The hydrodechlorination (HDCl) process of decachlorobiphenyl (the most chlorinated among polychlorinated biphenyls (PCBs)) promoted by a presulphided NiMo/γ-Al2O3 catalyst has been studied. The experimental runs were carried out in a stirred batch reactor at constant temperature and pressure using hexadecane as reaction medium. Temperature levels T=250 and 300 °C at hydrogen pressure PH2=20 bar were tested. The kinetic analysis of both the overall hydrodechlorination process (organic chlorine→inorganic chlorine) and of the partial network (decachlorobiphenyl→nonachlorobiphenyls→products) was performed and the corresponding kinetic constants have been evaluated. The HDCl process was completed in about 240 min at T=250 °C and in <60 min at T=300 °C.
Catalytic hydrodechlorination of decachlorobiphenyl / Murena, Fabio; Gioia, F.. - In: APPLIED CATALYSIS. B, ENVIRONMENTAL. - ISSN 1873-3883. - 38:(2002), pp. 39-50. [10.1016/S0926-3373(02)00025-5]
Catalytic hydrodechlorination of decachlorobiphenyl
MURENA, FABIO
;GIOIA F.
2002
Abstract
The hydrodechlorination (HDCl) process of decachlorobiphenyl (the most chlorinated among polychlorinated biphenyls (PCBs)) promoted by a presulphided NiMo/γ-Al2O3 catalyst has been studied. The experimental runs were carried out in a stirred batch reactor at constant temperature and pressure using hexadecane as reaction medium. Temperature levels T=250 and 300 °C at hydrogen pressure PH2=20 bar were tested. The kinetic analysis of both the overall hydrodechlorination process (organic chlorine→inorganic chlorine) and of the partial network (decachlorobiphenyl→nonachlorobiphenyls→products) was performed and the corresponding kinetic constants have been evaluated. The HDCl process was completed in about 240 min at T=250 °C and in <60 min at T=300 °C.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.