A. Muto

Vapour phase catalytic hydrodechlorination of chlorobenzene over Ni–carbon composite catalysts

Abstract Ni–carbon composite catalysts were prepared by a modified carbothermal reduction method using ion exchange resins. The catalysts were characterised by N2 adsorption, X-ray diffraction and transmission electron microscope. The catalysts activities and selectivities were studied in the hydrodechlorination of chlorobenzene. The catalyst activities depend upon the carbothermal reduction temperature during preparation. These catalysts are found to be more stable and selective in this reaction even in the presence of HCl which is produced during the reaction.

Removal of organic chlorine compounds by catalytic dehydrochlorination for the refinement of municipal waste plastic-derived oil

Municipal waste plastic derived oil was prepared by thermal degradation of municipal waste plastics at 410°C. During the degradation of these waste plastics containing polyvinyl chloride, organic chlorine compounds were produced in the oil. The chloroorganic compounds were dehydrochlorinated by using various catalysts such as iron oxide, iron oxide–carbon composite, ZnO, MgO and Redmud. The catalysts were characterized by N2 adsorption and X-ray diffraction. The iron oxide catalysts were effective in removing the chloroorganic compounds. MgO and ZnO catalysts were deactivated during the reaction by HCl, which is produced by the dehydrochlorination of chloroorganic compounds. Iron oxide and its carbon composite were found to be stable in the dehydrochlorination of municipal waste plastic derived oil.

Catalytic dechlorination of chloroorganic compounds from PVC-containing mixed plastic-derived oil

Abstract The dechlorination of chloroorganic compounds from PVC-containing mixed plastic-derived oil was studied over iron oxide and iron oxide-carbon composite catalysts. The catalysts are characterised by nitrogen adsorption and X-ray diffraction. The catalysts are deactivated initially due to the adsorption of HCl gas that is produced during the reaction. Continuous adsorption of HCl on iron oxide leads to the conversion of iron oxide to iron chloride. The catalysts’ deactivation was overcome by removing the reversible adsorbed HCl gas continuously, using He as a carrier gas.

Preparation of porous carbon membrane plates for pervaporation separation applications

Abstract Porous carbon membrane plates (PCMPs) for pervaporation applications were prepared by carbonizing phenol resin powder. The plates formed were found to be effective in separating benzene from azeotropic benzene–cyclohexane mixtures. The plates were stable in concentrated acid solution and maintained their good separation properties.

Catalytic dehydrochlorination of chloro-organic compounds from PVC containing waste plastics derived fuel oil over FeCl2/SiO2 catalyst

A highly selective and stable FeCl2/SiO2 catalyst system was studied for the dehydrochlorination of various chloro-organic compounds from the fuel oil derived from polyvinyl chloride (PVC) containing waste plastics.

Hydrodechlorination of chlorinated hydrocarbons over metal–carbon composite catalysts prepared by a modified carbothermal reduction method

A highly stable and active Pd–Fe carbon composite catalyst system for hydrodechlorination of chlrohydrocarbons is obtained by a novel modified carbothermal reduction method using ion exchange resins.