Degradación oxidativa asistida por microondas de lignina con peróxido de hidrógeno y sus propiedades tensoactivas

Miguel Infante, Fredy Ysambertt, María Hernández, Betsy Martínez, Nacarid Delgado, Bélgica Bravo, Ana Cáceres, Gerson Chávez, Johnny Bullón

Resultado de la investigación: Article

3 Citas (Scopus)

Resumen

In this work the fractions obtained by microwave-assisted oxidative degradation with hydrogen peroxide of two pine lignins (LAA y LKM) and its tensoactive properties were studied. The reactions were carried out using different quantities of the oxidant agent in a domestic microwave oven in closed reactors. The reaction was completed quickly with the generation of water as by-product. The oxidation products were characterized by UV and FTIR spectroscopy. When comparing them with the original lignin samples in UV analysis, the absorption decreased near the 280nmdue to the oxidation of the aromatic rings. In the analysis by FTIR the signals corresponding to the groups C=O increased among 1,700- 1,720 cm-1 and 1,650-1,700 cm-1 attributed to the oxidation of the lateral chains and aromatic rings, respectively. This results were evidenced because of the aromatic signal C=C around the 1,600 cm-1 decreased. It was proven the efficiency and versatility of the radiation microwaves to carry out this type of reactions. The surface tension of the oxidized lignin increased due the new hydrophilic groups.

Idioma originalSpanish
PublicaciónRevista Tecnica de la Facultad de Ingenieria Universidad del Zulia
Volumen30
N.ºSPEC. ISSUE
EstadoPublished - 1 nov 2007

Huella dactilar

Lignin
Hydrogen peroxide
Microwaves
Degradation
Oxidation
Microwave ovens
Oxidants
Byproducts
Surface tension
Spectroscopy
Water

ASJC Scopus subject areas

  • Engineering(all)

Citar esto

Infante, Miguel ; Ysambertt, Fredy ; Hernández, María ; Martínez, Betsy ; Delgado, Nacarid ; Bravo, Bélgica ; Cáceres, Ana ; Chávez, Gerson ; Bullón, Johnny. / Degradación oxidativa asistida por microondas de lignina con peróxido de hidrógeno y sus propiedades tensoactivas. En: Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia. 2007 ; Vol. 30, N.º SPEC. ISSUE.
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abstract = "In this work the fractions obtained by microwave-assisted oxidative degradation with hydrogen peroxide of two pine lignins (LAA y LKM) and its tensoactive properties were studied. The reactions were carried out using different quantities of the oxidant agent in a domestic microwave oven in closed reactors. The reaction was completed quickly with the generation of water as by-product. The oxidation products were characterized by UV and FTIR spectroscopy. When comparing them with the original lignin samples in UV analysis, the absorption decreased near the 280nmdue to the oxidation of the aromatic rings. In the analysis by FTIR the signals corresponding to the groups C=O increased among 1,700- 1,720 cm-1 and 1,650-1,700 cm-1 attributed to the oxidation of the lateral chains and aromatic rings, respectively. This results were evidenced because of the aromatic signal C=C around the 1,600 cm-1 decreased. It was proven the efficiency and versatility of the radiation microwaves to carry out this type of reactions. The surface tension of the oxidized lignin increased due the new hydrophilic groups.",
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Infante, M, Ysambertt, F, Hernández, M, Martínez, B, Delgado, N, Bravo, B, Cáceres, A, Chávez, G & Bullón, J 2007, 'Degradación oxidativa asistida por microondas de lignina con peróxido de hidrógeno y sus propiedades tensoactivas', Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia, vol. 30, n.º SPEC. ISSUE.

Degradación oxidativa asistida por microondas de lignina con peróxido de hidrógeno y sus propiedades tensoactivas. / Infante, Miguel; Ysambertt, Fredy; Hernández, María; Martínez, Betsy; Delgado, Nacarid; Bravo, Bélgica; Cáceres, Ana; Chávez, Gerson; Bullón, Johnny.

En: Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia, Vol. 30, N.º SPEC. ISSUE, 01.11.2007.

Resultado de la investigación: Article

TY - JOUR

T1 - Degradación oxidativa asistida por microondas de lignina con peróxido de hidrógeno y sus propiedades tensoactivas

AU - Infante, Miguel

AU - Ysambertt, Fredy

AU - Hernández, María

AU - Martínez, Betsy

AU - Delgado, Nacarid

AU - Bravo, Bélgica

AU - Cáceres, Ana

AU - Chávez, Gerson

AU - Bullón, Johnny

PY - 2007/11/1

Y1 - 2007/11/1

N2 - In this work the fractions obtained by microwave-assisted oxidative degradation with hydrogen peroxide of two pine lignins (LAA y LKM) and its tensoactive properties were studied. The reactions were carried out using different quantities of the oxidant agent in a domestic microwave oven in closed reactors. The reaction was completed quickly with the generation of water as by-product. The oxidation products were characterized by UV and FTIR spectroscopy. When comparing them with the original lignin samples in UV analysis, the absorption decreased near the 280nmdue to the oxidation of the aromatic rings. In the analysis by FTIR the signals corresponding to the groups C=O increased among 1,700- 1,720 cm-1 and 1,650-1,700 cm-1 attributed to the oxidation of the lateral chains and aromatic rings, respectively. This results were evidenced because of the aromatic signal C=C around the 1,600 cm-1 decreased. It was proven the efficiency and versatility of the radiation microwaves to carry out this type of reactions. The surface tension of the oxidized lignin increased due the new hydrophilic groups.

AB - In this work the fractions obtained by microwave-assisted oxidative degradation with hydrogen peroxide of two pine lignins (LAA y LKM) and its tensoactive properties were studied. The reactions were carried out using different quantities of the oxidant agent in a domestic microwave oven in closed reactors. The reaction was completed quickly with the generation of water as by-product. The oxidation products were characterized by UV and FTIR spectroscopy. When comparing them with the original lignin samples in UV analysis, the absorption decreased near the 280nmdue to the oxidation of the aromatic rings. In the analysis by FTIR the signals corresponding to the groups C=O increased among 1,700- 1,720 cm-1 and 1,650-1,700 cm-1 attributed to the oxidation of the lateral chains and aromatic rings, respectively. This results were evidenced because of the aromatic signal C=C around the 1,600 cm-1 decreased. It was proven the efficiency and versatility of the radiation microwaves to carry out this type of reactions. The surface tension of the oxidized lignin increased due the new hydrophilic groups.

KW - Hydrogen peroxide

KW - Lignin

KW - Microwave

KW - Oxidative degradation

KW - Surface tension

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M3 - Article

AN - SCOPUS:80052593857

VL - 30

JO - Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia

JF - Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia

SN - 0254-0770

IS - SPEC. ISSUE

ER -