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Murru C, Badía-Laíño R, Díaz-García ME. Oxidative Stability of Vegetal Oil-Based Lubricants. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2021; 9:1459-1476. [PMID: 35273833 PMCID: PMC8900678 DOI: 10.1021/acssuschemeng.0c06988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/06/2020] [Indexed: 06/14/2023]
Abstract
Lipids are widely distributed in nature and are one of the most important components of natural foods, synthetic compounds, and emulsions. To date, there is a strong social demand in the industrial sector for the use of sustainable products with a minimal environmental impact. Depending on their origin and composition, lipids can be employed as a plausible alternative as biodegradable lubricants in order to reduce the use of conventional mineral oil lubricants and mitigate their environmental impact. This perspective provides an overview of the advantages and constrains of vegetal oils under different lubrication regimes and the tribochemical reactions that can take place. Also, the different factors and pathways that influence their oxidation, the key role of moisture, and the changes of physical properties under pressure and temperature are reviewed. Special emphasis is devoted to the oxidation instability of fatty acids and vegetal oils and the physical and chemical approaches to improve oxidative and thermal stability are described in detail.
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Affiliation(s)
- Clarissa Murru
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Julián Clavería 8, Oviedo 33006, Asturias, Spain
| | - Rosana Badía-Laíño
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Julián Clavería 8, Oviedo 33006, Asturias, Spain
| | - Marta E Díaz-García
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Julián Clavería 8, Oviedo 33006, Asturias, Spain
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Jamil MAR, Siddiki SMAH, Touchy AS, Rashed MN, Poly SS, Jing Y, Ting KW, Toyao T, Maeno Z, Shimizu KI. Selective Transformations of Triglycerides into Fatty Amines, Amides, and Nitriles by using Heterogeneous Catalysis. CHEMSUSCHEM 2019; 12:3115-3125. [PMID: 30844116 DOI: 10.1002/cssc.201900365] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/06/2019] [Indexed: 06/09/2023]
Abstract
The use of triglycerides as an important class of biomass is an effective strategy to realize a more sustainable society. Herein, three heterogeneous catalytic methods are reported for the selective one-pot transformation of triglycerides into value-added chemicals: i) the reductive amination of triglycerides into fatty amines with aqueous NH3 under H2 promoted by ZrO2 -supported Pt clusters; ii) the amidation of triglycerides under gaseous NH3 catalyzed by high-silica H-beta (Hβ) zeolite at 180 °C; iii) the Hβ-promoted synthesis of nitriles from triglycerides and gaseous NH3 at 220 °C. These methods are widely applicable to the transformation of various triglycerides (C4 -C18 skeletons) into the corresponding amines, amides, and nitriles.
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Affiliation(s)
- Md A R Jamil
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
| | - S M A Hakim Siddiki
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
| | - Abeda Sultana Touchy
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
| | - Md Nurnobi Rashed
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
| | - Sharmin Sultana Poly
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
| | - Yuan Jing
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
| | - Kah Wei Ting
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
| | - Takashi Toyao
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto, 615-8520, Japan
| | - Zen Maeno
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
| | - Ken-Ichi Shimizu
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto, 615-8520, Japan
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