Synthesis, Characterization, and Use of Nb V /Ce IV ‐Mixed Oxides in the Direct Carboxylation of Ethanol by using Pervaporation Membranes for Water Removal | Zendy

Dibenedetto Angela | Zendy; Aresta Michele | Zendy; Angelini Antonella | Zendy; Ethiraj Jayashree | Zendy; Aresta Brunella Maria | Zendy

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Synthesis, Characterization, and Use of Nb V /Ce IV ‐Mixed Oxides in the Direct Carboxylation of Ethanol by using Pervaporation Membranes for Water Removal

Author(s) -

Dibenedetto Angela,

Aresta Michele,

Angelini Antonella,

Ethiraj Jayashree,

Aresta Brunella Maria

Publication year - 2012

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201201561

Subject(s) - pervaporation , carboxylation , catalysis , membrane , ethanol , supercritical fluid , chemistry , chemical engineering , phase (matter) , nuclear chemistry , inorganic chemistry , materials science , organic chemistry , permeation , biochemistry , engineering

New catalytic systems based on ceria have been used in the direct carboxylation of ethanol. The catalytic behavior of Al 2 O 3 and Nb 2 O 5 loaded ceria is compared, the latter showing a better performance. A morphological and structural study has been carried out on Nb 2 O 5 /CeO 2 catalysts in order to explain their behavior in catalysis. Pervaporation membranes have been used for water separation. The synthesis of diethylcarbonate (DEC) has been carried out either in a liquid phase (ethanol) pressurized with CO 2 or in supercritical conditions. A set‐up has been developed that allows the production of quite pure DEC (>90 %) with recycling of CO 2 and ethanol.

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