Spectroscopic and Thermal Studies of [Cr2(NH2)2(H2O)2(SO4)2]·2H2O,[Cr(NCO)3(H2O)]·3H2O and [Fe O(OH)]·0.2H2O Compounds Formed by the Reactions of Urea with Cr2(SO4)3, Cr(CH3COO)3AND Fe2(SO4)3

Sadeek, Sadeek A.; Refat, Moamen S.; Teleb, Said M.

doi:10.5012/jkcs.2004.48.4.358

Cited by 8 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies on the nature of the reaction of urea with metal ions at high temperature are very rare in the literature, and the available publications describe an interesting feature, the reaction products depend not only on the type of metal ions but also on the metal salt used in these reaction [16][17][18][19][20][21]. The present study was undertaken to investigate the nature of the reaction products obtained during the reaction of urea with lanthanide (III) ions LnX 3 .nH 2 O ( Ln= Ce 3+ , Eu 3+ , Dy 3+ and Ho 3+ ; X -= Clor NO 3 -) in aqueous solution at ~ 85 0 C. The reaction products were isolated as solids, and characterized by elemental analysis, infrared spectra, volumetric and gravimetric analysis to determine the amount of carbonate and metal percent.…”

Section: Introductionmentioning

confidence: 99%

Study of Temperature Effect on Reaction Product of Some Lanthanide Metal Ions With Urea

Hussein

2022

JWSM

View full text Add to dashboard Cite

The Lanthanide carbonates, Ln2(CO3)3.nH2O of LnX3.nH2O (Ln= Dysprosium Dy, Holmium Ho, Cerium Ce and Europium Eu ; X-= Cl- or NO3-, n = 4-6) have been prepared by a novel synthetic method involving the reaction of aqueous solutions of the lanthanide metal ions with urea at ~850C for two hours. The reaction products were characterized via elemental analysis technique , infrared spectroscopy , volumetric and gravimetric analysis method. General reaction equations describing the formation of lanthanide carbonate compounds were proposed.

show abstract

Section: Introductionmentioning

confidence: 99%

Study of Temperature Effect on Reaction Product of Some Lanthanide Metal Ions With Urea

Hussein

2022

JWSM

View full text Add to dashboard Cite

show abstract

Unusual route for preparation of manganese(II), cobalt(II), zinc(II) and cadmium(II) carbonate compounds: synthesis and spectroscopic characterizations

Refat

Al-Qahtani

2011

Bull Mater Sci

View full text Add to dashboard Cite

The manganese(II) carbonate, MnCO 3 ⋅H 2 O, cobalt(II) carbonate, CoCO 3 ⋅4H 2 O, zinc(II) carbonate, ZnCO 3 and cadmium(II) carbonate, CdCO 3 , respectively, were synthesis by a new simple unusual route during the reaction of aqueous solutions of MnX 2 , CoX 2 , ZnX 2 and CdX 2 , where (X = Br -and ClO -4 ) with urea at high temperature within ~ 90°C for 6 h. The infrared spectra of the reaction products clearly indicate the absence of the bands of urea, but show the characteristic bands of ionic carbonate, CO 2 3 -. A general mechanism describing the preparation of manganese(II), cobalt(II), zinc(II) and cadmium(II) carbonate compounds are discussed.

show abstract

Infrared spectra, Raman laser, XRD, DSC/TGA and SEM investigations on the preparations of selenium metal, (Sb2O3, Ga2O3, SnO and HgO) oxides and lead carbonate with pure grade using acetamide precursors

Refat

Elsabawy

2011

Bull Mater Sci

View full text Add to dashboard Cite

Ga 2 O 3 , Se metal, SnO, Sb 2 O 3 , HgO and PbCO 3 are formed upon the reaction of acetamide aqueous solutions with Ga(NO 3 ) 3 , SeO 2 , SnCl 2 , SbCl 3 , HgCl 2 and Pb(NO 3 ) 2 , respectively, at 90°C. Different amorphous or crystalline phases can be obtained depending upon the experimental conditions (molar ratios, metal salts and temperature). The chemical mechanisms for the formations of this metal, oxides or carbonate are discussed and the X-ray diffraction, scanning electron microscopy (SEM) and atomic force microscope (AFM) are described. The type of metal ions plays an important role in the decomposition of acetamide, leading to the formation of solid stable (metal, oxides or carbonate), soluble and gases species. These new precursors are more stable preventing the rapid precipitation of metal, oxides or carbonate. Furthermore, this route allows the formation of pure compounds in solutions.

show abstract

Spectroscopic and Thermal Studies of [Cr₂(NH₂)₂(H₂O)₂(SO₄)₂]·2H₂O,[Cr(NCO)₃(H₂O)]·3H₂O and [Fe O(OH)]·0.2_H2O Compounds Formed by the Reactions of Urea with Cr₂(SO₄)₃, Cr(CH₃COO)₃AND Fe₂(SO₄)₃

Cited by 8 publications

References 23 publications

Study of Temperature Effect on Reaction Product of Some Lanthanide Metal Ions With Urea

Study of Temperature Effect on Reaction Product of Some Lanthanide Metal Ions With Urea

Unusual route for preparation of manganese(II), cobalt(II), zinc(II) and cadmium(II) carbonate compounds: synthesis and spectroscopic characterizations

Infrared spectra, Raman laser, XRD, DSC/TGA and SEM investigations on the preparations of selenium metal, (Sb2O3, Ga2O3, SnO and HgO) oxides and lead carbonate with pure grade using acetamide precursors

Contact Info

Product

Resources

About