Sustainable Approach for Paraffin Wax Removal Using CO2 Switchable Solvents

石蜡 溶解 材料科学 巴西棕榈蜡 差示扫描量热法 化学工程 倾点 浊点 溶剂 液体石蜡 溶解度 乳状液 色谱法 化学 有机化学 复合材料 萃取(化学) 工程类 物理 热力学
作者
Xin Lv,Jie Qi,Xiaojiang Li,Na Wang,Hongsheng Lu
出处
期刊:Industrial & Engineering Chemistry Research [American Chemical Society]
卷期号:60 (44): 16109-16115 被引量:3
标识
DOI:10.1021/acs.iecr.1c03268
摘要

In this work, a sustainable approach for paraffin wax removal by using CO2 switchable-hydrophilicity solvents (SHSs) is developed, where paraffin wax exhibits better solubility in SHSs and can be simply separated by introducing CO2. Here, SHSs exhibit an excellent dissolving capacity for paraffin wax, especially, N,N-dimethylcyclohexylamine (DMCHA). All SHSs can effectively dissolve paraffin wax at a dissolution rate > 0.03 g/min. The detection using differential scanning calorimetry and the rheology behavior demonstrated that the decreased viscosity, melting points, and wax appearance temperature of paraffin wax in SHSs (especially in DMCHA) are lower than in traditional solvents, such as kerosene and petroleum ether, which contributes to improvement in the paraffin wax removal. Furthermore, the polarizing microscope images of paraffin wax reveal that the changed properties of paraffin wax in SHS are attributed to the dispersion of needle-shaped wax crystals in solvent. Interestingly, the paraffin wax is separated from SHS by introducing CO2, and the SHS is recovered under N2 at 65 °C after separating paraffin wax. Here, the recovery of paraffin wax can be improved by increasing water content, temperature, and aeration rate. Based on the molecular dynamics simulation, it is revealed that paraffin wax containing hydrocarbons (the main component of wax) with different alkane carbon numbers exhibits good dissolution behavior in DMCHA. After introducing CO2, the separation of paraffin wax is caused by the transformation from the hydrophobic state to the hydrophilic state of DMCHA.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
lyl完成签到,获得积分10
刚刚
Jocd完成签到,获得积分10
刚刚
Akim应助孙二二采纳,获得10
1秒前
优雅的千凝完成签到,获得积分10
1秒前
Time完成签到,获得积分10
2秒前
格拉希尔完成签到 ,获得积分10
3秒前
Yzh完成签到,获得积分10
4秒前
shuke完成签到,获得积分10
5秒前
啊七飞完成签到,获得积分10
5秒前
琦琦国王完成签到,获得积分10
6秒前
务实的绝悟完成签到,获得积分10
9秒前
经纲完成签到 ,获得积分0
9秒前
我说苏卡你说不列完成签到,获得积分10
11秒前
CipherSage应助科研通管家采纳,获得10
13秒前
13秒前
顾矜应助科研通管家采纳,获得10
13秒前
13秒前
劲秉应助科研通管家采纳,获得10
13秒前
sun应助科研通管家采纳,获得20
13秒前
苗条绝义应助科研通管家采纳,获得10
14秒前
隐形曼青应助科研通管家采纳,获得10
14秒前
科研通AI5应助科研通管家采纳,获得10
14秒前
蔡从安完成签到,获得积分20
14秒前
劲秉应助科研通管家采纳,获得10
14秒前
CipherSage应助科研通管家采纳,获得10
14秒前
NexusExplorer应助科研通管家采纳,获得10
14秒前
黑囡应助科研通管家采纳,获得10
14秒前
14秒前
科研通AI5应助科研通管家采纳,获得10
14秒前
科研通AI2S应助科研通管家采纳,获得10
14秒前
5165asd完成签到 ,获得积分10
15秒前
ritata完成签到 ,获得积分10
16秒前
小彤完成签到 ,获得积分10
17秒前
17秒前
ll应助蔡从安采纳,获得10
18秒前
boltos完成签到,获得积分20
19秒前
善学以致用应助橙猫猫采纳,获得10
20秒前
GEZIKU完成签到 ,获得积分10
22秒前
23秒前
陈文学完成签到,获得积分10
24秒前
高分求助中
Continuum Thermodynamics and Material Modelling 3000
Production Logging: Theoretical and Interpretive Elements 2700
Mechanistic Modeling of Gas-Liquid Two-Phase Flow in Pipes 2500
Structural Load Modelling and Combination for Performance and Safety Evaluation 1000
Conference Record, IAS Annual Meeting 1977 720
電気学会論文誌D(産業応用部門誌), 141 巻, 11 号 510
Typology of Conditional Constructions 500
热门求助领域 (近24小时)
化学 材料科学 生物 医学 工程类 有机化学 生物化学 物理 纳米技术 计算机科学 内科学 化学工程 复合材料 基因 遗传学 物理化学 催化作用 量子力学 光电子学 冶金
热门帖子
关注 科研通微信公众号,转发送积分 3566811
求助须知:如何正确求助?哪些是违规求助? 3139560
关于积分的说明 9431989
捐赠科研通 2840353
什么是DOI,文献DOI怎么找? 1560990
邀请新用户注册赠送积分活动 730141
科研通“疑难数据库(出版商)”最低求助积分说明 717855