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Bio Adipic Acid Production from Sodium Muconate and Muconic Acid: A Comparison of two Systems
Author(s) -
Capelli Sofia,
Motta Davide,
Evangelisti Claudio,
Dimitratos Nikolaos,
Prati Laura,
Pirola Carlo,
Villa Alberto
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201900343
Subject(s) - muconic acid , adipic acid , chemistry , catalysis , substrate (aquarium) , yield (engineering) , organic chemistry , inorganic chemistry , materials science , benzene , oceanography , metallurgy , geology
sodium muconate and trans,trans ‐muconic acid were heterogeneously hydrogenated to adipic acid, a strategic intermediate for the industry of polyamides and high performance polymers. Hydrogen pressure, metal to substrate ratio, substrate concentration and reaction temperature were varied to study the effect of these parameters on the reaction products. Commercial Pd/AC 5 % was used as catalyst and characterized by TEM, BET and XPS analyses. The results revealed that temperature is the parameter which mainly affect the reaction. Moreover, hydrogenation of trans,trans ‐muconic acid is faster than sodium muconate reduction. Full conversion and full yield toward adipic acid was obtained using trans,trans ‐muconic acid as substrate after 60 min at the following operating conditions: temperature=70 °C, metal/substrate=1/200 (mol Pd /mol sub ), trans,trans ‐muconic acid concentration=1.42E‐02M and hydrogen pressure=1 bar. In all reactions (2E)hexenedioic acid was detected as main intermediate.