高自由脂肪酸原料的室温化为生物柴油
Minto Supeno1, John P Sihotang1, Yolinda V Panjaitan1
1Department of Chemistry, Universitas Sumatera Utara Medan 20155 Indonesia minto@usu.ac.id.
RSC advances
|November 13, 2023
概括
这项研究使用同质化剂和硫酸催化剂在室温下从油酸中实现了高生物柴油转化. 该过程为生物柴油生产提供了更快,更有效的方法.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 可再生能源可再生能源是可再生能源.
- 催化剂是一种催化剂.
背景情况:
- 生物柴油生产通常需要高温,从而增加能源成本.
- 高自由脂肪酸原料的化存在挑战.
- 开发高能效的催化工艺对于可持续的生物柴油至关重要.
研究的目的:
- 在室温下研究油酸对生物柴油的化.
- 为了评估同质化装置和硫酸催化剂的有效性.
- 为了最大限度地转化生物柴油,优化过程参数.
主要方法:
- 使用硫酸作为催化剂的油酸的化.
- 使用同质化装置在室温下加剧反应.
- 摩尔比率,催化剂度,旋转速度和反应时间的系统变化.
主要成果:
- 实现了96.1 ± 0.4%的最大生物柴油转化率.
- 最佳条件:1:12比,0.7mol L-1催化剂,每分钟4000转,30分钟.
- 催化剂可重复使用需要添加新鲜的甲醇;然而,这种方法是高效的.
结论:
- 同质化剂强化化可在室温和较短的反应时间下有效地生产生物柴油.
- 生物柴油的性能符合国际标准,除了氧化稳定性.
- 生产的生物柴油表现出适合冬季使用的流动特性.
相关概念视频
Carboxylic Acids to Esters: Acid-Catalyzed (Fischer) Esterification Overview
18.1K
The Fischer esterification reaction was developed by the German chemist Emil Fischer in 1895. It is a condensation reaction between carboxylic acids and alcohols in an acidic medium to give esters and water.
18.1K
Carboxylic Acids to Esters: Acid-Catalyzed (Fischer) Esterification Mechanism
7.9K
Carboxylic acids react with alcohols to yield esters via an acid-catalyzed condensation reaction called Fischer esterification. This is a nucleophilic acyl substitution reaction that proceeds via a tetrahedral intermediate, where a water molecule is eliminated as the leaving group.
7.9K
Lipid Catabolism
19
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
19
Esters to Carboxylic Acids: Saponification
4.4K
Esters can be hydrolyzed to carboxylic acids under acidic or basic conditions. Base-promoted hydrolysis of esters is a nucleophilic acyl substitution reaction in which esters react with an aqueous base, followed by an acid to give carboxylic acids. This reaction is also known as saponification because it forms the basis for making soaps from fats.
The reaction requires a base in stoichiometric amounts, which participates in the reaction and is not regenerated later. So, the base acts as a...
The reaction requires a base in stoichiometric amounts, which participates in the reaction and is not regenerated later. So, the base acts as a...
4.4K
Esters to Carboxylic Acids: Acid-Catalyzed Hydrolysis
2.9K
Hydrolysis of esters under acidic conditions proceeds through a nucleophilic acyl substitution. In the presence of excess water, the reaction proceeds in a reversible manner, forming carboxylic acids and alcohols.
During hydrolysis, the ester is first activated towards nucleophilic attack through the protonation of the carboxyl oxygen atom by the acid catalyst. The protonation makes the ester carbonyl carbon more electrophilic. In the next step, water acts as a nucleophile and adds to the...
During hydrolysis, the ester is first activated towards nucleophilic attack through the protonation of the carboxyl oxygen atom by the acid catalyst. The protonation makes the ester carbonyl carbon more electrophilic. In the next step, water acts as a nucleophile and adds to the...
2.9K
Alkylation of β-Diester Enolates: Malonic Ester Synthesis
3.4K
Malonic ester synthesis is a method to obtain α substituted carboxylic acids from ꞵ-diesters such as diethyl malonate and alkyl halides.
3.4K


