Kinetic modeling of 1-decene oligomerization to synthetic fuels and base oil over tungstated-zirconia catalyst

Techopittayakul, Tattep; Echaroj, Snunkhaem; Santikunaporn, Malee; Asavatesanupap, Channarong; Chen, Yi‐Hung; Yuan, Min-Hao

doi:10.1007/s11144-018-1485-y

“…For any given reaction time (lower than 120 min), an increase in reaction temperature significantly enhanced the conversion of 1-decene. This result corresponded well with our previous investigation on the 1-decene oligomerization [4,5]. The higher the reaction temperature, the shorter the reaction time to reach the highest conversion of 1-decene.…”

Section: Effect Of Temperature On Oligomer Product Compositionsupporting

confidence: 92%

“…In Lewis acid catalysis, oligomerization is activated by a hydrogen donor agent such as water, called cationic oligomerization [3]. Other agents for oligomerization include heterogeneous acid catalysts such as sulfatedalumina [1], tungsten-zirconia [4] and zeolite [5] that are cheaper than other types of catalysts. One important feature of zeolite catalysts is that their inner structure can be manipulated to tailor products [6,7], while spent zeolite catalysts can be simply regenerated via chemical or thermal treatment [8].…”

Section: Introductionmentioning

confidence: 99%

Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst

Echaroj

¹

,

Asavatesanupap

²

,

Chavadej

³

et al. 2021

Self Cite

View full text Add to dashboard Cite

A promising production route for a high-quality base stock for lubricants is the oligomerization of high molecular-weight olefins in a high energy efficiency system. Oligomerization of 1-decene (C10) was conducted in a microwave-assisted system over a HY zeolite catalyst at different reaction temperatures and times. Higher reaction temperature resulted in increasing formation of dimers and trimers. The oligomerization reaction yielded 80% conversion, 54.2% dimer product, 22.3% trimer product and 3.4% heavier product at 483 K for a reaction time of 3 h. The best fit kinetic model for the dimerization reaction was formulated from an assumption of no vacant reaction sites. For the trimerization reaction, a molecule of dimer (C20) formed on the active site, interacted with a molecule of 1-decene in the bulk solution to form a molecule of trimer (C30). Apparent activation energies for the dimerization and trimerization reactions were 70.8 ± 0.8 and 83.6 ± 0.9 kJ/mol, respectively. The C13-NMR spectrum indicated that the oligomer product contained a significant portion of highly branched hydrocarbons, causing a substantial reduction in the viscosity index compared to conventional poly-alpha olefin lubricant (PAO).

show abstract

“…(11), productivity can be predicted by plugging in the operating time of the distillation unit. Comparison between experimental data and productivity calculated by the polynomial equation produced R 2 very close to 1 which suggested that these predictions were accurate [21,22]. Productivity=4x10 -7 to 6 -3x10 -5 to 5 +0.0008to 4 -0.0096to 3 + 0 .…”

Section: Distillation Rate and Productivity Of The Distillation Unitmentioning

confidence: 64%

The Investigation of Heat Absorber on the Efficiency of Slanted Double-Slope Solar Distillation Unit

Pannucharoenwong¹,

Rattanadecho²,

Echaroj³

et al. 2020

IJHT

0

View full text Add to dashboard Cite

A rise in utility consumption in rural areas have promoted the demand for the development of solar-based technologies for water purification system. This research aimed to develop a slanted double-slope solar distillation unit (SDSD) assisted by heat absorbers, which is employed as a distillation unit for generating clear distilled water from underground water. The prototype SDSD distillation unit developed in this research was evaluated based on production efficiency, productivity, distillation rate and temperature measured at different locations inside the device. Significant parameters that were varied included the types of heat absorber used (gasket, rubber, aluminum, high carbon steel and zinc) and the size of heat absorber (10 to 90% of surface area inside the SDSD). Results demonstrated an increase in the production of distilled water as the surface area of heat absorber decreases. This is because a reduction in surface area of the heat absorber allowed a more intense sunlight to enter the system. Maximum productivity peaked at 1.2 liter per day (24.9% efficiency). Monitored data in both the upper and bottom part of the distillation unit revealed the highest distillation rate at 15:00 each day. Distillation rate decreases with water height and insulator's thermal conductivity, but increase with water speed. Additionally, a mathematical model was proposed which was capable of accurately predicting the production efficiency and productivity as a function of the heat absorber's size and distillation time. Under the same operating conditions, aluminum was found to generate the best results relative to other types of heat absorber.

show abstract

“…(11), productivity can be predicted by plugging in the operating time of the distillation unit. Comparison between experimental data and productivity calculated by the polynomial equation produced R 2 very close to 1 which suggested that these predictions were accurate [21,22]. Productivit=4x10 -7 to 6 -3x10 -5 to 5 +0.0008to 4 -0.0096to 3 + 0 .…”

Section: Distillation Rate and Productivity Of The Distillation Unitmentioning

confidence: 66%

The Investigation of Heat Absorber on the Efficiency of Slanted Double-Slope Solar Distillation Unit

Pannucharoenwong¹,

Rattanadecho²,

Echaroj³

et al. 2020

IJHT

2

0

View full text Add to dashboard Cite

A rise in utility consumption in rural areas have promoted the demand for the development of solar-based technologies for water purification system. This research aimed to develop a slanted double-slope solar distillation unit (SDSD) assisted by heat absorbers, which is employed as a distillation unit for generating clear distilled water from underground water. The prototype SDSD distillation unit developed in this research was evaluated based on production efficiency, productivity, distillation rate and temperature measured at different locations inside the device. Significant parameters that were varied included the types of heat absorber used (gasket, rubber, aluminum, high carbon steel and zinc) and the size of heat absorber (10 to 90% of surface area inside the SDSD). Results demonstrated an increase in the production of distilled water as the surface area of heat absorber decreases. This is because a reduction in surface area of the heat absorber allowed a more intense sunlight to enter the system. Maximum productivity peaked at 1.2 liter per day (24.9% efficiency). Monitored data in both the upper and bottom part of the distillation unit revealed the highest distillation rate at 15:00 each day. Distillation rate decreases with water height and insulator's thermal conductivity, but increase with water speed. Additionally, a mathematical model was proposed which was capable of accurately predicting the production efficiency and productivity as a function of the heat absorber's size and distillation time. Under the same operating conditions, aluminum was found to generate the best results relative to other types of heat absorber.

show abstract

Kinetic modeling of 1-decene oligomerization to synthetic fuels and base oil over tungstated-zirconia catalyst

Cited by 9 publications

References 33 publications

Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst

Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst

The Investigation of Heat Absorber on the Efficiency of Slanted Double-Slope Solar Distillation Unit

The Investigation of Heat Absorber on the Efficiency of Slanted Double-Slope Solar Distillation Unit

Contact Info

Product

Resources

About