Original Article:
Oxidation and thermal stability analysis of hexadecyl mercaptan added to engine oil
Rong-Yu Chen, et al.
Journal of Thermal Analysis and Calorimetry,2022, 147, 4685–4696.
10.1007/s10973-021-10792-5
After a period of operation in an internal combustion engine, the oil may deteriorate due to oxidation due to prolonged exposure to extreme temperatures or exposure to air. Once oxidized, the oil turns into sludge, which gradually deteriorates in performance and increases in viscosity. Antioxidants protect oils from autoxidation in different ways depending on their structure and mode of action. Organosulfide is a peroxide decomposer because it helps break down peroxides from different peroxide groups.
Rong-Yu Chen et al. studied the effect of hexadecyl mercaptan (C16H34S) as an additive on the oxidation and thermal stability of engine oils. In this work, the oxidation induction time (OIT), oxidation mass loss, kinematic viscosity and viscosity index (VI), and apparent activation energy (Ea) were evaluated by differential scanning calorimetry, thermogravimetric analysis and thermokinetic models. The results show that the addition of C16H34S can effectively improve the oxidation stability of engine oil and greatly delay the oxidation time. Taking sample E03 as an example, its OIT was prolonged by 28 minutes, the mass loss was reduced in an oxygen-enriched environment, the viscosity index was improved, and Ea was effectively improved.
Chemicals Related in the Paper:
| Catalog Number | Product Name | Structure | CAS Number | Price |
|---|---|---|---|---|
| ACM25360092 | Hexadecylmercaptan |  |
25360-09-2 | Price |
