Bugli, Federico
(2019)
Valorizzazione di idrolizzati da cellulosa tramite catalisi eterogenea.
[Laurea magistrale], Università di Bologna, Corso di Studio in
Chimica industriale [LM-DM270], Documento ad accesso riservato.
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Abstract
The aim of the work is the valorization of lignocellulosic wastes, coming from paper industries, using heterogeneous catalysts to obtain more valuable products like fuels or hydrogen. Two steams with different compositions were producted by the depolymerization of cellulose in acidic conditions; the first was mostly made of glucose while the second one was composed of a stoichiometric 1:1 mixture of formic acid and levulinic acid. Another target of this project was to avoid noble metals from the catalytic system and develop an economic and robust catalyst. Cobalt catalysts for the APR of glucose and Ni catalyst for the valorization of the levulinic and formic mixture were chosen. Co was tested at different conditions and with different metals for test a beneficial effect of a bimetallic system for the aim of optimize the APR of glucose and the production of hydrogen. On the other hand the nickel catalyst was synthetized starting from an hydrotalcite that was then calcined and reduced in hydrogen flux in the way of obtain the active phase Ni0. This one was used for hydrogenate levulinc acid without external hydrogen, using just formic acid as hydrogen source, to produce GVL, a valuable green product used as fuel, solvent or monomer.
Abstract
The aim of the work is the valorization of lignocellulosic wastes, coming from paper industries, using heterogeneous catalysts to obtain more valuable products like fuels or hydrogen. Two steams with different compositions were producted by the depolymerization of cellulose in acidic conditions; the first was mostly made of glucose while the second one was composed of a stoichiometric 1:1 mixture of formic acid and levulinic acid. Another target of this project was to avoid noble metals from the catalytic system and develop an economic and robust catalyst. Cobalt catalysts for the APR of glucose and Ni catalyst for the valorization of the levulinic and formic mixture were chosen. Co was tested at different conditions and with different metals for test a beneficial effect of a bimetallic system for the aim of optimize the APR of glucose and the production of hydrogen. On the other hand the nickel catalyst was synthetized starting from an hydrotalcite that was then calcined and reduced in hydrogen flux in the way of obtain the active phase Ni0. This one was used for hydrogenate levulinc acid without external hydrogen, using just formic acid as hydrogen source, to produce GVL, a valuable green product used as fuel, solvent or monomer.
Tipologia del documento
Tesi di laurea
(Laurea magistrale)
Autore della tesi
Bugli, Federico
Relatore della tesi
Correlatore della tesi
Scuola
Corso di studio
Indirizzo
CHIMICA INDUSTRIALE
Ordinamento Cds
DM270
Parole chiave
APR acido levulinico GVL glucosio Ni/MgOAl2O3 CoMo CoMn
Data di discussione della Tesi
22 Marzo 2019
URI
Altri metadati
Tipologia del documento
Tesi di laurea
(NON SPECIFICATO)
Autore della tesi
Bugli, Federico
Relatore della tesi
Correlatore della tesi
Scuola
Corso di studio
Indirizzo
CHIMICA INDUSTRIALE
Ordinamento Cds
DM270
Parole chiave
APR acido levulinico GVL glucosio Ni/MgOAl2O3 CoMo CoMn
Data di discussione della Tesi
22 Marzo 2019
URI
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