Open AccessCatalytic Hydrodechlorination of 2,4-Dichlorophenol Using Co-Current Down Flow Contactor Reactor
Author(s) -
Asim Ur Rehman,
Muhammad Nawaz,
Arshad Chughtai,
Muhammad Arif Butt,
Abdul Sattar
Publication year - 2015
Publication title -
pakistan journal of scientific and industrial research. series a: physical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 4
eISSN - 2223-2559
pISSN - 2221-6413
DOI - 10.52763/pjsir.phys.sci.58.1.2015.1.7
Subject(s) - 2,4 dichlorophenol , catalysis , cyclohexanone , chemistry , phenol , activation energy , contactor , nuclear chemistry , inorganic chemistry , organic chemistry , power (physics) , genetics , physics , quantum mechanics , bacteria , biology
In this study, a new prospective regarding application of gas liquid reactions in the presence of catalyst was studied for pollution abatement in the novel reactor. Catalytic hydrodechlorination (CHDC)of 2,4-dichlorophenol (2,4-DCP) in aqueous system was carried out under the operating conditions at 25- 75 °C, 1 atm in co-current down flow contactor reactor. Under these reaction conditions complete conversion of 2,4-DCP into less toxic products (phenol and cyclohexanone) was achieved using 5% Pd/C catalyst. At typical temperature the hydrodechlorination reaction of 2,4-DCP was completed after 10 min. 2,4-DCP was converted to 96.19% of phenol and 3.81% of cyclohexanone using 0.4 g/L of 5% Pd/C catalyst. The increase in initial concentration of 2,4-DCP resulted in the increase in time for the dechlorination of 2,4- DCP. The calculated activation energy values amounted to 43 KJ/mol for the CHDC of 2,4-DCP exhibiting that this reaction occurs mainly under the surface reaction rate controlled condition.