Green synthesis of ester base oil with high viscosity — Part II: Reaction kinetics study

Hu, Shaojian; Zhu, Jianhua; Wu, Bencheng; Ma, Rui; Li, Xiaohui

doi:10.1016/j.cherd.2020.10.015

Cited by 6 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, much work has been carried out in the design and synthesis of base oil with high viscosity. Zhu and coworkers reported the green synthesis of poly‐esters (PE) base oils, 7,8 with a high viscosity of 17–22 mm 2 ·s −1 at 100°C. The high‐viscosity poly α‐olefins (PAO) above 40 mm 2 ·s −1 at 100°C were also successfully obtained by polymerisation of mixed α‐olefins (C9–C11) derived from Fischer‐Tropsch liquid products using the metallocene catalyst 9 .…”

Section: Introductionmentioning

confidence: 99%

“…Recently, much work has been carried out in the design and synthesis of base oil with high viscosity. Zhu and coworkers reported the green synthesis of poly-esters (PE) base oils, 7,8 with a high viscosity of 17-22 mm 2 Ás À1 at 100 C. The high-viscosity poly α-olefins (PAO) above 40 mm 2 Ás À1 at 100 C were also successfully obtained by polymerisation of mixed α-olefins (C9-C11) derived from Fischer-Tropsch liquid products using the metallocene catalyst. 9 However, PAO base oils showed an undesirable compatibility with additives in the lubricant oil formulation owing to their the poor polarity, 10 and the oxidation stability for ester base oils is poor due to the existence of oxygen-containing structure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High‐viscosity polyalkylphenanthrene oils: Synthesis and evaluation of lubricating properties

Cui

Tang

Chen

et al. 2022

Lubrication Science

View full text Add to dashboard Cite

Producing lubricating base oils from coal-based chemicals is an alternative route for replacing the conventional petro-based lubricants. Herein, we firstly reported the synthesis of high-viscosity polyalkylphenanthrene oils derived from the coal-based chemicals (phenanthrene, C6/C8-olefins) by alkylation with acidic ionic liquid (Et 3 NHClÁ2AlCl 3 ) as catalyst. Their primary physicochemical properties were studied in detail to reveal their structure-property relationships, the existence of the phenanthrene ring in their molecular structure led to some good property, such as high-kinematic viscosity (12.6-30.2 mm 2 Ás À1 at 100 C), better flash point (>230 C), high-oxidative onset time (>230 C) and good polarity. Moreover, the tribological performances of the synthetic oils and the commercial PAO-20 lubricating base oil were studied for comparison, these alkylated phenanthrenes, especially PHP-3 and POP-3, exhibited much higher load-carrying capacity, reducing friction and anti-wear property than that observed on PAO-20.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High‐viscosity polyalkylphenanthrene oils: Synthesis and evaluation of lubricating properties

Cui

Tang

Chen

et al. 2022

Lubrication Science

View full text Add to dashboard Cite

show abstract

Synthesis and characterization of synthetic lubricants based on dibasic acid

et al. 2023

View full text Add to dashboard Cite

Synthetic esters have long been used in a variety of applications due to their excellent thermal stability, excellent cleanliness, natural lubricity, and polarity. In the present work, we aimed to prepare some synthetic base oils through preparation of different dibasic esters by esterification of dicarboxylic acids (adipic acid and azelaic acid) with different linear alcohols (hexanol, octanol, and decanol) and branched alcohol (2‐ethyl hexanol) at 120°C. The reaction yield ranges between 85% and 94%. Fourier‐transform infrared spectroscopy (FT‐IR) and proton nuclear magnetic resonance (1H‐NMR) spectroscopy were used to analyze the structures of the produced compounds. Using thermo gravimetric analysis (TGA), the heat stability of the produced esters was determined, and it was found that the prepared esters have high thermal stability. The degradation of the prepared esters takes place in the range between 300 and 600°C. The rheological behaviour of prepared esters shows Newtonian behaviours, which means that Newtonian fluids obey viscosity Newton's law. The viscosity is independent of the shear rate. The results showed that the lubricity properties, based on their pour point, flash point, and oxidation stability of the esters, were significantly affected by the linear and branched alcohols used. There is a slight increase in kinematic viscosity and viscosity index values with decreasing the internal chain length of the dibasic acid. The esters which were based on adipic acid such as C1 exhibited maximum values of VI: 187 compared to those which were based on azelaic acid such as F1 with VI: 182. Viscosity and viscosity index increases with increasing the number of carbon atoms of the used mono‐ol alcohols. Using branched alcohols gave almost the same viscosity results compared to using linear alcohol with the same number of carbons. Almost all prepared esters give pour point results ≤ −30°C.

show abstract

Preparation of high purity platinum nitrate using spent Pt-Rh catalyst from the production of nitric acid

Liu

Qiu

2023

J. Cent. South Univ.

View full text Add to dashboard Cite

Green synthesis of ester base oil with high viscosity — Part II: Reaction kinetics study

Cited by 6 publications

References 27 publications

High‐viscosity polyalkylphenanthrene oils: Synthesis and evaluation of lubricating properties

High‐viscosity polyalkylphenanthrene oils: Synthesis and evaluation of lubricating properties

Synthesis and characterization of synthetic lubricants based on dibasic acid

Preparation of high purity platinum nitrate using spent Pt-Rh catalyst from the production of nitric acid

Contact Info

Product

Resources

About