Study the rheological properties of waxy oil with modified pour point depressants for the South Turgai oil field in Kazakhstan

Kozhabekov, S. S.; Zhubanov, A. A.; Toktarbay, Zh.

doi:10.2516/ogst/2019004

Cited by 15 publications

(10 citation statements)

References 21 publications

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“…Heavy metal ions have been detected using hydrogels in extensive investigations; however, few experiments have been undertaken to remove heavy metal ions from specified systems. Furthermore, polymeric hydrogels are another potential material for removing heavy metal ions in a controlled manner in response to changes in external stimuli such as temperature, pH, electric field, and chemicals [ 39 ].…”

Section: The Removal Of Hazardous Heavy Metal Ionsmentioning

confidence: 99%

A Short Review on the N,N-Dimethylacrylamide-Based Hydrogels

Akhmetzhan

Myrzakhmetova

Amangeldi

et al. 2021

Gels

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Scientists have been encouraged to find different methods for removing harmful heavy metal ions and dyes from bodies of water. The adsorption technique offers promising outcomes for heavy metal ion removal and is simple to run on a large scale, making it appropriate for practical applications. Many adsorbent hydrogels have been developed and reported, comprising N,N-dimethylacrylamide (DMAA)-based hydrogels, which have attracted a lot of interest due to their reusability, simplicity of synthesis, and processing. DMAA hydrogels are also a suitable choice for self-healing materials and materials with good mechanical properties. This review work discusses the recent studies of DMAA-based hydrogels such as hydrogels for dye removal and the removal of hazardous heavy metal ions from water. Furthermore, there are also references about their conduct for self-healing materials and for enhancing mechanical properties.

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Section: The Removal Of Hazardous Heavy Metal Ionsmentioning

confidence: 99%

A Short Review on the N,N-Dimethylacrylamide-Based Hydrogels

Akhmetzhan

Myrzakhmetova

Amangeldi

et al. 2021

Gels

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“…It can be seen from the obtained micrographs of Akshabulak oil that at the same temperature (0°C), wax crystals with the addition of an PPD modified with butylamine have a shape and size different from the crystals of wax of a copolymer of non-amines modified maleic anhydride with linear α-olefin and is more different from crystals wax in oil without PPDs. 1 2 3…”

Section: R1-c16h33 R2-c18h37 C16h33 C6h13 C4h9 C6h5ch2mentioning

confidence: 99%

Modification of Copolymers Based on Olefin and Maleic Anhydride as Pour Point Depressant for Waxy Oils

Kozhabekov

Zhubanov

Makhmetova

et al. 2021

Series Chemistry and Technology

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In this work, we investigated a modification of a copolymer based on α-olefin (octadecene-1) (ODC) and maleic anhydride (MA) synthesized by the method of initiated radical polymerization. In the studies carried out, it was revealed that of all the synthesized copolymers based on maleic anhydride, the copolymer with α-octadecene was the most effective copolymer in reducing the viscosity of oil and TPT. In this work, a copolymer based on maleic anhydride and octadecene-1 (ODC – MA) was modified with primary amines – butylamine (BA), hexylamine (HA), hexadecylamine (HDA), octadecylamine (ODA), benzylamine (BzA). The copolymer was modified in a xylene solution with a Dean – Stark packing; the ratio of the ODC – MA copolymer to amines was 1:1.2 mol. Tololsulfonic acid (TSC) 0.5 wt% was used as a catalyst. Synthesis temperature 140°C, time 8 hours. The degree of completion of the reaction was evaluated by the amount of water formed in the Dean Stark packing. Modified copolymers ODC – MA with amines (ODC – MA – BA, ODC – MA – HA, ODC – MA – HDA, ODC – MA – ODA, ODC – MA – BzA) were characterized by Fourier IR spectroscopy and 1H and 13C NMR spectroscopy, which indicates the transformation of the original anhydride rings into imide ones. Modified copolymers were tested on waxy oil as depressants. Moreover, all modified copolymers exhibit the properties of depressants – they reduce the viscosity and TPT of oil relative to oil without an PPD. The morphology of waxy crystals formed in oil during a decrease in temperature was determined by microscopy; it was shown that modified waxy crystals of small sizes are formed compared to the original oil without PPDs, which indicates the dispersing effect of modified copolymers based on ODC – MA.

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“…тұқымдасы Қазақстан Республикасы аумағында өсетін өсімдіктер қатарына жатады. Зерттеу нысаны ретінде -Onagraceae L тұқымдасының кейбір тектес Circaea L. алынды [7]. Onagraceae L. тұқымдасының кейбір тектес Circaea L. тұқымдасы дәрілік, бояғыш және тұтынатын тағам өсімдіктері ретінде қолданылады.…”

Section: кіріспеunclassified

Research of polyphenolic compounds of Circaea lutetiana l.

Kozhantayeva¹,

Rakhmadiyeva²

2020

KazNU Chem Bull

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One of the renewable sources of plant material is the plants of the Onagraceae L. family, growing on the territory of the Republic of Kazakhstan. The plant Circaea lutetiana L., (bipartite of Paris) of the genus Circaea L., (bipartite) of the family Onagraceae L., (fireweed), which belongs to medicinal, dyeing and food plants, was taken as an object of study. The presence of polyphenolic compounds was detected by paper chromatography in an ascending manner in solvent systems: butanol-acetic acid-water (BAW) (41:5), (40:12.5:29), 2%, 15% acetic acid with specific developers: diazotized sulfanilic acid (DZSA), diazotized para-nitroaniline (DZPNA), ammonia vapors, aluminum chloride (AlCl3), ferric chloride (FeCl3), ammonium-iron alum (AIA), vanillin reagent in sulfuric acid. The content of gallic and ferulic acids was determined in the roots and fruits of the plant, and ellagic acid in the leaves and fruits. Flavonoids and tannins of the hydrolyzable type were found in all plant organs, the largest number of them in fruits and the smallest in roots. Using the method of spectrophotometry in all plant organs, the content of flavonoids in terms of State standard sample (SSS) quercetin was determined (roots 0.96%, stems 2.03%, leaves 2.74%, fruits 3.67%), the content of tannins in terms of tannin (roots 0.005%, stems 1.19%, leaves 3.69%, fruits 5.99%).

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Study the rheological properties of waxy oil with modified pour point depressants for the South Turgai oil field in Kazakhstan

Cited by 15 publications

References 21 publications

A Short Review on the N,N-Dimethylacrylamide-Based Hydrogels

A Short Review on the N,N-Dimethylacrylamide-Based Hydrogels

Modification of Copolymers Based on Olefin and Maleic Anhydride as Pour Point Depressant for Waxy Oils

Research of polyphenolic compounds of Circaea lutetiana l.

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