. "RIV/61388955:_____/14:00427874" . "RIV/61388955:_____/14:00427874!RIV15-GA0-61388955" . "MAY 2014" . "6"^^ . "Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites" . "The alkylation of benzene with 1-dodecene to linear alkylbenzenes (LAB) was investigated over 12-ring zeolites MOR, BEA, and FAU with varying framework topologies and Si/Alratios. The reaction was carried out under a high-pressure, 20 bar, in a fixed-bed flow reactor at 140 degrees C, using WHSV 4 h-1, benzene/1 dodecene molar ratio of 6.0 and time-on-stream of 6.0 h. In contrast to MOR and BEA zeolites, FAU exhibited the lowest selectivity (24%) to the desired 2-phenyl dodecane (2-LAB) due to its large cavities. The MOR and BEA with different Si/Alratios were further desilicated using alkali-metal treatments (0.2 M and 0.05 M NaOH) to create hierarchical porous structure. The desilication of both zeolites improved the conversion of 1-dodecene and the selectivity to 2-LAB. The excellent stability resulting from desilication is attributed to a better diffusivity of the LAB isomers, shortening of real contact time, due to the enhanced mesporous structure in both zeolites and the higher Lewis acidity. The selectivity to 2-LAB increased to 70% over desilicated MOR (Si/Al ratio = 20) compared with a selectivity of 35% over desilicated BEA (Si/Al ratio = 24)." . "zeolites; benzene alkylation; long-chain olefin"@en . "Siddiqui, M. A. B." . . . . . "\u010Cejka, Ji\u0159\u00ED" . "Aslam, W." . "Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites"@en . . "The alkylation of benzene with 1-dodecene to linear alkylbenzenes (LAB) was investigated over 12-ring zeolites MOR, BEA, and FAU with varying framework topologies and Si/Alratios. The reaction was carried out under a high-pressure, 20 bar, in a fixed-bed flow reactor at 140 degrees C, using WHSV 4 h-1, benzene/1 dodecene molar ratio of 6.0 and time-on-stream of 6.0 h. In contrast to MOR and BEA zeolites, FAU exhibited the lowest selectivity (24%) to the desired 2-phenyl dodecane (2-LAB) due to its large cavities. The MOR and BEA with different Si/Alratios were further desilicated using alkali-metal treatments (0.2 M and 0.05 M NaOH) to create hierarchical porous structure. The desilication of both zeolites improved the conversion of 1-dodecene and the selectivity to 2-LAB. The excellent stability resulting from desilication is attributed to a better diffusivity of the LAB isomers, shortening of real contact time, due to the enhanced mesporous structure in both zeolites and the higher Lewis acidity. The selectivity to 2-LAB increased to 70% over desilicated MOR (Si/Al ratio = 20) compared with a selectivity of 35% over desilicated BEA (Si/Al ratio = 24)."@en . "Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites" . "10.1016/j.cattod.2013.10.015" . "1"^^ . . . . "227" . "0920-5861" . "Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites"@en . "Al-Khattaf, S." . "000332412900026" . "[8B3D40570EC4]" . "Aitani, A." . "Jermy, B. R." . "NL - Nizozemsko" . "I, P(GBP106/12/G015)" . "11"^^ . . . . . . . . "Catalysis Today" . "44302" .