Catalytic hydrodechlorination of chlorinated ethylenes in organic solvents at room temperature and atmospheric pressure

Solvent effects in the catalytic hydrotreament of haloaromatics over Pd/Al2O3 in water+organic mixtures

“…The lack of fundamental information regarding solvent effects serves to limit the effective deployment of catalytic HDH in environmental pollution control as any solvent dependency can impact on reactor sizing/design, operation and optimization. It should be noted that an apparent dependence of HDH activity/selectivity on the solvent may be masked by the occurrence of (i) secondary reactions associated with the solvent (Kopinke et al, 2004;Ukisu, 2008), (ii) catalyst deactivation (Concibido et al, 2007a;Xia et al, 2004) and (iii) mass-transfer constraints (Mackenzie et al, 2006;Nishijima et al, 2004;Xia et al, 2003). Recently, we have studied the liquid phase conversion of 2,4-dichlorophenol in various solvents over Pd/Al 2 O 3 where reaction rate showed a dependence on solvent dielectric constant (Gó mez-Quero et al, 2010).…”

Dechlorination of hexachlorobenzene using ultrafine Ca–Fe composite oxides

“…They include biodegradation [3][4][5], photocatalytic oxidation [6,7] and catalytic hydrodechlorination [8][9][10][11][12][13][14][15][16][17]. In general, chemical methods have been by far the most studied ones.…”

Competitive Reaction During Decomposition of Hexachlorobenzene Over Ultrafine Ca–Fe Composite Oxide Catalyst

“…0.1 ng of I-TEQ/Nm 3 ) have been imposed on the emissions of such compounds in many countries [2]. To meet the standards, various methods have been tried to destroy the chlorinated organics including PCDDs and PCDFs, such as biodegradation [3,4], photocatalytic oxidation [5,6] and catalytic hydrodechlorination [7][8][9][10][11][12][13][14][15][16].…”