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Article Dans Une Revue Applied Catalysis A : General Année : 2015

From industrial black liquor to pure phenolic compounds: A combination of catalytic conversion with ionic liquids extraction

Résumé

The conversion, in a sustainable way, of paper industry wastes such as black liquor into value-added mols. is still challenging. Herein, a direct catalytic conversion of black liquor into an aq. soln. has been achieved at moderate temp. and pressure (<250 °C, 2 MPa). For this purpose, a multimetallic catalyst (Pd0.5/Ni1Cu1-Mg30AlOx) has been synthesized and fully characterized. In presence of this material, a carbon-based conversion of 12 wt.% has been obtained. The final liq. is composed of value-added phenolic compds. (i.e., guaiacol, creosol...) and the reaction can be afforded up to five cycles without deactivation. The green chem. concept consists of extg. these compds. without the use of volatile solvent and in safe operating conditions. For these reasons, the use of hydrophobic ionic liqs. for the liq.-liq. extn. of these phenols has been investigated. The influences of the side chains of sym. and asym. imidazolium-NTf2 as well as operational conditions (stirring rate and temp.) have been studied. As a result, [C1C6Im][NTf2] has been found to be efficient in one-step total extn. phenolic components contained in the soln. issued from the catalytic conversion of black liquor. This study showed that the catalytic hydropyrolysis of black liquor could be considered as an alternative source of phenolic compds. to conventional fossil resources. [on SciFinder(R)]

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Chimie
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Dates et versions

hal-02087080 , version 1 (01-04-2019)

Identifiants

  • HAL Id : hal-02087080 , version 1

Citer

Anthony Garron, Philippe P. Arquilliere, Walid Al Maksoud, Cherif Larabi, Jean-Jacques Walter, et al.. From industrial black liquor to pure phenolic compounds: A combination of catalytic conversion with ionic liquids extraction. Applied Catalysis A : General, 2015, 502, pp.230-238. ⟨hal-02087080⟩
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