Decomposition of hexachlorobenzene over Al2O3 supported metal oxide catalysts

Physiochemical technologies for HCB remediation and disposal: A review

“…Since the catalytic effect of copper oxide in municipal solid waste incinerators (MSWI) fly ash on thermal destruction of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) was discovered [97], the effect of metal oxides and salts on HCB dechlorination at low temperatures (300-400 • C) was initiated [98][99][100][101][102][103][104][105]. High dechlorination efficiency was reached using CaO, CaSiO 3 and treated fly ash, and the dependence of dechlorination potential on the support characteristic rather than the transition metal content was evidence [100].…”

“…The performance of HCB dechlorination by Ca-Fe oxide composite was much higher than by the individual oxide, which was interpreted as a synergic effect based on the basic Ca-O-Fe mixtured structure, in which Ca was the adsorption center and Fe was the catalysis center [102]. As high as 94.2% dechlorination efficiency of HCB in solid phase could be reached in the presence of ␥-alumina at 300 • C for 60 min treatment [103], and supporting metal oxides (MgO, CaO, BaO, La 2 O 3 , CeO 2 , MnO 2 , Fe 2 O 3 and Co 3 O 4 ) further increased the reactivity [104].…”

Degradation of one-side fully-chlorinated 1,2,3,4-tetrachloronaphthalene over Fe–Al composite oxides and its hypothesized reaction mechanism

“…These materials are multifunctional, allowing them to reach levels of reactivity that single metal oxides would be unable to achieve. [18][19][20] Several studies have reported that multicomponent materials exhibit high levels of activity toward the degradation of chlorinated aromatics. Yu et al reported the development of a VO x /TiO 2 catalyst that exhibited high degradation efficiency towards the decomposition of PCDD/Fs.…”

Synthesis, characterization, scale-up and catalytic behaviour of Co3O4 nanoparticles

“…2 Our interest is being in the search of an efficient catalyst for redox reactions. In the group of transition metal oxides, the nanostructured cobalt oxide (Co 3 O 4 ) spinels are of special interest due to their relatively low cost, high thermal stability, ease of preparation of high surface area [3][4][5][6][7][8][9][10][11][12][13] and many applications in different areas such as catalysts, [14][15][16] sensors [17][18][19] and batteries. [20][21][22] A range of different morphologies had been used to synthesize Co 3 O 4 including nanospheres, nanocubes, nanofibres and mesoporous structures.…”