confirm the Mg-Fe oxides as a biocompatible novel catalyst for the chemical recycling of PET residues to obtain non-toxic BHET for further polymerization, and use in food and beverage packaging.

show abstract

“…At the forefront, the types of hydrogen dissociation, namely homolytic dissociation and heterolytic dissociation, play a crucial role in the reactivity for the hydrogenation of polar functional groups containing CO, CS, and CN bonds. − In particular, heterolytically dissociated H δ+ species display superior activity for the hydrogenation of polar unsaturated groups since polar bonds are ideal acceptors for hydride pairs and protons . Of note, the metal–support interface, as one of the advanced catalysts with Frustrated Lewis acid–base pairs (FLPs), is demonstrated to enable the heterolytic dissociation of H 2 into hydrides (H δ‑ ) and protons (H δ+ ) due to its unique chemical environment caused by the interfacial metal atoms anchored on the surface atoms of the support such as O, N, P, or S. − However, the limited interfacial sites caused by poor contact between metals and oxide support inhibit the heterolytic dissociation of H 2 and substrate activation. − In addition, both the homolytic and heterolytic dissociations of H 2 occur on the metal–metal pairs and the metal-oxide interfacial sites, respectively, promoting the hydrogenation reaction . Therefore, identifying and enhancing the interfacial contribution to the heterolytic dissociation of H 2 and substrate activation are still grand challenges for supported metal nanoparticle catalysts.…”

Section: Introductionmentioning

confidence: 99%

Intensifying Hydrogen Heterocracking via Regulating the ZnO Overlayer for Enhanced Fatty Acid Ester Hydrogenation

Liu,

Zhang,

Yang

et al. 2023

ACS Catal.

View full text Add to dashboard Cite

Hydrogen-free deoxygenation of industrial vegetable oil waste using Ce, Zr-NiAl catalysts for second-generation biofuels production

Cited by 5 publications

References 45 publications

Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products

Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products

Chemical Recycling of PET Using Catalysts from Layered Double Hydroxides: Effect of Synthesis Method and Mg-Fe Biocompatible Metals

Intensifying Hydrogen Heterocracking via Regulating the ZnO Overlayer for Enhanced Fatty Acid Ester Hydrogenation

Contact Info

Product

Resources

About