Structural Isomerization and Cold Crystallization of Bis[1-(2-propyl)iminomethylnaphthalen-2-olato]nickel(II) by Thermal Analysis, X-ray Diffraction, and FT-IR

Zn2SiO4:Eu3+, Dy3+ phosphors have been prepared through the sol-gel process. X-ray diffraction (XRD), thermogravimetric and ddifferential thermal analysis (TG-DTA), FT-IR spectra and photoluminescence spectra were used to characterize the resulting phosphors. The results of XRD indicated that the phosphors crystallized completely at 1000oC. In Zn2SiO4:Eu3+,Dy3+ phosphors, the Eu3+ and Dy3+ show their characteristic red(613nm, 5D0-7F2), blue (481nm, 4F9/2–6H15/2) and yellow (577nm, 4F9/2–6H13/2) emissions.

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Synthesis, Characterization and Magnetism of Nanosized Copper Ferrite

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.368-372.604 ◽

2008 ◽

Vol 368-372 ◽

pp. 604-606 ◽

Cited By ~ 3

Author(s):

Wei Zhong Lv ◽

Zhong Kuang Luo ◽

Bo Liu ◽

Xiang Zhong Ren ◽

Hong Hua Cai ◽

...

Keyword(s):

Electron Microscopy ◽

Thermal Analysis ◽

Copper Ferrite ◽

Sonochemical Method ◽

Thermal Gravimetric ◽

X Ray Diffraction ◽

Scanning Calorimetry ◽

X Ray ◽

Ft Ir ◽

Scanning Electron

Copper ferrite powders were successfully synthesized by sonochemical method. The resultant powders were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), FT-IR, differential thermal analysis-thermal gravimetric (DTA-TG), differential scanning calorimetry (DSC) and VSM. The particle saturation magnetization (Ms) is 66 emu/g and an intrinsic coercive force (iHc) is 2100 Oe when the precursor calcined at 950 °C for 15 h.

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Comparison of FT-IR, Thermal Analysis and XRD for Determination of Products of Cement Hydration

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.168-170.518 ◽

2010 ◽

Vol 168-170 ◽

pp. 518-522 ◽

Cited By ~ 6

Author(s):

Zhi Hua Ou ◽

Bao Guo Ma ◽

Shou Wei Jian

Keyword(s):

Thermal Analysis ◽

Fourier Transform ◽

Cement Hydration ◽

Hydration Products ◽

X Ray Diffraction ◽

Cement Pastes ◽

X Ray ◽

Degree Of Hydration ◽

Ft Ir

Fourier Transform Infrared Spectroscopy (FT-IR), thermal analysis and X-Ray Diffraction (XRD) are commonly performed to study the hydration products in cement pastes. The three methods were compared in this frame to detect products of cement hydration at different ages, especially at early ages (before 24h ages). The results indicate from the present experiment that CH (Calcium hydroxide) can be detected by three methods at all ages; C-S-H can be distinguished by FT-IR at all ages; ettringite may be detected by FT-IR before 24h ages and by XRD at all ages; and monosulphate can be detected by FT-IR before 24h ages. The process of cement hydration, characterized by formation and development of some hydration products, can be clearly observed by three methods. FT-IR is suggested for detecting the major hydration products before 24h ages, FT-IR and XRD are suggested for detecting the major hydration products after 24h ages, and thermal analysis is suggested for analyzing the degree of hydration quantitatively.

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Synthesis, crystal structures and characterizations of three new copper(II) complexes including anti-inflammatory diclofenac

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229619001827 ◽

2019 ◽

Vol 75 (4) ◽

pp. 388-397 ◽

Cited By ~ 5

Author(s):

Sevim Hamamci Alisir ◽

Necmi Dege ◽

Recep Tapramaz

Keyword(s):

Thermal Analysis ◽

Ir Spectroscopy ◽

Magnetic Data ◽

X Ray Diffraction ◽

Paramagnetic Resonance ◽

X Ray ◽

Ft Ir ◽

Fourier Transform Ir ◽

Electron Paramagnetic ◽

Ft Ir Spectroscopy

Three new diclofenac-based copper(II) complexes, namely tetrakis{μ-2-[2-(2,6-dichloroanilino)phenyl]acetato-κ2 O:O′}bis(methanol-κO)copper(II), [Cu2(μ-dicl)4(CH3OH)2] (1), bis{2-[2-(2,6-dichloroanilino)phenyl]acetato-κ2 O,O′}bis(1-vinyl-1H-imidazole-κN 3)copper(II), [Cu(dicl)2(vim)2] (2), and bis{2-[2-(2,6-dichloroanilino)phenyl]acetato-κ2 O,O′}bis(1H-imidazole-κN 3)copper(II), [Cu(dicl)2(im)2] (3) [dicl is diclofenac (C14H10Cl2NO2), vim is 1-vinylimidazole (C5H6N2) and im is imidazole (C3H4N2)], have been synthesized and characterized by elemental analysis, FT–IR spectroscopy, thermal analysis and single-crystal X-ray diffraction. X-ray diffraction analysis shows that complex 1 consists of dimeric units in which the dicl ligand exhibits a bidentate syn,syn-μ2 coordination mode linking two copper(II) centres. Complexes 2 and 3 have mononuclear units with the general formula [Cu(dicl)2 L 2] (L is vim or im) in which the CuII ions are octahedrally coordinated by two L and two dicl chelating ligands. The L and dicl ligands both occupy the trans positions of the coordination octahedron. The different coordination modes of dicl in the title complexes were revealed by Fourier transform IR (FT–IR) spectroscopy. The spin matching between the copper(II) centres in the dimeric [Cu2(μ-dicl)4(CH3OH)2] units was also confirmed by magnetic data to be lower than the spin-only value and electron paramagnetic resonance (EPR) spectra. The thermal properties of the complexes were investigated by thermogravimetric (TG) and differential thermal analysis (DTA) techniques.

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Cold Crystallization in Bis[1-(3-methylphenyl)iminomethylnaphthalen-2-olato]nickel(II) Studied by Thermal Analysis and X-ray Diffraction

Chemistry Letters ◽

10.1246/cl.130409 ◽

2013 ◽

Vol 42 (9) ◽

pp. 1040-1042 ◽

Cited By ~ 5

Author(s):

Katsunori Iwase ◽

Hirohiko Houjou ◽

Yasuhisa Yamamura ◽

Kazuya Saito

Keyword(s):

Thermal Analysis ◽

Cold Crystallization ◽

X Ray Diffraction ◽

X Ray

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Preparation and Analysis of Kaolinite Intercalated by Potassium Acetate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.150-151.1220 ◽

2010 ◽

Vol 150-151 ◽

pp. 1220-1224

Author(s):

Xiao Man Du ◽

Qin Fu Liu ◽

Hong Fei Cheng

Keyword(s):

Thermal Analysis ◽

Electron Microscope ◽

Fourier Transformation ◽

Potassium Acetate ◽

Basal Spacing ◽

X Ray Diffraction ◽

Immersion Method ◽

X Ray ◽

Ft Ir ◽

Scanning Electron

The kaolinite-potassium acetate composite was prepared by the immersion method. The intercalation composites were characterized by means of Scanning Electron Microscope (SEM), X-ray diffraction (XRD), Fourier transformation infrared (FT-IR) and High-resolution thermogravimetric analysis (HRTG). The results of XRD show that the intercalation of kaolinite by potassium acetate causes an increase of the basal spacing from 0.718 to 1.42nm. Thermal analysis shows the dehydroxylation of kaolinite decreased from 464 °C to 459.5 °C after intercalation of potassium acetate and three endotherms at 280, 323 and 459.5 °C attributed to the loss of water in the composite, potassium acetate and hydroxyl in the composite.

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Preparation and Characterization of Fibri-Form Silica from Short Chrysotile Fibers by Mix-Roasting

Materials Science Forum ◽

10.4028/www.scientific.net/msf.809-810.313 ◽

2014 ◽

Vol 809-810 ◽

pp. 313-318

Author(s):

Peng Cheng Song ◽

Tong Jiang Peng ◽

Hong Juan Sun ◽

Yu Cao Yu

Keyword(s):

Electron Microscopy ◽

Thermal Analysis ◽

Scanning Electron Microscopy ◽

Fluorescence Analysis ◽

X Ray Diffraction ◽

X Ray ◽

Fibrous Morphology ◽

Ft Ir ◽

Scanning Electron

Fibri-form silica was extracted from short chrysotile fibers by mix-roasting with ammonium bisulfate. The fibri-form silica were characterized by X-ray fluorescence analysis (XRF), X-ray diffraction (XRD), thermogravimetry and differential thermal analysis (TG-DTA), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FT-IR) and N2 adsorption isotherms. The results show that the fibri-form silica with disordered crystalline structure, but also in fibrous morphology. The surface area and pore volume of fibri-form silica are 181.66 m2/ g and 0.44 cc/ g, respectively. The structure of fibri-form silica is stable, no phase transformed from 50 to 1200 oC.

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Synthesis and Mechanism of Tetracalcium Phosphate from Nanocrystalline Precursor

Journal of Nanomaterials ◽

10.1155/2014/840102 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11 ◽

Cited By ~ 8

Author(s):

Jianguo Liao ◽

Xingze Duan ◽

Yanqun Li ◽

Caifeng Zheng ◽

Zhengpeng Yang ◽

...

Keyword(s):

Crystal Structure ◽

Thermal Analysis ◽

Calcination Temperature ◽

X Ray Diffraction ◽

Tetracalcium Phosphate ◽

X Ray ◽

Transmission Electron ◽

Ft Ir ◽

Ir And Raman ◽

Cooling Methods

Tetracalcium phosphate (TTCP, Ca4(PO4)2O) was prepared by the calcination of coprecipitated mixture of nanoscale hydroxyapatite (HA, Ca10(PO4)6(OH)2) and calcium carbonate crystal (CaCO3), followed by cooling in the air or furnace. The effect of calcination temperature on crystal structure and phase composition of the coprecipitation mixture was characterized by transmission electron microscope (TEM), thermal analysis-thermogravimetry (DTA-TG), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), and Raman spectroscopy (RS). The obtained results indicated that the synthesized mixture consisted of nanoscale HA and CaCO3with uniform distribution throughout the composite. TTCP was observed in the air quenching samples when the calcination temperature was above 1185°C. With the increase of the calcination temperature, the amount of the intermediate products in the air quenching samples decreased and cannot be detected when calcination temperature reached 1450°C. Unexpectedly, the mixture of HA and calcium oxide was observed in the furnace cooling samples. Clearly, the calcination temperature and cooling methods are critical for the synthesis of high-purity TTCP. The results indicate that the nanosize of precursors can decrease the calcination temperature, and TTCP can be calcinated by low temperature.

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