This HTML5 document contains 44 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Namespace Prefixes

PrefixIRI
dctermshttp://purl.org/dc/terms/
n16http://linked.opendata.cz/resource/domain/vavai/riv/tvurce/
n15http://linked.opendata.cz/resource/domain/vavai/projekt/
n7http://linked.opendata.cz/ontology/domain/vavai/
shttp://schema.org/
skoshttp://www.w3.org/2004/02/skos/core#
n3http://linked.opendata.cz/ontology/domain/vavai/riv/
n11http://bibframe.org/vocab/
n2http://linked.opendata.cz/resource/domain/vavai/vysledek/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
n13http://linked.opendata.cz/resource/domain/vavai/vysledek/RIV%2F61388955%3A_____%2F14%3A00427874%21RIV15-GA0-61388955/
n4http://linked.opendata.cz/ontology/domain/vavai/riv/klicoveSlovo/
n17http://linked.opendata.cz/ontology/domain/vavai/riv/duvernostUdaju/
xsdhhttp://www.w3.org/2001/XMLSchema#
n12http://linked.opendata.cz/ontology/domain/vavai/riv/aktivita/
n8http://linked.opendata.cz/ontology/domain/vavai/riv/jazykVysledku/
n18http://linked.opendata.cz/ontology/domain/vavai/riv/obor/
n10http://linked.opendata.cz/ontology/domain/vavai/riv/druhVysledku/
n9http://reference.data.gov.uk/id/gregorian-year/

Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F14%3A00427874%21RIV15-GA0-61388955
rdf:type
n7:Vysledek skos:Concept
dcterms:description
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). 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).
dcterms:title
Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites
skos:prefLabel
Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites
skos:notation
RIV/61388955:_____/14:00427874!RIV15-GA0-61388955
n3:aktivita
n12:P n12:I
n3:aktivity
I, P(GBP106/12/G015)
n3:cisloPeriodika
MAY 2014
n3:dodaniDat
n9:2015
n3:domaciTvurceVysledku
n16:7016662
n3:druhVysledku
n10:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
44302
n3:idVysledku
RIV/61388955:_____/14:00427874
n3:jazykVysledku
n8:eng
n3:klicovaSlova
zeolites; benzene alkylation; long-chain olefin
n3:klicoveSlovo
n4:long-chain%20olefin n4:benzene%20alkylation n4:zeolites
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[8B3D40570EC4]
n3:nazevZdroje
Catalysis Today
n3:obor
n18:CF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
6
n3:projekt
n15:GBP106%2F12%2FG015
n3:rokUplatneniVysledku
n9:2014
n3:svazekPeriodika
227
n3:tvurceVysledku
Siddiqui, M. A. B. Čejka, Jiří Aslam, W. Al-Khattaf, S. Aitani, A. Jermy, B. R.
n3:wos
000332412900026
s:issn
0920-5861
s:numberOfPages
11
n11:doi
10.1016/j.cattod.2013.10.015