Oligomer model to explain the coloration of TEA and discoloration catalytic treatment

Longuet C; Coq B; Durand R; Finiels A; Geneste P; Mauvezin M

Journal of Molecular Catalysis A-Chemical, Vol.234, No.1-2, 59-62, 2005

DOI10.1016/j.molcata.2005.02.016 Export Citation

Oligomer model to explain the coloration of TEA and discoloration catalytic treatment

Longuet C, Coq B, Durand R, Finiels A, Geneste P, Mauvezin M

To understand origin of the undesirable well-known coloration of triethanolamine by compounds at trace levels, a model of insaturated oligomers is proposed. The hydrogenation in the presence of various supported metal catalysts is an attractive process for TEA discoloration, and a 5 wt.% Pd/C catalyst exhibited the highest efficiency. (c) 2005 Elsevier B.V All rights reserved.

Keywords:ethanolamines;APHA color number;catalytic hydrogenation;supported metals;discoloration