Catalysis of alkaline-modified mordenite for benzene alkylation of diolefin-containing dodecene for linear alkylbenzene synthesis

Lin, Je-Shian; Wang, Jhao-Jyun; Wang, Jenshi; Wang, Ikai; Jermy, B. Rabindran; Aitani, Abdullah M.; Al-Khattaf, S.; Tsai, Tseng-Chang

doi:10.1016/j.jcat.2012.12.031

Cited by 39 publications

(23 citation statements)

References 55 publications

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“…Another possible reason to catalyst deactivation was the moisture in tiny quantities passing through the hydrophobic group, and contacting with active sites, leading to hydrolysis of active sites. 37,38 …”

Section: Alkylation Of Benzene With 1-dodecene 321 the Effect Of Vamentioning

confidence: 99%

Durability enhanced ionic liquid catalyst for Friedel–Crafts reaction between benzene and 1-dodecene: insight into catalyst deactivation

Wan

Zhang

et al. 2015

RSC Adv.

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Friedel-Craft alkylation of benzene with 1-dodecene, which is an important reaction of synthetic detergent, was studied using the catalyst of [bmim][TFSI]/AlCl3 (1-butyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide/AlCl3). These ionic liquid catalysts show biphasic behaviors at specific condition. Active site species and Lewis acidity were determined by NMR and acetonitrile probe FT-IR. NMR spectroscopy investigations indicated that "Coordinated" and "uncoordinated"[TFSI]existed in the ionic liquid catalyst system sumultaneity, while tetrahedral 4-coordinate Al2Cl7was the main active specie for Friedel-Craft alkylation. The complexation [AlClx(TFSI)y]tend to decompose and release 4-coordinated Al2Cl7and [TFSI] -. The phase behaviors study of the ionic liquid [bmim][TFSI]/AlCl3 demonstrated that the upper phase could be used as an efficient heterogeneous catalyst when AlCl3/IL≥1.5. Due to the presence of anion [TFSI]around active sites, especially [TFSI]at "uncoordinated" state, ionic liquid formed a stable and hydrophobic chemical environment, which enhanced catalysts durability. The influence of various reaction conditions including catalyst reusability on the alkylation reaction was studied, and the potential reasons to catalyst deactivation were discussed. The highest 2-LAB selectivity was more than 50% when 1-dodecene conversion was nearly 100%. Comparing with liquid or solid acid catalyst, ionic liquid catalysts have many advantages in perspectives concerning energy and environmental.

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Section: Alkylation Of Benzene With 1-dodecene 321 the Effect Of Vamentioning

confidence: 99%

Durability enhanced ionic liquid catalyst for Friedel–Crafts reaction between benzene and 1-dodecene: insight into catalyst deactivation

Wan

Zhang

et al. 2015

RSC Adv.

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“…This is generally achieved by either creating a secondary intracrystalline porosity in a microporous parent (top-down approach) or by reducing dramatically their crystal size during a dedicated synthesis (bottom-up approach). Among the post-synthesis approaches, the caustic treatment (mainly with NaOH) attracted a renewed attention due to its simplicity and relatively broad applicability to different types of zeolites [19][20][21][22]. It was shown, in some cases, that the resulting hierarchical zeolites exhibit enhanced diffusion and acid site accessibility.…”

Section: Introductionmentioning

confidence: 99%

On the remarkable resistance to coke formation of nanometer-sized and hierarchical MFI zeolites during ethanol to hydrocarbons transformation

Lakiss

Ngoye

Canaff

et al. 2015

Journal of Catalysis

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“…Notably, at the same reaction time, the conversion gain for the regenerated catalyst was approximately 10% higher than that of the fresh catalyst; however, after 475 min of reaction, the amount of deoxygenated and mono‐oxygenated compounds produced were similar for both catalysts. The conversion increase observed for the regenerated catalyst could be attributed to an increase in its mesoporosity resulting from the regeneration treatment, increasing guaiacol's diffusion and improving the accessibility to catalytically active sites …”

Section: Resultsmentioning

confidence: 99%

Development of Bifunctional Hydrodeoxygenation Catalyst Rh‐HY for the Generation of Biomass‐Derived High‐Energy‐Density Fuels

Fócil

Sotelo

et al. 2019

Energy Tech

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Liquid‐phase hydrodeoxygenation (HDO) of phenol, anisole, and guaiacol over rhodium‐doped, high‐silica content zeolite catalysts (Si/Al = 15), HY, is investigated in a high‐pressure‐fixed bed reactor. These catalysts are characterized by inductively coupled plasma optical emission spectrometry, scanning electron microscopy with energy‐dispersive spectroscopy, thermogravimetric analysis, X‐ray diffraction, N2 physisorption, ammonia temperature‐programmed desorption, temperature‐programmed oxidation, temperature‐programmed reduction, 27Al magic angle spinning nuclear magnetic resonance, and X‐ray photoelectron spectroscopy. The effects of reaction temperature (150–250 °C) and weight hourly space velocity (WSHV = 1.0–2.8 h−1) on activity, stability, and product distribution are investigated. The main products obtained from HDO reactions are methylcyclopentane, cyclohexane, methylcyclohexane, and bicyclohexyl. Cyclohexanone is the most abundant oxygenated product along with deactivation. For all tested catalysts, increasing the reaction temperature up to 250 °C improves the HDO reactions without significant activity or selectivity loss. Higher rhodium loading extends the catalyst life and increases the activity and cyclohexane selectivity for the guaiacol feed. The experiments indicate that anisole, phenol, and guaiacol undergo aromatic hydrogenation on rhodium particles first, followed by deoxygenation on the acid sites over zeolite combined with additional hydrogenation.

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Catalysis of alkaline-modified mordenite for benzene alkylation of diolefin-containing dodecene for linear alkylbenzene synthesis

Cited by 39 publications

References 55 publications

Durability enhanced ionic liquid catalyst for Friedel–Crafts reaction between benzene and 1-dodecene: insight into catalyst deactivation

Durability enhanced ionic liquid catalyst for Friedel–Crafts reaction between benzene and 1-dodecene: insight into catalyst deactivation

On the remarkable resistance to coke formation of nanometer-sized and hierarchical MFI zeolites during ethanol to hydrocarbons transformation

Development of Bifunctional Hydrodeoxygenation Catalyst Rh‐HY for the Generation of Biomass‐Derived High‐Energy‐Density Fuels

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