Theoretical Study of Simulated Dehydration of Crystal Silica Planes and Determination of Silica Gel Hydroxyl Distribution by NMR

1997 ◽

Vol 62 (10) ◽

pp. 1511-1526

Author(s):

María-Luisa Alcaraz ◽

Ángela Molina

Keyword(s):

Kinetic Parameters ◽

Rate Constant ◽

Theoretical Study ◽

Time Function ◽

Time Response ◽

Current Time ◽

Regeneration Mechanism ◽

Sinusoidal Current ◽

Regeneration Processes

A theoretical study of the potential-time response to sinusoidal current applied to static and dynamic electrodes for regeneration processes is presented. Methods for determination of the regeneration fraction, rate constant of the chemical reaction and heterogeneous kinetic parameters are proposed.

Download Full-text

RETRACTED: Determination of Co(II) in water and soil samples using spectrophotometry coupled with preconcentration on 4-amino methyl pyridine anchored silica gel column

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2006.11.060 ◽

2007 ◽

Vol 146 (1-2) ◽

pp. 137-141 ◽

Cited By ~ 6

Author(s):

C. Sivani ◽

G. Ramakrishna Naidu ◽

J. Narasimhulu ◽

D. Rekha ◽

J. Dilip Kumar ◽

...

Keyword(s):

Silica Gel ◽

Soil Samples ◽

Water And Soil Samples ◽

Methyl Pyridine

Download Full-text

Solid-Phase Fluorimetric Determination of Tetracyclines in Medicinal Preparations on Cellulose Paper and in Thin-Layer Silica Gel Using a Smartphone

Pharmaceutical Chemistry Journal ◽

10.1007/s11094-021-02416-x ◽

2021 ◽

Author(s):

V. G. Amelin ◽

Z. A. C. Shogah ◽

D. S. Bol’shakov

Keyword(s):

Thin Layer ◽

Silica Gel ◽

Solid Phase ◽

Fluorimetric Determination ◽

Cellulose Paper ◽

Medicinal Preparations

Download Full-text

Preparative-scale HPLC Resolution of Metallacyclic η3-Allyltricarbonyliron Complexes and Determination of the Absolute Configuration by X-Ray Crystal Structure Analysis

Journal of Chemical Research ◽

10.1177/174751989902300930 ◽

1999 ◽

Vol 23 (9) ◽

pp. 578-579

Author(s):

Rainer Schobert ◽

Hermann Pfab ◽

Jutta Böhmer ◽

Frank Hampel ◽

Andreas Werner

Keyword(s):

Crystal Structure ◽

Silica Gel ◽

Structure Analysis ◽

Absolute Configuration ◽

Crystal Structure Analysis ◽

Preparative Scale ◽

X Ray ◽

The Absolute

Racemates of (η3-allyl)tricarbonyliron lactone complex Fe(CO)3{η1:η3-C(O)XCH2CHCMeCH2} 1a (X = O) and (η3-allyl)tricarbonyliron lactam complex 2a (X = NMe) are resolved on a preparative scale by HPLC on cellulose tris(3,5-dimethylphenyl)carbamate/silica gel RP-8 and the absolute configuration of (-)-2a is determined by X-ray crystal structure analysis.

Download Full-text

Determination of Sulfaquinoxaline, Sulfathiazole, Sulfamerazine, and Sulfamethazine in Feed Concentrates or Premixes

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/56.6.1475 ◽

1973 ◽

Vol 56 (6) ◽

pp. 1475-1479 ◽

Cited By ~ 1

Author(s):

Ugo R Cieri

Keyword(s):

Silica Gel ◽

The Other ◽

Uv Absorbance ◽

The Individual

Abstract Sulfaquinoxaline is determined by its UV absorbance at about 358 nm, where the other 3 sulfonamides do not absorb. Sulfathiazole, sulfamerazine, and sulfamethazine are determined by a quantitative TLC procedure, based on the separation of the compounds on silica gel plates; the spots are extracted and the centrifuged extracts are analyzed spectro-photometrically. A method of calculating the total sulfonamide content, independent of the individual components, is also introduced.

Download Full-text