Micro-kinetic modeling of the catalytic dehydration of 1-decanol over precipitated γ-Al2O3

Echaroj, Snunkhaem; Santikunaporn, Malee; Chavadej, Sumaeth

doi:10.1007/s11144-014-0782-3

Cited by 11 publications

(3 citation statements)

References 19 publications

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“…The present work was a continuation of our previous study on the dehydration reaction of a primary alcohol over precipitated plain Al 2 O 3 catalysts to produce olefins. 48 First, the catalytic activity and stability of sulfated-Al 2 O 3 catalysts were investigated as a function of reaction temperature and concentration of modifying agents. Three different valuable products can be obtained from 1-decanol, including α-olefin, internal olefins, and di-n-decyl ether.…”

Section: Introductionmentioning

confidence: 99%

Transformation of Bioderived 1-Decanol to Diesel-like Fuel and Biobased Oil via Dehydration and Oligomerization Reactions

2017

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The production of diesel-like fuel and base oil from bioderived fatty alcohol through a two-steps process, dehydration reaction and oligomerization reaction, was studied. The bioderived 1-decanol was converted to olefin mixtures and di-n-decyl ether via the dehydration over commercial γ-alumina catalysts with and without acid modification in a fixed-bed reactor at different temperatures. The catalysts studied were characterized using nitrogen adsorption, temperature-programmed desorption, X-ray diffraction, and thermogravimetric analysis. The dehydration reaction over the unmodified Al 2 O 3 was found to be dominant toward the selectivity for 1-decene. The modified Al 2 O 3 was shown to promote skeletal internal isomerization and cracking reaction due to strong acid sites. Furthermore, the stability testing results of 1.5 M (H 2 SO 4 )/Al 2 O 3 at 573 K demonstrated a rapid deactivation of strong acid sites during the first 10 h of operation. Oligomerization of mixed olefins (1decanol, 1-decene, and internal olefin) over USY zeolite was found to give the highest conversion of 60%, compared to other zeolites, and the selectivities for dimers, trimers, and heavier hydrocarbons were 72, 24, and 4%, respectively. Evaluation of oligomers properties such as viscosity, viscosity index, simulation distillation, and pour point indicated that dimers and heavier hydrocarbons after hydrogenation can be used as transportation fuel and biobased oil.

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Section: Introductionmentioning

confidence: 99%

Transformation of Bioderived 1-Decanol to Diesel-like Fuel and Biobased Oil via Dehydration and Oligomerization Reactions

2017

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“…Reaction conditions were optimized using RSM. On the basis of Echaroj et al's 25 work, LHSV and reaction temperature were proposed as the key factors for 1-decanol dehydration over alumina. The two variables and the yield were considered in a binary quadratic equation, the parameters of which were fitted by Design-Expert 8.0.6 Trial according to the specific experimental data of a central composite design.…”

Section: Methodsmentioning

confidence: 99%

Dehydration of Long-Chain n-Alcohols to Linear α-Olefins Using Sodium-Modified γ-Al₂O₃

Chen

Lü

Zhu

et al. 2020

Ind. Eng. Chem. Res.

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Linear α-olefins (C8–C12 α-olefin, LAOs) are acknowledged as high-value-added chemicals in both lubricant production and the polyolefin industry. An alternative route to the synthesis of high-purity LAOs is the dehydration of linear long-chain n-alcohols, whereas elevating the activity and selectivity of catalysts remains a challenge. Herein, we presented that on using sodium-modified γ-Al2O3 as the catalyst, a high selectivity (up to 96.87%) to 1-decene was achieved, and an optimized experimental condition (329 °C and 0.25 h–1) was found using the response surface method. Characterization results including X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), pyrolysis (Py)-IR, NH3-temperature-programmed desorption (TPD), and CO2-TPD showed that a suitable ratio (∼0.4 wt %) of sodium impregnation could inhibit the strong acid sites of the catalyst, and sodium impregnation led to the formation of additional base sites, which accounted for the synergistic effect with other acid sites to promote further conversion of ethers to olefins. This work is of significance for the synthesis of LAOs from long-chain n-alcohols.

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“…This study was a fundamental work to explore the oligomerization of 1‐octene and 1‐decene by AlCl 3 ‐based catalysts over supported alumina and silica at the selected optimum conditions. Among other common olefin monomers, 1‐octene and 1‐decene are the most applicable materials for the synthesis of oligomers/oils, since their chain length is relatively long, they are economically available and also can be derived from vegetable oils as a renewable source of feedstock …”

Section: Introductionmentioning

confidence: 99%

Highly efficient supported AlCl₃‐based cationic catalysts to produce polyα‐olefin oil base stocks

Dehghani

Hanifpour

Nekoomanesh‐Haghighi

et al. 2020

J of Applied Polymer Sci

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The main aim of this research is to decrease the amount of AlCl3 content that is very corrosive and hazardous in the catalytic system, required for the α‐olefin oligomerization without substantial change of final oil features. This was successfully achieved by supporting AlCl3 on different carriers. More precisely, a series of supported bimetallic catalysts was synthesized by immobilization of AlCl3 and TiCl4 onto Al2O3, SiO2, and mixed supports, that is, Al2O3/FeCl3 and SiO2/FeCl3. It was found that silica and alumina‐based catalysts had higher catalytic activities compared to support free AlCl3; however, this enhancement for silica‐based supports was more significant. According to gel permeation chromatography (GPC) results, the use of single supports, that is, Al2O3 and SiO2, increased oligomer's molecular weight, while the application of mixed supports resulted in the decrease of molecular weight of the oligomers. Viscosity characteristics of the synthesized oligomers have also been studied at two different temperatures of 40 and 100°C (KV40 and KV100). The viscosity index (VI) values, derived from KV40 and KV100, of the prepared oligomers were in the range of 126–145. The molecular weight and termination mechanisms of the oligomers were studied by 1H‐NMR spectroscopy. The obtained results disclosed that the employed reaction conditions led to the production of oligomer chains with various structures including vinylidene (Vd), and di and three‐substituted vinylene (2Vn, 3Vn) structures.

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Micro-kinetic modeling of the catalytic dehydration of 1-decanol over precipitated γ-Al2O3

Cited by 11 publications

References 19 publications

Transformation of Bioderived 1-Decanol to Diesel-like Fuel and Biobased Oil via Dehydration and Oligomerization Reactions

Transformation of Bioderived 1-Decanol to Diesel-like Fuel and Biobased Oil via Dehydration and Oligomerization Reactions

Dehydration of Long-Chain n-Alcohols to Linear α-Olefins Using Sodium-Modified γ-Al₂O₃

Highly efficient supported AlCl₃‐based cationic catalysts to produce polyα‐olefin oil base stocks

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Micro-kinetic modeling of the catalytic dehydration of 1-decanol over precipitated γ-Al2O3

Cited by 11 publications

References 19 publications

Transformation of Bioderived 1-Decanol to Diesel-like Fuel and Biobased Oil via Dehydration and Oligomerization Reactions

Transformation of Bioderived 1-Decanol to Diesel-like Fuel and Biobased Oil via Dehydration and Oligomerization Reactions

Dehydration of Long-Chain n-Alcohols to Linear α-Olefins Using Sodium-Modified γ-Al2O3

Highly efficient supported AlCl3‐based cationic catalysts to produce polyα‐olefin oil base stocks

Contact Info

Product

Resources

About

Dehydration of Long-Chain n-Alcohols to Linear α-Olefins Using Sodium-Modified γ-Al₂O₃

Highly efficient supported AlCl₃‐based cationic catalysts to produce polyα‐olefin oil base stocks