scholarly journals Effects of dodecyl benzene sulfonic acid between hydrate particles and droplets

2021 ◽  
Vol 2076 (1) ◽  
pp. 012053
Author(s):  
Shuai Zhao ◽  
Mingzhong Li ◽  
Kaili Geng ◽  
Chenwei Liu ◽  
Zhe Wei ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Sulfonic Acid ◽  
Mass Concentration ◽  
Mechanical Force ◽  
Experimental Results ◽  
Benzene Sulfonic Acid ◽  
Dodecyl Benzene Sulfonic Acid ◽  
Different Temperatures ◽  
Two Temperatures ◽  
Change Trend

Abstract In order to understand the effect of Dodecyl benzene sulfonic acid (DBSA) on the aggregation mechanism of hydrate, the interaction between cyclopentane (CyC5) hydrate particles and droplets under different concentrations of DBSA and different temperatures was measured by micro mechanical force device (MMF). The mass concentration range of DBSA used in the experiment is 0.0001% ~ 0.05%, and the experimental temperature is 1°C and 5°C, respectively. The experimental results show that DBSA can effectively reduce the interfacial tension between oil and water, thus reducing the adhesion between hydrate particles and droplets and preventing hydrate aggregation. In the experimental concentration range, the higher the concentration of DBSA, the stronger the ability to reduce the adhesion. The adhesion can be reduced by 97.56% at 1°C and 90.95% at 5°C. The change trend of the adhesion with the concentration is almost the same at the two temperatures.

scholarly journals Effect of Rejuvenator Containing Dodecyl Benzene Sulfonic Acid (DBSA) on Physical Properties, Chemical Components, Colloidal Structure and Micro-Morphology of Aged Bitumen

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1476 ◽  
Author(s):  
Dongliang Kuang ◽  
Zhou Ye ◽  
Lifeng Yang ◽  
Ning Liu ◽  
Zaihong Lu ◽  
...  
Keyword(s):  
Thin Film ◽  
Physical Properties ◽  
Sulfonic Acid ◽  
Chemical Components ◽  
Structure Transformation ◽  
Colloidal Structure ◽  
Benzene Sulfonic Acid ◽  
Oven Test ◽  
Dodecyl Benzene Sulfonic Acid ◽  
Micro Morphology

DBSA was used as a solubilizer together with conventional rejuvenator (CR) to produce a solubilized rejuvenator (SR), two kinds of aged bitumen involving TFOT aged bitumen and PAV aged bitumen were obtained by thin film oven test (TFOT) and pressurized aging vessel (PAV), respectively. Effects of CR and SR on the physical properties, chemical components, colloidal structure and micro-morphology of TFOT aged bitumen and PAV aged bitumen were investigated. Testing results of physical properties and chemical components indicated that CR and SR can replenish aged bitumen with necessary aromatics, TFOT aged bitumen that chemical component variation deteriorates its physical properties. With regard to PAV aged bitumen, of which the performance attenuation lies in chemical components variation and colloidal structure transformation, even if the content of CR reached up to 10 wt %, the regenerated bitumen cannot meet the regeneration requirement yet due to its definite influence on colloidal structure transformation, comparatively, sulfonic group in SR can react with the superficial atoms of asphaltenes to reform a solvation layer to facilitate the colloidal structure transformation of PAV aged bitumen, performance and beelike structure of regenerated PAV aged with bitumen with 10 wt % SR were approximated to that of virgin bitumen.

scholarly journals Chemiresistive sensors based on Dodecyl benzene Sulfonic acid doped Polypyrrole and Reduced Graphene Oxide for nitrogen oxides

2021 ◽  
Vol 1204 (1) ◽  
pp. 012004
Author(s):  
Djamil Guettiche ◽  
Ahmed Mekki ◽  
Tighilt Fatma Zohra ◽  
Noureddine Ramdani ◽  
Rachid Mahmoud
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Indium Tin Oxide ◽  
Sulfonic Acid ◽  
Flexible Substrate ◽  
Structural Data ◽  
Strong Interactions ◽  
Benzene Sulfonic Acid ◽  
Reduced Graphene ◽  
Dodecyl Benzene Sulfonic Acid

Abstract A new series of polypyrrole doped with n-dodecylbenzene sulphonic acid/reduced graphene oxide (PPy-DBSA/rGO) nanocomposite was electrodeposited on Indium tin oxide coated Polyethylene terephthalate (ITO/PET) flexible substrate by electrochemical route using the chronoamperometric technique. As-prepared for testing of chemiresistive properties against the detection of nitrogen dioxide (NO2) vapors at room temperature. The sensitivity and reactivity of the composite toward NO2 was evaluated. The recorded morphological and structural data confirmed that the PPy-DBSA/rGO forms a homogeneous nanocomposite. The optimal NO2 sensing properties have been revealed by the PPy-DBSA/rGO in terms of response (43%), response time (30.25 s), the detection limit (1ppm), and reproducibility. Furthermore, Results showed that the doped by sulfonic acid improved both the sensitivity and the reactivity of our produced nanocomposite toward NO2. Due to the strong interactions between the NO2 gas molecules and the rGO was dramatically enhanced the electronic properties of these nanocomposites. These striking characteristics of the newly developed nanocomposites make them very suitable to be used as NO2 gas sensor.

Highly Sensitive Chemo-Resistive Ammonia Sensor Based on Dodecyl Benzene Sulfonic Acid Doped Polyaniline Thin Film

2015 ◽  
Vol 7 (3) ◽  
pp. 518-525 ◽  
Author(s):  
Jitendra Kumar ◽  
Md. Shahabuddin ◽  
Arun Singh ◽  
S. P. Singh ◽  
Parveen Saini ◽  
...  
Keyword(s):  
Thin Film ◽  
Sulfonic Acid ◽  
Ammonia Sensor ◽  
Benzene Sulfonic Acid ◽  
Highly Sensitive ◽  
Dodecyl Benzene Sulfonic Acid ◽  
Doped Polyaniline
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