Isobutane-Olefin Alklation with Inhibited Aluminum Chloride Catalysts

Roebuck, A. K.; Evering, B. L.

doi:10.1021/i360033a015

Cited by 28 publications

(13 citation statements)

References 6 publications

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“…The amount of isooctanes (C 8 alkanes) in the alkylate was approximately 60 wt%, and the TMP-to-DMH ratio ranged from 4 to 6 (entries 1 and 2). These results are similar to those obtained from a typical commercial plant (Corma and Martinez, 1993) but they are much lower than those of composite CILs (Liu et al, 2008) and inhibited aluminum chloride catalysts (Roebuck and Evering, 1970).…”

Section: Effect Of the Copper-containing Il Additivessupporting

confidence: 86%

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Isobutane/2-Butene Alkylation Catalyzed by Strong Acids in the Presence of Ionic Liquid Additives

Cong

Liu

2014

Petroleum Science and Technology

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Isobutane/2-butene alkylation catalyzed by binary mixtures of acidic ionic liquids (ILs) and strong acids (sulfuric acid or H 2 SO 4 and triflic acid or CF 3 SO 3 H) was investigated. The catalytic performances of H 2 SO 4 and CF 3 SO 3 H were considerably improved when ILs were added. Using [Emim][OTf]-CuCl/H 2 SO 4 as the catalyst, an alkylate with a high content of the desired trimethylpentane (up to 79.6 wt%) and a high research octane number (up to 99.1) was obtained. The results of electrospray ionization-mass spectrometry indicated that the better distributions of the products obtained with the IL/acid mixtures were due to the Cu-containing anions and cations of the ILs.

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Section: Effect Of the Copper-containing Il Additivessupporting

confidence: 86%

“…These results may be attributed to the capability of the copper-containing anions in CILs to suppress the polymerization reaction (Roebuck and Evering, 1970;Wang et al, 2007). The coppercontaining IL additives seem to have the same effect on Brønsted acid-catalyzed alkylation.…”

Section: Effect Of the Copper-containing Il Additivesmentioning

confidence: 89%

Isobutane/2-Butene Alkylation Catalyzed by Strong Acids in the Presence of Ionic Liquid Additives

Cong

Liu

2014

Petroleum Science and Technology

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“…In this work, 31 P NMR chemical shifts of the ILs for alkylation reaction were determined. The chemical shifts of those ILs with weaker Lewis acidity [34,35], such as [(C 2 H 5 ) 3 NH]Cl−CuCl and [(C 2 H 5 ) 3 NH]Cl−ZnCl 2 , benzene−CuAlCl 4 , and ether−CuClAl 4 , were also measured for comparison. For convenience, the apparent molar ratio of organic salt to AlCl 3 was 1:1.6, while the apparent molar ratio of MCl x (M = Cu, Ag, or Zn; x = 1 or 2) to AlCl 3 was 0.5:1.…”

Section: An Values and C 4 Alkylation Performancementioning

confidence: 99%

Mixed Chlorometallate Ionic Liquids as C4 Alkylation Catalysts: A Quantitative Study of Acceptor Properties

Pang¹,

Liu²,

Wang³

2018

Catalysts

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The acceptor properties of mixed chlorometallate ionic liquids for isobutane-butene alkylation (C4 alkylation) reaction were studied. These ionic liquids were prepared by mixing metal chlorides with either triethylamine hydrochloride or 1-butyl-3-methylimidazolium chloride in various molar ratios. Using triethylphosphine oxide as a probe, Gutmann Acceptor Numbers (AN) of the catalysts were determined, and the Lewis acidity of mixed chlorometallate ionic liquids was quantitatively measured. Additionally, AN value was developed to determine the relationship between Lewis acidity and catalytic selectivity. The favorite AN value for the C4 alkylation reaction should be around 93.0. The [(C2H5)3NH]Cl–AlCl3−CuCl appears to be more Lewis acidity than that of [(C2H5)3NH]Cl–AlCl3. The correlation of the acceptor numbers to speciation of the mixed chlorometallate ionic liquids has also been investigated. [AlCl4]−, [Al2Cl7]−, and [MAlCl5]− (M = Cu, Ag) are the main anionic species of the mixed chlorometallate ILs. While the presence of [(C2H5)3N·M]+ cation always decreases the acidity of the [(C2H5)3NH]Cl−AlCl3−MCl ionic liquids.

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“…12 Using ionic liquids as new catalysts can overcome these shortcomings and provide higher catalytic activities. Of the ionic liquid catalysts screened Figure 5).…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Removal of Trace Olefins from Aromatics at Room Temperature Using Pyridinium and Imidazolium Ionic Liquids

Sun

Shi

2011

Ind. Eng. Chem. Res.

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BuPy]BrÀAlCl 3 and [BMIm]BrÀAlCl 3 were used to remove trace olefins from aromatics. At room temperature, almost 100% olefin conversion was obtained using [BuPy]BrÀAlCl 3 as the catalyst. The effects of the cation and the dosage of AlCl 3 in the ionic liquid were investigated. It was found that the dosage of AlCl 3 had a significant impact on the reaction, whereas the organic cation type mainly influenced the conversion. Anions in [BuPy]BrÀAlCl 3 such as AlCl 4 À and Al 2 Cl 7 À were shown to exist by ESI-MS, and the mechanism of the reaction catalyzed by [BuPy]BrÀAlCl 3 was studied. The investigation of various reaction parameters showed that the process saves time, consumes less energy, separates products more easily, and produces less pollution to the environment than conventional methods to remove trace olefins from aromatics.

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Isobutane-Olefin Alklation with Inhibited Aluminum Chloride Catalysts

Cited by 28 publications

References 6 publications

Isobutane/2-Butene Alkylation Catalyzed by Strong Acids in the Presence of Ionic Liquid Additives

Isobutane/2-Butene Alkylation Catalyzed by Strong Acids in the Presence of Ionic Liquid Additives

Mixed Chlorometallate Ionic Liquids as C4 Alkylation Catalysts: A Quantitative Study of Acceptor Properties

Removal of Trace Olefins from Aromatics at Room Temperature Using Pyridinium and Imidazolium Ionic Liquids

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