Combustion Study of Different Transitional Metal Oxide based on
AN/MgAl Composites Gas Generators

Камунур, К.; Jandosov, J.; Абдулкаримова, Р. Г.; Hori, Keiichi; Yelemessova, Zh. K.

doi:10.18321/ectj682

Cited by 7 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The jumps in the TGA curve are due to changes in the internal energy of chemical bonds of the components in the composite sample, which are transformed as a result of these processes. 22 In alicyclic polyimides, first of all, thermal destruction of the tricyclodecene imide fragment occurs (with the decomposition onset temperature T = 380°C, in air) with the formation of maleimide and benzene or its derivatives. At temperatures above 460°C, deeper destructive processes occur, accompanied by the release of CO, CO 2 , H 2 O and H 2 .…”

Section: Resultsmentioning

confidence: 99%

Compositions of Arylalicyclic Copolyimide with Alkylated Monthmorillonite

Umerzakova,

Jumadilov,

Kondaurov

et al. 2023

ChChT

View full text Add to dashboard Cite

The results of studies on the preparation and study of the properties of composite materials based on compositions of arylalicyclic copolyimide and alkylated montmorillonite (AMM) modified with polyethylene glycol to increase the affinity of a natural mineral to polymer matrix are presented in the work. It was found that an increase in the compatibility of composition’s components is due to the addition to copolyimide solution of previously prepared mixture of alkylated montmorillonite in 5 % and 2 % polyethylene glycol solution in methylpyrrolidone. Based on IR-spectroscopy of the obtained mixtures and literature data, an assumption about specified composition mechanism was made. Compounds of copolyimide compositions with modified montmorillonite were determined. Found that the total content of alkylated montmorillonite and polyethylene glycol should not exceed 12.5 wt. % in the case of copolyimide – 1 wt. % and in case of copolyimide-2 – 4 wt. %. The optimal conditions for obtaining on their basis transparent composite films with a smooth surface by a mechanical mixing method are found. Their basic thermodestructive and mechanical properties were determined. It was shown that the materials have high thermodestructive and strength properties: the temperature of decomposition onset is 409-421°C, the tensile strength is in the range of 140-168 MPa. The best thermodestructive properties and tensile strength are possessed by films obtained from ternary mixtures of the initial composition 87.5 SPI1 + 7 PEG + 5.5 AMM and 97 SPI2 + 2 PEG + 1 AMM, while the elasticity of the material remained at an acceptable level.

show abstract

Section: Resultsmentioning

confidence: 99%

Compositions of Arylalicyclic Copolyimide with Alkylated Monthmorillonite

Umerzakova,

Jumadilov,

Kondaurov

et al. 2023

ChChT

View full text Add to dashboard Cite

show abstract

“…Various adsorbents, such as clays [ 21 , 22 , 23 ], functionalized magnetic chitosan nanoparticles [ 24 , 25 , 26 ], carbon adsorbents [ 27 , 28 , 29 , 30 ], biosorbents [ 31 , 32 , 33 ], hydrogels [ 34 , 35 , 36 , 37 , 38 ], and ion exchangers [ 39 , 40 , 41 , 42 ], can be used to recover various metal ions from aqueous solutions. The recovered metals have wide applications in catalysis, pyrotechnics, coal chemistry, and other fields [ 43 , 44 , 45 , 46 , 47 , 48 ]. However, the practical application of recently developed polymeric sorbents has been limited [ 49 , 50 , 51 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers

Jumadilov,

Khimersen,

Haponiuk

et al. 2024

Polymers

View full text Add to dashboard Cite

The growing demand for rare earth elements (REE) requires the search for economically viable materials to efficiently recover REE from various solutions. Our research aims to investigate the potential of using a combination of the ion exchangers Lewatit CNP LF (in H+ form) and AV-17-8 (in OH− form) as an interpolymer system, “Lewatit CNP LF@AV-17-8” (X:Y), with varying mass ratios of X:Y to enhance the sorption efficiency of lutetium ions from nitrate solution. During the study, we used a range of analytical methodologies, including gravimetry, ultraviolet-visible (UV-VIS) spectroscopy, and inductively coupled plasma optical emission spectroscopy (ICP-OES). Our findings demonstrate that the interpolymer system “Lewatit CNP LF@AV-17-8” (X:Y), with a mass ratio of 4:2, exhibited a significantly enhanced sorption rate of Lu3+ ions (42%) compared to the individual Lewatit CNP LF (6:0) (25%) and the individual AV-17-8 (0:6) (21%) over a 48 h period. Moreover, this interpolymer system has demonstrated notable conformity to the Freundlich adsorption model, highlighting its performance as an effective sorbent for lutetium (III) ions. Notably, our study presents a novel utilization of the interpolymer system “Lewatit CNP LF@AV-17-8” (4:2), with an adsorption capacity of 221.05 mg/g, to enhance the recovery of lutetium ions. The research findings demonstrate its potential for enhancing the recovery of REE.

show abstract

“…Of these, sorption methods have recently gained the lead, since they are more environmentally friendly and involve fewer technological cycles [ 17 ]. These adsorption techniques use diverse materials, such as biological materials, activated carbons, and activated polymers, which have recently aroused increased interest in the recovery of various metals from aqueous media [ 18 , 19 , 20 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Selective Sorption of Cerium Ions from Uranium-Containing Solutions by Remotely Activated Ion Exchangers

et al. 2023

View full text Add to dashboard Cite

This study investigated the effect of the remote activation of the ion exchangers Amberlite IR120 (H+ form) and AV-17-8 (OH− form) in aqueous media to increase the sorption activity of the interpolymer system “Amberlite IR120H:AV-17-8” (X:Y, molar ratio of ionic groups) towards cerium ions from uranium-containing solutions. The sorption properties of the above-mentioned interpolymer system with molar ratios X:Y of 6:0, 5:1, 4:2, 3:3, 2:4, 1:5, and 0:6 were studied using the methods of conductometry, gravimetry, and inductively coupled plasma–optical emission spectrometry. The presented research revealed the dependence of the sorption activity of the interpolymer system “Amberlite IR120H:AV-17-8” (X:Y) on the acidity of the solution. At pH 2.0, the highest cerium ion sorption degree from the model solution (containing both cerium and uranium ions) by the interpolymer system “Amberlite IR120H:AV-17-8” (4:2) was 56% after 48 h of interaction, whereas the cerium ion sorption degrees by raw Amberlite IR120H (6:0) and raw AV-17-8 (0:6) were 30% and 0%, respectively. The increased sorption ability of the interpolymer system “Amberlite IR120H:AV-17-8” (4:2) might be associated with the achievement of the highest ionization degree by this system remotely activated in an aqueous medium. Moreover, the cerium ion desorption study demonstrated a 60% degree of desorption using 2M nitric acid as a desorbing agent (eluent). The obtained results demonstrate the potential of using the remote interaction effect for the activation of the ion exchangers in aqueous media as an interpolymer system for increased cerium ion sorption from uranium-containing solutions.

show abstract

Combustion Study of Different Transitional Metal Oxide based on AN/MgAl Composites Gas Generators

Cited by 7 publications

References 16 publications

Compositions of Arylalicyclic Copolyimide with Alkylated Monthmorillonite

Compositions of Arylalicyclic Copolyimide with Alkylated Monthmorillonite

Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers

Selective Sorption of Cerium Ions from Uranium-Containing Solutions by Remotely Activated Ion Exchangers

Contact Info

Product

Resources

About