scholarly journals Different action of alkali/alkaline earth metal chlorides on cellulose pyrolysis

2008 ◽  
Vol 81 (1) ◽  
pp. 80-87 ◽  
Author(s):  
Naoki Shimada ◽  
H. Kawamoto ◽  
S. Saka
Keyword(s):  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Metal Chlorides ◽  
Cellulose Pyrolysis

Enhanced dehydrogenation of ammonia borane by reaction with alkaline earth metal chlorides

2012 ◽  
Vol 37 (5) ◽  
pp. 4274-4279 ◽  
Author(s):  
Yongtao Li ◽  
Fang Fang ◽  
Yun Song ◽  
Yuesheng Li ◽  
Qingan Zhang ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Earth Metal ◽  
Ammonia Borane ◽  
Alkaline Earth Metal ◽  
Metal Chlorides

Molecular interaction investigation of some alkaline earth metal salts in aqueous citric acid at various temperatures by physiochemical studies

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Manish Kumar ◽  
Shashi Kant ◽  
Deepika Kaushal
Keyword(s):  
Citric Acid ◽  
Molar Volume ◽  
Apparent Molar Volume ◽  
Alkaline Earth ◽  
Relative Viscosity ◽  
Earth Metal ◽  
Metal Salts ◽  
Alkaline Earth Metal ◽  
Viscosity Data ◽  
Metal Chlorides

Abstract Densities, ultrasonic velocity, conductance and viscosity of some alkaline earth metal chlorides such as magnesium chloride (MgCl2) and calcium chloride (CaCl2) were calculated in the concentration range (0.01–0.12 mol kg−1) in 0.01 mol kg−1 aqueous solution of citric acid (CA + H2O) at four varying temperatures T 1 = 303.15 K, T 2 = 308.15 K, T 3 = 313.15 K and T 4 = 318.15 K. The parameters like apparent molar volume (ϕ v ), limiting apparent molar volume ( ϕ v o ${\phi }_{v}^{o}$ ) and transfer volume (Δtr ϕ v o ${\phi }_{v}^{o}$ ) were calculated from density data. Viscosity data have been employed to calculate Falkenhagen coefficient (A), Jone–Dole’s coefficient (B), relative viscosity (η r ), and relaxation time (τ) whereas limiting molar conductance ( Λ m o ${{\Lambda}}_{m}^{o}$ ) has been evaluated from conductance studies. Using these parameters, various type of interactions occurred in the molecules have been discussed. Values of Hepler’s constant (d 2 ϕ v o ${\phi }_{v}^{o}$ /dT 2) p , (dB/dT) and d( Λ m o ${{\Lambda}}_{m}^{o}$ η o )/dT suggests that both MgCl2 and CaCl2 behave as structure breaker in (CA + H2O) system. The positive value of transfer volume exclusively tells about solute–solvent interactions which further indicate that both metal chlorides distort the structure of water and act as structure breaker. These studies are helpful in understanding the nature of interactions occurs in biological systems as CA and metal salts are essential for normal functioning of body.

scholarly journals Mixed ligand complexes of alkaline earth metals: Part XII. Mg(II), Ca(II), Sr(II) and Ba(II) complexes with 5-chlorosalicylaldehyde and salicylaldehyde or hydroxyaromatic ketones

2002 ◽  
Vol 67 (4) ◽  
pp. 229-234 ◽  
Author(s):  
R.N. Prasad ◽  
M. Agrawal ◽  
M. Sharma
Keyword(s):  
1H Nmr ◽  
Nmr Spectra ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Mixed Ligand ◽  
Alkaline Earth Metals ◽  
1H Nmr Spectra ◽  
Mixed Ligand Complexes ◽  
Alkaline Earth Metal ◽  
Metal Chlorides

The reactions of alkaline earth metal chlorides with 5-chlorosalicylaldehyde and salicylaldehyde, 2-hydroxyacetophenone or 2-hydroxypropiophenone have been carried out in 1: 1: 1 mole ratio and the mixed ligand complexes of the type MLL?(H2O)2 (where M = Mg(II), Ca(II), Sr(II) and Ba(II),HL= 5-chlorosalicylaldehyde and HL?= salicylaldehyde, 2-hydroxyacetophenone or 2-hydroxypropiophenone) have been isolated. These complexes were characterized by TLC, conductance measurements, IR and 1H-NMR spectra.

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