Separation of C6-olefin isomers in reactive extractants

Pillar[3]trianglamines: deeper cavity triangular macrocycles for selective hexene isomer separation

“…[4][5][6][7][8][9] Current practices depend on extraction and reactive extractive distillation, which are energy intensive and operationally complex. 3,[10][11][12] Furthermore, the separation of these olens can be very problematic due to the tendency of their highly reactive double bonds to undergo thermally induced polymerizations at elevated temperatures. 13 An interesting alternative is adsorptive separation using porous materials such as zeolites, metalorganic frameworks (MOFs) and organic porous materials.…”

Technical and economic evaluation Separation of the separation of light olefins (Ethylene and Propylene) by using π-complexationwith silver salts

“…According to the above, the theory of π-complexation explains the chemical affinity of the silver ion to light olefinic compounds such as ethylene, propylene and butylenes, and its selectivity to separate them from paraffinic compounds. Moreover, other potential applications of chemical complexation with Ag + such as separation of aromatic from aliphatic compounds (Bryant, Noble & Koval, 1997;Chakraborty & Bart, 2007;Kao, Wang & Lue, 2002;Teramoto, Matsuyama & Yonehara, 1990) and α-olefins from internal olefins, have been reported (Song, Yu & Cheng, 2008;Bessarabow et al, 1999). (Song et al, 2008) The selectivity of a silver salt (AgX) depends on its lattice energy (Ortiz et al, 2008), which is an estimation of the strength of the bonds between the ions in the salt.…”

“…Moreover, other potential applications of chemical complexation with Ag + such as separation of aromatic from aliphatic compounds (Bryant, Noble & Koval, 1997;Chakraborty & Bart, 2007;Kao, Wang & Lue, 2002;Teramoto, Matsuyama & Yonehara, 1990) and α-olefins from internal olefins, have been reported (Song, Yu & Cheng, 2008;Bessarabow et al, 1999). (Song et al, 2008) The selectivity of a silver salt (AgX) depends on its lattice energy (Ortiz et al, 2008), which is an estimation of the strength of the bonds between the ions in the salt. In the case of most commonly studied silver salts, AgBF 4 has the lowest lattice energy and exhibits higher selectivity than AgNO 3 (Azhin, Kaghazchi & Rahmani, 2008;Ortiz et al, 2008).…”

Propylene/propane separation using N-methyl pyrrolidone/AgNO 3 supported liquid membrane

“…The low volatility (p sat = 6.6 × 10 −4 kPa at 25°C) and also ability in separating saturated hydrocarbons from unsaturated ones are the main attractive characteristics of this solvent [35]. In some studies, the solubility of olefins was examined in NMP and in metal salt solutions thereof [36,37]. The aforementioned studies were focused on the absorption ability of the solvent.…”