TY - JOUR
T1 - Decomposition of gaseous terephthalic acid in the presence of CaO
AU - Kumagai, Shogo
AU - Grause, Guido
AU - Kameda, Tomohito
AU - Takano, Tatsuo
AU - Horiuchi, Hideki
AU - Yoshioka, Toshiaki
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/2/16
Y1 - 2011/2/16
N2 - The decomposition of PET during thermal treatment of municipal waste results in the formation of sublimating substances such as terephthalic acid (TPA) and benzoic acid, causing blockage and corrosion of pipes in the treatment facilities. To prevent these effects, TPA can be decarboxylated in the presence of calcium oxide (CaO) to obtain benzene as the main product. However, high concentrations of TPA cause the formation of large char fractions, reducing the yield of desired products. In this investigation, TPA was decarboxylated using a fixed-bed reactor filled with CaO. To increase the yield of benzene and reduce the carbonaceous residue, the effects of pyrolysis temperature and TPA feed rate were investigated. The best results were achieved at 500 °C and a TPA feed rate of 51 mg L1, yielding 67% benzene with a purity of 99.2% and a carbonaceous residue containing 18% of the initial carbon.
AB - The decomposition of PET during thermal treatment of municipal waste results in the formation of sublimating substances such as terephthalic acid (TPA) and benzoic acid, causing blockage and corrosion of pipes in the treatment facilities. To prevent these effects, TPA can be decarboxylated in the presence of calcium oxide (CaO) to obtain benzene as the main product. However, high concentrations of TPA cause the formation of large char fractions, reducing the yield of desired products. In this investigation, TPA was decarboxylated using a fixed-bed reactor filled with CaO. To increase the yield of benzene and reduce the carbonaceous residue, the effects of pyrolysis temperature and TPA feed rate were investigated. The best results were achieved at 500 °C and a TPA feed rate of 51 mg L1, yielding 67% benzene with a purity of 99.2% and a carbonaceous residue containing 18% of the initial carbon.
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U2 - 10.1021/ie101457k
DO - 10.1021/ie101457k
M3 - Article
AN - SCOPUS:79951479469
VL - 50
SP - 1831
EP - 1836
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
SN - 0888-5885
IS - 4
ER -
