Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F14%3A00427874" target="_blank" >RIV/61388955:_____/14:00427874 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cattod.2013.10.015" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2013.10.015</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2013.10.015" target="_blank" >10.1016/j.cattod.2013.10.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites

Popis výsledku v původním jazyce

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-bedflow 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 largecavities. 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 theselectivity 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 L

Název v anglickém jazyce

Selective synthesis of linear alkylbenzene by alkylation of benzene with 1-dodecene over desilicated zeolites

Popis výsledku anglicky

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-bedflow 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 largecavities. 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 theselectivity 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 L

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GBP106%2F12%2FG015" target="_blank" >GBP106/12/G015: Vývoj nových nanoporézních adsorbentů a katalyzátorů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

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Svazek periodika

227

Číslo periodika v rámci svazku

MAY 2014

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

187-197

Kód UT WoS článku

000332412900026

EID výsledku v databázi Scopus

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