scholarly journals Comparison of Backyard and Municipal Solid Waste Composting Phenomena by Physicochemical, FT-IR and X-Ray Diffraction Analysis

2017 ◽  
Vol 6 (3) ◽  
Author(s):  
Manohara B
Keyword(s):  
Municipal Solid Waste ◽  
Diffraction Analysis ◽  
Solid Waste ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir

XRD (X-Ray Diffraction) Analysis of the Stabilized Ash

2013 ◽  
Vol 459 ◽  
pp. 7-10
Author(s):  
Hai Ying Zhang ◽  
Shu Zhen Li
Keyword(s):  
Heavy Metals ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Hydration Products ◽  
X Ray Diffraction ◽  
X Ray ◽  
Leaching Toxicity ◽  
Mineralogical Compositions

MSWI (municipal solid waste incineration) fly ash, generated in incineration process of municipal solid waste, contains lots of heavy metals, which will do harm do the environment if extracted. In this work, the ash is stabilized by cement to reduce leaching toxicity of heavy metals. Besides, mineralogical compositions of the product of different cement / ash ratios after conservation for different period were analyzed by means of XRD (X-ray diffraction). It was found that major mineralogical compositions CaCO3, Ca (0H)2 and C-H-S hydration products. Content of Ca (0H)2 and C-H-S rises with increase of conservation period and cement / ash ratio.

New Cu(II), Co(II), and Ni(II) complexes with thieno[2,3-b]pyridine and 2-methylthieno[2,3-b]pyridine as ligands: Synthesis and crystal structures

2009 ◽  
Vol 63 (3) ◽  
Author(s):  
Ján Halgaš ◽  
Viera Kolenová ◽  
Zuzana Števíková ◽  
Lucia Perašínová ◽  
Jozef Kožíšek
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Crystal Structures ◽  
Elemental Analysis ◽  
Zinc Chloride ◽  
Coordination Compounds ◽  
Biological Activities ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir

AbstractAlthough thienopyridines attract attention because of their biological activities, they have not been used as ligands in coordination compounds. Thieno[2,3-b]pyridine was prepared by known procedures; by reduction of 2-nitrothiophene, and reaction of the resulting 2-thienyl ammonium salt with malondialdehyde tetramethylacetal in the presence of zinc chloride. The same procedure was used for the preparation of a new derivative, 2-methylthieno[2,3-b]pyridine, starting from 2-methyl-5-nitrothiophene. The thienopyridines were used in the synthesis of coordination compounds. Chlorides, isothiocyanates, acetates, and chloroacetates of copper(II), nickel(II), or cobalt(II) were used as starting salts. The prepared complexes were characterized by elemental analysis and FT IR. Structures of the four complexes were determined by single-crystal X-ray diffraction analysis.

Synthesis, Crystal Structure and Thermal Properties of Copper(II) Orotato Complex with 2,2’-Bipyridine

2005 ◽  
Vol 60 (11) ◽  
pp. 1138-1142 ◽  
Author(s):  
Okan Zafer Yeşilel ◽  
Halis Ölmez ◽  
Hasan İçbudak ◽  
Orhan Büyükgüngör
Keyword(s):  
Diffraction Analysis ◽  
Thermal Analyses ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carboxylate Oxygen ◽  
Air Atmosphere ◽  
Dimensional Network ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

A mixed-ligand orotato (HOr) complex of Cu(II) with 2,2’-bipyridine (bipy) was synthesized and characterized by elemental analysis, magnetic susceptibility, UV-vis and FT-IR spectroscopy, TG / DTA techniques and X-ray diffraction analysis. X-Ray diffraction analysis has shown that the squarepyramidal five-coordinate copper atom is chelated by the deprotonated N3 pyrimidine atom and the carboxylate oxygen atom of the bidentate orotato dianion, and to the two nitrogen atoms of the 2,2’- bipyridine molecule. A water molecule is attached above the N3O plane. Thermal analyses showed that the title compound decomposes in two steps over the range 20 - 1000 °C on heating in a static air atmosphere. Intermolecular hydrogen-bonds and π-ring interactions lead to the formation of a three-dimensional network.

A Dinuclear Adduct of bis(di-sec-butyl dithiophosphato) Cadmium(II) Built around the Hexamethylenetetramine Cage as Coordination Center

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Liviu Bolundut ◽  
Ionel Haiduc ◽  
Mary F. Mahon ◽  
Kieran C. Molloy
Keyword(s):  
Nmr Spectroscopy ◽  
Diffraction Analysis ◽  
The Other ◽  
Dinuclear Complex ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ir And Nmr Spectroscopy ◽  
Coordination Center ◽  
Chelating Ligand ◽  
Ft Ir

Bis(di-sec-butyldithiophosphato)cadmium(II) forms a 2:1 adduct with hexamethylenetetramine (urotropine), which was characterized by FT-IR and NMR spectroscopy. The compound is a dinuclear complex with the cadmium atoms coordinated at two nitrogen atoms of hexamethylenetetramine cage which is the actual coordination center. The X-ray diffraction analysis of the complex reveals a distorted square pyramidal coordination of the five-coordinate cadmium atoms. At each cadmium, one dithiophosphato group behaves as slightly anisobidentate whereas the other one is an isobidentate chelating ligand.

Ten-Vertex Polyhedral Monocarbaborane Chemistry. The Novel High-Yield Formation of the Ten-Vertex closo Compound [6-(PMe2Ph)-closo-1-CB9H9] from the Thermolysis of [8,8-(PMe2Ph)2-nido-8,7-PtCB9H11]

1993 ◽  
Vol 58 (12) ◽  
pp. 2924-2935 ◽  
Author(s):  
Jane H. Jones ◽  
Bohumil Štíbr ◽  
John D. Kennedy ◽  
Mark Thornton-Pett
Keyword(s):  
Nmr Spectroscopy ◽  
Diffraction Analysis ◽  
High Yield ◽  
Monoclinic Space Group ◽  
The Novel ◽  
X Ray Diffraction ◽  
Metal Centre ◽  
X Ray ◽  
Yield Formation ◽  
Boiling Toluene

Thermolysis of [8,8-(PMe2Ph)2-nido-8,7-PtCB9H11] in boiling toluene solution results in an elimination of the platinum centre and cluster closure to give the ten-vertex closo species [6-(PMe2Ph)-closo-1-CB9H9] in 85% yield as a colourles air stable solid. The product is characterized by NMR spectroscopy and single-crystal X-ray diffraction analysis. Crystals (from hexane-dichloromethane) are monoclinic, space group P21/c, with a = 903.20(9), b = 1 481.86(11), c = 2 320.0(2) pm, β = 97.860(7)° and Z = 8, and the structure has been refined to R(Rw) = 0.045(0.051) for 3 281 observed reflections with Fo > 2.0σ(Fo). The clean high-yield elimination of a metal centre from a polyhedral metallaborane or metallaheteroborane species is very rare.

Bis(μ-carboxylato)dienerhodium(I) Complexes - Synthesis, Characterization and Catalytic Activity

2008 ◽  
Vol 73 (8-9) ◽  
pp. 1205-1221 ◽  
Author(s):  
Jiří Zedník ◽  
Jan Sedláček ◽  
Jan Svoboda ◽  
Jiří Vohlídal ◽  
Dmitrij Bondarev ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Diffraction Analysis ◽  
Spectroscopic Methods ◽  
X Ray Diffraction ◽  
X Ray

Dinuclear rhodium(I) η2:η2-cycloocta-1,5-diene (series a) and η2:η2-norborna-2,5-diene (series b) complexes with μ-RCOO- ligands, where R is linear C21H43 (complexes 1a, 1b), CH2CMe3 (2a, 2b), 1-adamantyl (3a, 3b) and benzyl (4a, 4b), have been prepared and characterized by spectroscopic methods. Structures of complexes 2b, 3a and 4a were determined by X-ray diffraction analysis. Complexes prepared show low to moderate catalytic activity in polymerization of phenylacetylene in THF giving high-cis-transoid polymers, but they show only oligomerization activity in dichloromethane.

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