芳香聚 (氨基酸) 作为一种有效的低温脱硫剂,用于处理原油与水中的乳液
Zhuyu Wu1, Qiliang Yang1, Can Cui1
1School of Chemical Engineering, Key Laboratory of Low-Dimensional Materials and Big Data, Guizhou Minzu University, Guizhou Provincial Key Laboratory of Low Dimensional Materials and Environmental and Ecological Restorations, Guiyang, Guizhou 550025, PR China.
Journal of hazardous materials
|May 16, 2024
概括
新的两性芳香聚合物 (氨基酸) 聚合物作为有效的生物降解性去乳剂,用于油在水乳液. 这些先进的聚合物表现出快速脱油和高效率,即使在具有挑战性的条件下.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
背景情况:
- 乳液稳定性是各种工业过程中的一个关键挑战.
- 传统的除剂往往会给环境带来风险.
- 开发高效且可生物降解的脱硫剂对于可持续的实践至关重要.
研究的目的:
- 设计和合成新型的两性芳香聚合物 (氨基酸) 作为可生物降解的脱硫剂.
- 调查聚合物结构和乳液特性对脱效率的影响.
- 阐明这些新型聚合物的脱机制.
主要方法:
- 聚 (L-胺-乙乙) 块聚 (L-氨) (PBLG15-b-PPA15) 和聚 (L-氨) 块聚 (L-氨) (PTyr15-b-PPA15) 的合成.
- 在不同的条件下 (剂量,pH值,盐度,油含量) 对脱效率的实验性评估.
- 密度函数理论 (DFT) 计算,以了解界面相互作用和脱机制.
主要成果:
- PBLG15-b-PPA15在2分钟内从5.0重%的O/W乳液中实现了>99.97%的脱油.
- PTyr15-b-PPA15在20.0重%的O/W乳液中显示出高效率 (>99.99%的脱油率).
- 脱硫剂迅速迁移到油水界面,它们的"牙"侧链有助于凝结和花块化.
- DFT计算表明,增强的分子间相互作用可以改善脱.
结论:
- 两性芳香聚 (氨基酸) 是一种高效的可生物降解脱硫剂.
- 结构特征如芳香度,极性和状侧链增强了性能.
- 优化界面相互作用是提高脱硫效率和降低温度要求的关键.
相关概念视频
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
1.9K
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
1.9K
Colloids
17.4K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
17.4K
Amines to Amides: Acylation of Amines
2.4K
Various carboxylic acid derivatives (such as acid chlorides, esters, and anhydrides) can be used for the acylation of amines to yield amides. The reaction requires two equivalents of amines. The first amine molecule functions as a nucleophile and attacks the carbonyl carbon to produce a tetrahedral intermediate. This is followed by the loss of the leaving group and restoration of the C=O bond.
Next, the second equivalent of amine serves as a Brønsted base and deprotonates the quaternary...
Next, the second equivalent of amine serves as a Brønsted base and deprotonates the quaternary...
2.4K
Physical Properties of Amines
3.1K
Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.
3.1K
Olefin Metathesis Polymerization: Overview
2.1K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
2.1K
Anionic Chain-Growth Polymerization: Overview
2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.1K


