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Properties of ammonium
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N-Guanylurea dinitramide (GUDN), also known as FOX-12, is indeed a fascinating organic dinitramide salt with high insensitivity and good thermal stability. It shows great promise for use in next-generation insensitive munitions. In this study, GUDN was synthesized through the nitration reaction of ammonium sulfamate salt with an acid mixture (HNO3/H2SO4) and guanylurea salts in water.
9p
visergeyne
18-06-2024
0
0
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In this study, the effect of nanoclay content on the fire resistance performances of intumescent coatings using ammonium polyphosphate (APP), pentaerythritol (PER), and melamine (MEL) is investigated. The epoxy and nanoclay-based intumescent coatings were developed to serve as coatings for steel substrates.
8p
viambani
18-06-2024
2
1
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This study investigated the effect of graphene content on intumescent coating properties. Intumescent coatings contained Plextol R4152 as a binder, APP-PER-MEL as a flame retardant additive system, TiO2, Al(OH)3 as fillers, and other additive. The fire resistance test and furnace test were conducted. TGA, DSC, and SEM were used to assess the coating and char layers. The water resistance and mechanical properties of the coatings were examined.
12p
dianmotminh02
03-05-2024
2
1
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N-doped TiO2 nanomaterials were prepared with the sol-gel method. The structure and properties of the materials were characterized by using XRD, UV-Vis, SEM, EDX, and IR techniques. The optimal amount of ammonium chloride in the mixture for doping is 600 mg. The optical absorption edge of N-TiO2 displays a redshift, and a long tail occurs in the presence of nitrogen in the material.
6p
vispiderman
15-06-2023
4
2
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This paper studies the ability to treat ammonium in wastewater in pig farm by magnesium precipitation method. The research model includes 1 deposit tank, a reaction tank with dimensions of 30x30x40 cm and a stirring device.
8p
viironman
02-06-2023
4
1
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Hylocereus polyrhizus, known as red dragon fruit provides a betacyanin pigment source, which is not only concentrated in the flesh but also present in the peel with high content. Betacyanins are beautiful red-violet pigments used as food additives and stable in a wide pH range from 3 to 6. However, the stability of betacyanins is affected by heat, which causes discoloration.
9p
vicedric
08-02-2023
7
3
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The synthesis and polymerization of a novel diamine monomer, 1,1-(sulfonylbis (4,1-phenylene)) bis (thiourea) (SPT), with various aromatic dianhydrides were carried out. In addition, the fabrication of poly(thiourea-sulfone-imide)s (PTSIs) with noble thermal properties and flame retardancy was conducted. The structures of SPT and polymers were characterized by FT-IR, 1 H NMR, and 13 C NMR spectroscopy along with elemental analysis. Crystallinity, organosolubility, inherent viscosity, and gel permeation chromatographic measurements were taken as well.
13p
langthannam
29-12-2021
10
1
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Grafting of acrylamide (AAm) onto kappa-carrageenan (KC) was carried out using microwave irradiation in the presence of ammonium persulfate (APS) as initiator. The effect of reaction variables including the concentration of APS, AAm, and KC; time duration; and microwave power was studied. Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM) were carried out to characterize the graft copolymer.
13p
langthannam
29-12-2021
8
0
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This study presents the synthesis of glucose-based surfactants including quaternary ammonium salts. Their surface properties and influence on the soil environment were investigated. The synthesized quaternary ammonium chlorides of glucose-based ester exhibited good surface tension reduction properties and formed stable foam in contact with water. The results showed that quaternary ester ammonium salts affect the activation of metals (nickel and cadmium) from the soil matrix after their introduction into the soil environment. This phenomenon can increase the bioavailability of these metals.
15p
tudichquannguyet
29-11-2021
5
1
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Quaternary ammonium salts are a group of compounds with diverse biological properties, the most important of which are their antiviral, antibacterial, and antifungal activities. The quaternization reactions of 5'-O-tosyl derivatives of uridine and thymidine with triethylamine, trimethylamine, 4-(N ,N -dimethylamino)pyridine, 2-methylpyridine, and pyridine are described in this article.
15p
tudichquannguyet
29-11-2021
6
1
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Influence of sintering additives on the porous structure and mechanical properties of porous alumina
The aim of the present work is to investigate and to compare the influence of the two sintering additives Cr2O3 and TiO2 on the porous structure and the mechanical properties of the sintered porous alumina. Alumina based porous ceramics were fabricated by sacrificial template technique via powder metallurgy route from alumina powder using ammonium bicarbonate (NH4)HCO3 as the pore former. T
5p
cothumenhmong11
10-05-2021
10
2
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This study aims to investigate the adsorption capacity of ammonium NH4 + , nitrite NO2 - and nitrate NO3 - onto rice husk biochar (RHB) obtained from 550 °C pyrolysis temperature in the context of using low-cost absorbent for recirculating aquaculture system (RAS). Raw RHB at its original size 5–8 mm has been chosen for testing its adsorption capacity as well as several key material properties (pHPZC, surface area, and elemental analysis).
15p
nguaconbaynhay11
16-04-2021
12
2
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Objectives of this dissertation: Develop the optimal preparation procedure of modified biochar and activated carbon derived from an agricultural byproduct, such as corncob wastes; Investigate the physical and chemical properties of modified biochar and activated carbon; apply modified biochar and activated carbon in removal of ammonium from synthesised and real water under batch and column experiments.
28p
capheviahe27
23-02-2021
17
3
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In recent decades, incorporating polypropylene (PP) within fame retardants has proved to be an effective method of improving the thermal stabilities of PP, but too much adversely affect the mechanical properties of this polymer materials.
12p
vijiraiya2711
27-05-2020
9
1
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Polyaniline (PANI) was synthesized chemically in an acidic medium in the presence of ammonium persulfate (APS) as an oxidizing agent. PANI/montmorillonite nano-composites were prepared in the presence of various amounts of modified clay (from 1 to 5 wt.%) by solution casting method.
8p
tocectocec
25-05-2020
7
2
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In many parts of the world food security is being affected due to declining quality and/or quantity of the soil resource base and climate change. In this context, farming with zeolites has drawn attention. Zeolites are natural aluminosilicates present in rocks in different part of the world. Use of zeolite has gained a momentum in the recent past owing to multitude of benefits accrued from them. Clinoptilolite Zeolites are useful in agriculture because of their large porosity, cation exchange capacity and selectivity for ammonium and potassium cations.
23p
nguaconbaynhay3
07-02-2020
28
2
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Poly house experiment was carried out at Zonal Agricultural and Horticultural Research Station (ZAHRS), Navile, Shivamogga during kharif2016 to study the response of tomato fruit to different sources and levels of calcium. Three sources of calcium [CaCl2, CaNO3 and calcium ammonium nitrate (CAN)] with three levels each (0.20, 0.50 and 0.80%) were applied as a foliar spray in a Complete Randomized Design (CRD) with three replications and ten treatments.
9p
cothumenhmong1
08-12-2019
16
0
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The soil potassium (K) test methodology is under increased evaluation due to the soil sample drying effect, temporal variations of test results and inconsistent crop response to applied K fertilizers. Ten on-farm trials were conducted in 2014 in eastern North Dakota to determine the corn response to different K-fertilizer rates and to assess the variation of soil K test levels between air-dried (KDry) and field moist (KMoist) soil samples during the corn growing season. Significant differences were observe d between KDry and KMoist soil K test results.
13p
mentospurefresh
29-11-2019
18
0
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Fibrous properties of rayon has been modified through synthesis of graft copolymers of rayon with acrylonitrile (AN) by chemical method using ceric ammonium nitrate (CAN/HNO3) as a redox initiator and gamma radiation mutual method. Percentage of grafting (Pg) was determined as a function of initiator concentration, monomer concentration, irradiation dose, temperature, time of reaction and the amount of water. Maximum percentage of grafting (160.01%) using CAN/HNO3 was obtained at [CAN] = 22.80 • 103 mol/L, [HNO3] = 112.68 • 102 mol/L and [AN] = 114.
11p
kethamoi1
17-11-2019
17
1
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In present paper, ADU has been produced via both the routes. Variation of uranium recovery and crystal structure and composition of ADU with progress in precipitation reaction has been studied with special attention on first appearance of the precipitate Further, ADU produced by two routes have been calcined to UO3, then reduced to UO2 and hydroflorinated to UF4. Effect of two different process routes of ADU precipitation on the characteristics of ADU, UO3, UO2 and UF4 were studied here.
8p
minhxaminhyeu4
26-06-2019
30
0
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