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1.
直链重烷基苯磺酸盐的驱油能力研究 总被引:5,自引:0,他引:5
研究了所合成的各种结构的直链烷基苯磺酸盐单剂及其复配体系在不同碱质量分数情况下对大庆四厂油/水界面张力情况。结果表明;对同一碳链长度的直链烷基苯磺酸盐,带甲基的比带乙基、异丙基和苯环上不带取代基的烷基苯磺酸盐降低界面张力的能力强;同样结构的十六碳链长的烷基苯磺酸盐又较其他碳链长度的烷基苯磺酸盐效果更优;长、短碳链的带甲基的直链烷基苯磺酸盐按一定比例复配,协同效应显著;与支链烷基苯磺酸盐复配后,体系的驱油能力、抗稀释性和抗Ca^2 、Mg^2 能力明显增加。直链与支链按一定比例复配将是烷基苯磺酸盐作为驱油用主剂的发展方向。 相似文献
2.
Alan E. Sherry Benjamin E. Chapman Michael T. Creedon James M. Jordan Rosa L. Moese 《Journal of the American Oil Chemists' Society》1995,72(7):835-841
There has long been interest in methyl ester sulfonates (MES) derived from natural or renewable sources, such as palm oil,
with considerable effort focused on process development. A major drawback with current process technology is the formation
of dark brown impurities that create aesthetic and odor issues in the final product. These issues are usually addressed by
bleaching rather than by chemical purification. This paper reports on a simple yet highly effective nonbleach, two-step process
for purifying palm C16–18 potassium methyl ester sulfonates. The first step comprises addition of water to the impure surfactant
mixture. Preferably, the temperature of the system is maintained above the Krafft point of the surfactant, thereby completely
solubilizing the surfactant and associated impurities. Once completely dissolved, the surfactant mixture is allowed to cool,
and the potassium-neutralized methyl ester sulfonate precipitates out selectively. In the second step, the purified surfactant
is recovered by gravity- or pressure-filtration or by centrifugation, followed by drying. The process significantly improves
C16–18 MES analytical purity and color without raising safety or environmental concerns. It also allows for the purification
of products derived from lower-grade methyl esters, resolves odor issues, and does not require use of substantial amounts
of solvent such as methanol. 相似文献
3.
J. L. Berna C. Bengoechea A. Moreno R. S. Rounds 《Journal of surfactants and detergents》2000,3(3):353-359
Sulfonic acids of linear alkylbenzene (LAB) are converted into the corresponding sodium salts to produce the most widely used
anionic surfactant worldwide, linear alkylbenzene sulfonate (LAS). Used in many industrial applications and consumer products,
the physical and mechanical properties of the sulfonates are strongly dependent on the LAB manufacturing process. Until recently,
commercial alkylation of benzene has employed aluminum chloride or hydrogen fluoride catalysts, but a new fixed-bed alkylation
process (DETAL) has been developed with improved 2-phenyl isomer selectivity and low tetralin concentration. In order to better
understand the rheology of LAS in aqueous media, a comprehensive comparative evaluation of sulfonic acids and sodium sulfonates
of the three LAB process derivatives has been done using dynamic mechanical rheometry, steady shear viscometry, and X-ray
diffraction for phase identification. LAB sulfonic acids are Newtonian fluids in the temperature range of 20–60°C. The neat
AlCl3, HF, and DETAL sulfonic acids are Newtonian fluids within the temperature range of 20–60°C. At 30 wt%, all three sulfonates
are Newtonian at 20–60°C, and the 40 wt% AlCl3 sodium sulfonate remains in the Newtonian regime within this temperature range. Lamellar liquid crystalline phases have been
identified for the sulfonates in the concentration range of 40–60 wt% in water at 20–60°C, and a hexagonal lattice phase also
has been identified for DETAL sodium alkylbenzene sulfonate at 40 wt%, 60°C. The presence of anisotropic phases results in
non-Newtonian pseudoplastic behavior with time-dependent viscosity functions. 相似文献
4.
论述了脂肪酸甲酯磺酸盐(MES)的性质,并通过特殊提纯丁艺对商品MES进行了精制,对提纯前后的产品组成情况进行了分析。结果表明,所设计的提纯工艺具有理想的收率,二钠盐的含量大幅下降,且易于操作。另外对其在液体洗涤剂中的应用现状,及以MES为主表面活性剂的节水、节能型超浓缩绿色液体洗涤剂的开发进行了分析。 相似文献
5.
6.
Performance of sulfoxylated fatty acid methyl esters 总被引:3,自引:0,他引:3
Sulfoxidation of fatty acid methyl esters with SO2, O2, and ultraviolet light of appropriate wavelength has led to the synthesis of methyl esters sulfonates or sulfoxylates known
as Φ-MES because of the possible random position of SO3 group in the alkyl chain. This work describes experimental measurements of physical properties such as solubility and viscosity
of sodium Φ-MES water solutions. Amphipathic properties such as surface tension, critical micelle concentration, wetting and
foaming powers were measured as well and compared to linear alkylbenzene sodium sulfonate (LAS). Finally, stability to water
hardness, dishwashing test, and detergency performance were evaluated. Expectedly, these products may be used as LAS partners
either in heavy-duty powders or in hand dishwashing liquids. Experimental results on Φ-MES of varying carbon number indicate
that C16 is the optimal carbon chain length. 相似文献
7.
脂肪酸甲酯磺酸盐工业的原料及其经济性 总被引:1,自引:0,他引:1
对甲酯磺酸盐的发展进行了概述。论述了甲酯磺酸盐的现状、原料来源、制备工艺、应用、工业化生产及其经济性。介绍了Chemithon公司的MES工艺,并对甲酯磺酸盐未来的发展趋势进行了预测。 相似文献
8.
9.
10.
An evaluation of the detergency value of a series of alkylbenzene sulfonates by ultrasonic technique
Helen A. Ludeman John A. Balog J. C. Sherrill 《Journal of the American Oil Chemists' Society》1958,35(1):5-8
Summary The soil removal efficiency of 17 sodium alkylbenzene sulfonates having alkyl residues ranging from six- to 18-carbon atoms,
which have been synthesized and purified especially for this work, has been described. Evaluation has been accomplished by
means of an ultrasonic cone transducer capable of producing mechanical action of a very highly reproducible character and
at a measurable rate of expenditure of energy. Compounds having straight-chain alkyl residues produce generally greater detergency
efficiency than the branch chain homolog. Detergent character becomes pronounced at about 10 carbon atoms in the alkyl residue,
but detergency is diminished above about 14 to 16 carbon atoms in the alkyl group because of reduced solubility. 相似文献
11.
12.
The effect of surfactant structure on enzyme stability in heavy duty laundry liquids was investigated. Surfactants studied
were alcohol ethoxylates and anionic surfactants having varying hydrophobic and hydrophilic types and chain lengths. Enzymes
used were proteases and amylases. The results showed these enzymes were considerably more stable when formulated into laundry
liquids containing alcohol ethoxylates and ethoxysulfates than when formulated with alcohol sulfates and surfactants containing
sulfonate groups such as linear alkylbenzene sulfonates and alpha olefin sulfonates. Enzyme stabilizer systems were only partially
effective in reducing the enzymedeactivating influence of sulfonate-containing surfactants.
Presented at the AOCS meeting in Dallas, May, 1984. 相似文献
13.
A series of alkylbenzene sulfonates and alkyl sulfates was prepared and examined for biodegradability by measuring the oxygen
uptake when exposed to substrate adapted microorganisms in the Warburg respirometer. The Warburg results showed that certain
linear alkylate alkylbenzene sulfonates and alcohol sulfates are oxidized completely to carbon dioxide and water. The use
of radioactive carbon compounds confirmed the Warburg results. 相似文献
14.
I. Yamane 《Journal of the American Oil Chemists' Society》1978,55(1):81-86
In the sulfonation and sulfation of alpha olefin (AO), linear alkylbenzene (LAB), and alcohol ethoxylate (AE), improved reaction
yields and products’ color were obtained by using the TO-Reactor recently developed in Lion Fat & Oil Co., Ltd., compared
with those obtained in a conventional falling-film type reactor. These improvements especially were remarkable in the case
of AO, so that light-colored alpha olefin sulfonate (AOS), having improved performance properties, was obtained without bleaching.
For the performance tests, AOS was evaluated in several systems, together with some other surfactants, alcohol sulfate (AS),
alcohol ethoxy sulfate (AES), linear alkylbenzene sulfonate (LAS), and alpha-sulfo fatty acid methyl ester (a-SEMe). AOS was
one of the most useful surfactants for heavy duty powder detergents of low phosphate formulation because of its good detergency
and foaming power, rinsing property, and free flowing property. Thus, bright white heavy duty powder detergents, containing
8% of P2O5, were developed with AOS (nonbleached), AES, LAS, sodium pyrophosphate (TSPP), and some other ingredients, which have been
marketed in the household cleaning products field in Japan since 1976. 相似文献
15.
A comparison of the levels of unsaturation in α-olefin sulfonates (AOS) and related derivatives determined by iodination,
bromination and hydrogenation techniques showed that quantitative hydrogenation is the only method having wide applicatbility.
Although halogenation methods frequently give results in agreement with hydrogenation data, they can show variations with
reaction time and composition of the sample. Unsaturation in sulfonate methyl esters could not be determined by halogenation.
The amount of †1-isomer in alkene sulfonate sodium salts determined by oxidative cleavage with periodate-permanganate was always low compared
to that determined by NMR. Oxidative cleavage of the sulfonate methyl esters gave †1-isomer levels in agreement with NMR results. 相似文献
16.
脂肪酸甲酯制备表面活性剂的研究与生产现状 总被引:3,自引:0,他引:3
生物柴油的迅猛发展使得脂肪酸甲酯作为重要化工原材料引起了广泛关注,并为其进一步开发应用提供了良好的机会和广阔的发展空间。本文论述了以脂肪酸甲酯为原料生产的各类可生物降解的表面活性剂,并对环氧乙烷加成物、脂肪酸甲酯α-磺酸钠、脂肪酸蔗糖酯等产品的性能、研究现状及目前企业生产概况等进行了重点介绍。 相似文献
17.
报道了在没有有机溶剂加氯仿的条件下,烷基苯磺酸盐和烷基磺酸盐(AS)测定方法的进展情况。烷基苯磺酸盐和AS与钙盐经沉淀,然后经过过滤分离。通过这个过程,它们和体系中的无机含硫化合物分离。被分离物中的硫含量通过电感耦合等离子体原子发射光谱(ICP-AES)测定。这样可以测定总的阴离子表面活性剂的含量。AS通过高压水解,未水解的烷基苯磺酸盐用同样的方法测定。烷基苯磺酸盐、AS、磷酸盐、硅酸盐、硫酸盐和 相似文献
18.
直链烷基苯磺酸是一种重要的阴离子表面活性剂,由其合成的直链烷基苯磺酸盐是价格低廉的表面活性剂之一,广泛应用于洗涤和三次采油等领域。以某煤制油企业的工业混合烯烃生产的直链烷基苯为原料,在微通道反应器中连续合成直链烷基苯磺酸,考察磺化温度、原料摩尔比以及磺化剂浓度等工艺条件对磺酸产物的影响规律,并与纯十六烷基苯磺化规律进行对比。研究发现混合直链烷基苯磺化过程中各个工艺条件对产品收率的影响较大。在反应温度为50℃,SO3与LAB摩尔比为1.0∶1,停留时间为5.09 s条件下,最终产品中活性物含量可达到94.5%(质量)。同时,设计并搭建了微反应器小试平台,实现连续合成混合烷基苯磺酸盐,磺酸盐产品收率在90%以上,可为该工艺的工业应用提供技术支持。 相似文献
19.
Akihiko Kawauchi 《Journal of the American Oil Chemists' Society》1997,74(7):787-792
This paper reports the development of a method for measuring alkylbenzene sulfonates and alkyl sulfates (AS) without requiring
the use of chlorinated organic solvents, such as chloroform. Alkylbenzene sulfonates and AS are precipitated with calcium
and then isolated by filtration. Through this filtration process, they are separated from inorganic sulfur compounds. After
the precipitate is prepared, the level of sulfur is measured by inductively coupled plasma atomic emission spectrometry (ICP-AES)
to determine the total anionic surfactant level. Separately, AS are hydrolyzed in an autoclave, and the level of alkylbenzene
sulfonates is then measured in the same manner. By using the autoclave, a safe and rapid hydrolysis step has been achieved.
In addition to alkylbenzene sulfonates and AS, phosphate, silicate, sulfate, and zeolite can be determined with this sample
preparation. This sample preparation procedure was investigated by ICP-AES and was confirmed applicable for simultaneous measurements
of alkylbenzene sulfonates, AS, phosphate, silicate, sulfate, and zeolite without using organic solvents. Relative standard
deviation for the analysis is less than 1.7%, recovery is more than 99.0%, and the calibration curve gives a correlation coefficient
of R=1.000. The detection limit of this method for alkylbenzene sulfonates and AS is 0.6%, for zeolite, 0.04%, for phosphate,
0.4%, for silicate, 0.1%, and for sulfate, 0.2%, by weight in product. This method is applicable to various laundry detergent
products that contain the materials mentioned above and is 10 times faster than the six wet chemical methods normally used
to analyze these compounds. 相似文献
20.
对直链烷基苯磺酸异丙胺盐(HIPN)的表面张力、润湿力、乳化力、发泡能力等基本性能进行研究,并与洗涤剂常用阴离子表面活性剂直链烷基苯磺酸钠(LAS)、脂肪醇聚氧乙烯醚硫酸钠(AES)和α-烯基磺酸钠(AOS)进行了对比,研究了HIPN在手洗餐具洗涤剂配方中的表现。结果表明,在餐具洗涤剂中HIPN具有优异的增稠性能,能全部代替或者部分代替LAS和AES,实现和AOS复配的低成本无二烷配方。 相似文献