PREPARATION AND EVALUATION OF MAGNETIC CHITOSAN PARTICLES MODIFIED WITH ETHYLENEDIAMINE AND Fe(III) FOR THE REMOVAL OF Cr(VI) FROM AQUEOUS SOLUTIONS

1995 ◽

Vol 60 (4) ◽

pp. 568-575

Author(s):

Karel Sporka ◽

Jiří Hanika ◽

Vladimír Jůn

Keyword(s):

Aqueous Solutions ◽

Active Component ◽

Catalyst Activity ◽

Gas Oil ◽

Gamma Alumina ◽

Molybdenum Sulfides ◽

Hydrodesulfurization Catalysts ◽

Hds Catalysts ◽

Kinetics Of ◽

Preparation And Evaluation

Preparation of skeletal Co-Mo catalysts by controlled impregnation of aluminosilicate skeletons containing deposited gamma-alumina with aqueous solutions of active component precursors has been investigated. The activity of the laboratory catalysts in gas oil hydrodesulfurization has been determined. Kinetics of impregnation of skeletal supports, the effect of their type, and the dependence of catalyst activity on the content of cobalt and molybdenum sulfides are reported. HDS skeletal catalysts prepared were compared with the extruded types. It was found that skeletal HDS catalysts show the higher activity (related to the content of alumina and Co-Mo sulfides) than the extruded ones due to the less significant effect of internal diffusion. However, if the activity is related to the same volume of catalyst bed, the activity of skeletal catalysts is only one fourth of that of the extruded types.

Download Full-text

Magnetic chitosan composite particles: Evaluation of thorium and uranyl ion adsorption from aqueous solutions

Carbohydrate Polymers ◽

10.1016/j.carbpol.2011.08.095 ◽

2012 ◽

Vol 87 (2) ◽

pp. 1185-1191 ◽

Cited By ~ 100

Author(s):

Doina Hritcu ◽

Doina Humelnicu ◽

Gianina Dodi ◽

Marcel Ionel Popa

Keyword(s):

Aqueous Solutions ◽

Uranyl Ion ◽

Composite Particles ◽

Ion Adsorption ◽

Magnetic Chitosan ◽

Chitosan Composite

Download Full-text

Preparation of cross-linked magnetic chitosan-phenylthiourea resin for adsorption of Hg(II), Cd(II) and Zn(II) ions from aqueous solutions

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2012.01.015 ◽

2012 ◽

Vol 209-210 ◽

pp. 240-249 ◽

Cited By ~ 179

Author(s):

M. Monier ◽

D.A. Abdel-Latif

Keyword(s):

Aqueous Solutions ◽

Magnetic Chitosan

Download Full-text

Magnetic chitosan microspheres for the removal of methyl violet 2B from aqueous solutions

Journal of Dispersion Science and Technology ◽

10.1080/01932691.2021.2008420 ◽

2021 ◽

pp. 1-13

Author(s):

Luciane Torezan ◽

Jordana Bortoluz ◽

Nayrim Brizuela Guerra ◽

Fabrício Ferrarini ◽

Luis Rafael Bonetto ◽

...

Keyword(s):

Aqueous Solutions ◽

Methyl Violet ◽

Magnetic Chitosan ◽

Chitosan Microspheres ◽

Methyl Violet 2B ◽

Magnetic Chitosan Microspheres

Download Full-text

Preparation and Evaluation of a Water-Soluble Cholesterol Standard

Clinical Chemistry ◽

10.1093/clinchem/20.4.482 ◽

1974 ◽

Vol 20 (4) ◽

pp. 482-485 ◽

Cited By ~ 11

Author(s):

Bernard Klein ◽

Norman B Kleinman ◽

James A Foreman

Keyword(s):

Aqueous Solutions ◽

Water Soluble ◽

Organic Salts ◽

Cholesteryl Hemisuccinate ◽

Preparation And Evaluation ◽

Analytical Reference ◽

Inorganic And Organic

Abstract We synthesized some inorganic and organic salts of cholesteryl hemisuccinate. Aqueous solutions of the morpholine salt, at concentrations equivalent to 400 mg of cholesterol per deciliter, have been evaluated as aqueous cholesterol standards and compared to alcoholic cholesterol solutions in analyses for cholesterol in serum, as performed by two analytical reference procedures. No significant differences were found. The usefulness of solutions of this salt as additives for serum controls or recovery studies has been also demonstrated.

Download Full-text