title: Hydrodechlorination of dichlorobenzenes and their derivatives over Ni-Mo/C catalyst: kinetic analysis and effect of molecular structure of reactant.
abstract: The kinetics of the catalytic hydrodechlorination (HDC) process of selected dichlorobenzenes (DCBs), dichlorotoluenes (DCTs) and dichlorodiphenyls (DCDs) was studied in the presence of a sulphided carbon-supported Ni-Mo catalyst. The HDC runs were performed in a magnetic stirred batch reactor in the range of 210-230°C under the hydrogen pressure of 3MPa. The kinetic constants were evaluated and the reaction network was proposed assuming the pseudo-first order kinetics of dechlorination process. The HDC of aromatic dichloroderivatives proceeded via a network of sequential-parallel reactions. At 210°C DCBs, DCTs and DCDs followed mainly the pathway of direct transformation to respective aromatic hydrocarbon. At 230°C, the contribution of sequential dechlorination to monochloroderivative became more predominant.
authors.affiliation: Faculty of Chemistry, Wrocław University of Technology, 50-344 Wrocław, ul. Gdańska 7/9, Poland. stanislaw.gryglewicz@pwr.wroc.pl
authors.forename: Stanisław
authors.initials: S
authors.lastname: Gryglewicz
authors.forename: Wojciech
authors.initials: W
authors.lastname: Piechocki
mesh_terms: D001713:Biphenyl Compounds / Q000737:chemistry; D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D002722:Chlorobenzenes / Q000737:chemistry*; D020111:Chlorodiphenyl (54% Chlorine) / Q000737:chemistry; D054879:Halogenation; D007700:Kinetics; D015394:Molecular Structure; D008982:Molybdenum / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D014050:Toluene / Q000737:chemistry
chemical_list: D001713:Biphenyl Compounds; D002722:Chlorobenzenes; D020111:Chlorodiphenyl (54% Chlorine); D014050:Toluene; D002244:Carbon; D009532:Nickel; D008982:Molybdenum