Journal Article
Adsorption of 1,2-Dichlorobenzene on a Carbon Nanomaterial Prepared by Decomposition of 1,2-Dichloroethane on Nickel Alloys
Bauman, Yu; Netskina, O; Mukha, SA; Mishakov, I; Shubin, Yu; Stoyanovskii, VO; Nalivaiko, AYu; Vedyagin, AA; Gromov, AA; ,
Russian Journal of Applied Chemistry
ISSN: 1070-4272
EISSN: 1608-3296
PLEIADES PUBLISHING INC
Concept of complex processing of chlorinated hydrocarbons, involving catalytic decomposition of 1,2-dichloroethane on Ni-M alloys to obtain a carbon nanomaterial (CNM) showing high performance in adsorption treatment of water to remove 1,2-dichlorobenzene, was presented. A series of finely dispersed Ni-Pd (5 wt %) and Ni-Mo (5 wt %) alloys were synthesized and studied. The samples were studied as catalysts in decomposition of C2H4Cl2 vapor at 600 degrees C to obtain a carbon nanomaterial. The addition of 5 wt % second metal leads to an increase in the yield of the carbon nanomaterial from 20.1 to 25.4 (Ni-Pd) and 31.8 g(CNM) g(cat)(-1) (Ni-Mo). Analysis by electron microscopy and Raman spectroscopy shows that the carbon product consists of nanofibers of segmented structure, constituted by a poorly ordered graphite phase. The specific surface area of the carbon nanomaterial is 230-280 m(2) g(-1). The CNM/Ni, CNM/Ni-Pd, and CNM/Ni-Mo samples obtained were tested as adsorbents for water treatment to remove dissolved 1,2-dichlorobenzene (c(0) = 73-880 mu M) in the batch mode. The 1,2-dichlorobenzene adsorption isotherms were constructed. The degree of filling of the carbon nanomaterial surface with the adsorbate at equilibrium is 43-47%, exceeding by a factor of more than 2 the utilization efficiency of AG-2000 activated carbon (S-BET = 1230 m(2) g(-1)).
Chemistry; carbon erosion, carbon nanofibers, nickel alloys, chlorinated organic; compounds, 1, 2-dichloroethane, catalytic decomposition, 1,; 2-dichlorobenzene, adsorption, adsorption capacity, utilization of; chlorinated hydrocarbons, water treatment