Polyfunctional imidazoles: XIV. 4-sulfonyl-5-formyl-1H-imidazoles

Grozav, A. N.; Chornous, V. A.; Dorokhov, V. I.; Vovk, M. V.

doi:10.1134/s1070428017100104

Cited by 2 publications

(2 citation statements)

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“…1664 cm −1 corresponds to the stretching vibration absorption peak of CO in AMPS, 1041 cm −1 corresponds to the characteristic absorption peak of SO 3 − in AMPS, the peak near 1558 and 1454 cm −1 is the skeleton vibration peak of imidazole ring, and 1307 cm −1 is the stretching vibration characteristic absorption peak of CN bond in imidazole ring. 1626 cm −1 is the characteristic absorption peak of CN double bond in imidazole ring 52 . 810 and 774 cm −1 belong to the characteristic absorption peaks of the out‐of‐plane bending vibration of the CH bond on the imidazole ring, and the peaks around 1402 cm −1 are AMPS, APEG, and methylene variable angle vibration absorption peaks in ionic liquids.…”

Section: Resultsmentioning

confidence: 99%

“…1626 cm À1 is the characteristic absorption peak of C N double bond in imidazole ring. 52 810 and 774 cm À1 belong to the characteristic absorption peaks of the outof-plane bending vibration of the C H bond on the imidazole ring, and the peaks around 1402 cm À1 are AMPS, APEG, and methylene variable angle vibration absorption peaks in ionic liquids. There is no characteristic peak of C C double bond, and the characteristic peaks of AMPS, APEG, and 1-vinyl-3-ethyl iminazole bromide salt are obvious.…”

Section: Fourier Transform Infrared Sepctroscopy Analysismentioning

confidence: 99%

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Synthesis and properties of a novel ionic liquid copolymer shale inhibitor

Bai,

Chen,

et al. 2023

J of Applied Polymer Sci

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As oil reserves in shallow wells continue to deplete, the drilling industry must shift its focus toward extracting oil from deeper and more complex formations. Water‐based drilling fluid inhibitors are currently limited in their ability to withstand high temperatures. In the current work, for the first time, the application of 1‐vinyl‐3‐ethylimidazolium bromide salt‐allyl alcohol polyoxyethylene ether‐2‐acrylamide‐2‐methylpropanesulfonic acid (PIAA) as the shale inhibitor is reported. The incorporation of ionic liquids has made PIAA promising to be an effective shale inhibitor for high‐temperature‐tolerant water‐based drilling fluids. The high‐temperature resistance (300°C) of PIAA was verified through thermogravimetric test. Through mud ball, shale rolling recovery, and linear swelling experiments, we found that PIAA yielded the lowest swelling rate (27.3%) in the 24‐h linear swelling rate test, as compared to HMA‐15 (46.1%) and FA‐367 (31.2%). This confirmed the superior corrosion inhibition performance of PIAA. In addition, we investigated the inhibition mechanism using Zeta potential and other tests. Bentonite inhibition can be achieved through the coating of bentonite particles by PIAA, which effectively plugs shale pores, neutralizes negative charges on the surface of bentonite particles, and adsorbs them onto particle surfaces. Overall, PIAA has excellent high‐temperature resistance and inhibition properties.

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Section: Resultsmentioning

confidence: 99%

Section: Fourier Transform Infrared Sepctroscopy Analysismentioning

confidence: 99%