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Design of a Metal‐Promoted Oxide Catalyst for the Selective Synthesis of Butadiene from Ethanol
Author(s) -
Sushkevich Vitaly L.,
Ivanova Irina I.,
Ordomsky Vitaly V.,
Taarning Esben
Publication year - 2014
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201402346
Subject(s) - catalysis , 1,3 butadiene , crotonaldehyde , acetaldehyde , chemistry , dehydrogenation , selectivity , ethanol , oxide , heterogeneous catalysis , alcohol , metal , inorganic chemistry , organic chemistry
The synthesis of buta‐1,3‐diene from ethanol has been studied over metal‐containing (M=Ag, Cu, Ni) oxide catalysts (MO x =MgO, ZrO 2 , Nb 2 O 5 , TiO 2 , Al 2 O 3 ) supported on silica. Kinetic study of a wide range of ethanol conversions (2–90 %) allowed the main reaction pathways leading to butadiene and byproducts to be determined. The key reaction steps of butadiene synthesis were found to involve ethanol dehydrogenation, acetaldehyde condensation, and the reduction of crotonaldehyde with ethanol into crotyl alcohol. Catalyst design included the selection of active components for each key reaction step and merging of these components into multifunctional catalysts and adjusting the catalyst functions to achieve the highest selectivity. The best catalytic performance was achieved over the Ag/ZrO 2 /SiO 2 catalyst, which showed the highest selectivity towards butadiene (74 mol %).