Reaction between Zinc and Hydrochloric Acid in Solutions Containing Alkyltrimethylammonium Bromide Cn TAB (n  = 8, 10, and 12) Cationic Surfactants: Influence of Surfactant Chain Length

2019 ◽  
Vol 22 (4) ◽  
pp. 845-853
Author(s):  
Abdelmnim M. Altwaiq ◽  
Rami A. Abdel-Rahem
Keyword(s):  
Hydrochloric Acid ◽  
Chain Length ◽  
Cationic Surfactants

Effects of Chain Length and Structure of Cationic Surfactants on the Adsorption onto Na–Kaolinite

1999 ◽  
Vol 213 (2) ◽  
pp. 596-601 ◽  
Author(s):  
Jinben Wang ◽  
Buxing Han ◽  
Ming Dai ◽  
Haike Yan ◽  
Zhixin Li ◽  
...  
Keyword(s):  
Chain Length ◽  
Cationic Surfactants

scholarly journals The Role of Chain Length and Structure in Surfactant Adsorption at Na-Kaolinite

1998 ◽  
Vol 16 (7) ◽  
pp. 565-575 ◽  
Author(s):  
Jinben Wang ◽  
Buxing Han ◽  
Ming Dai ◽  
Haike Yan ◽  
Zhixin Li ◽  
...  
Keyword(s):  
Chain Length ◽  
Cationic Surfactants ◽  
Adsorption Mechanism ◽  
Alkyl Chain ◽  
Quantitative Description ◽  
Single Chain ◽  
Double Chain ◽  
Intramolecular Association ◽  
Chain Lengths

The adsorption of a series of cationic surfactants with different chain lengths and structures on a non-swelling clay surface (sodium kaolinite) has been studied by microelectrophoresis and adsorption isotherms. It was found that an increase in the number of CH2 groups in the shorter alkyl chain of the double-chain surfactant has much less effect on the adsorption behaviour than changing the length of the alkyl chain in the single-chain surfactants. It is inferred that the effective hydrophobicity of the shorter chains in these double-chain surfactants is reduced by their intramolecular association with the longer chain. A comparison of adsorption and micellization leads to an empirical, quantitative description of the effects of alkyl chain length and structure on adsorption. The adsorption mechanism of cationic surfactants on to Na-kaolinite was discussed.

scholarly journals Influence of surfactant alkyl length in functionalizing sol–gel derived microporous cobalt oxide silica

RSC Advances ◽  
2014 ◽  
Vol 4 (76) ◽  
pp. 40181-40187 ◽  
Author(s):  
Gianni Olguin ◽  
Christelle Yacou ◽  
Simon Smart ◽  
João C. Diniz da Costa
Keyword(s):  
Cobalt Oxide ◽  
Chain Length ◽  
Oxidation State ◽  
Cationic Surfactants ◽  
Alkyl Chain ◽  
Sol Gel ◽  
Alkyl Chain Length ◽  
Pore Morphology ◽  
Silica Materials ◽  
Alkyl Length

The size or alkyl chain length of cationic surfactants can be used to tailor both the pore morphology and the functionality or oxidation state of cobalt in silica materials.

scholarly journals Studies on Chitin V. The Action of Mineral Acids on Chitin

1962 ◽  
Vol 15 (3) ◽  
pp. 526 ◽  
Author(s):  
RH Hackman
Keyword(s):  
Hydrochloric Acid ◽  
Phosphoric Acid ◽  
Sulphuric Acid ◽  
Chain Length ◽  
Colloidal Chitin ◽  
Mineral Acids ◽  
Extensive Degradation

Chitin undergoes rapid and extensive degradation at 20�C when dissolved in ION hydrochloric acid, 21N sulphuric acid, or 85% phosphoric acid. Most of the degradation occurs in the first few minutes after the chitin is dissolved and the products formed are oligosaccharides (which are to some extent deacetylated) and N�acetyl-D.glucosamine. Glucosamine was not found except possibly in the smallest traces. "Colloidal" chitin, prepared by precipitation of chitin from solution in cold 21N sulphuric acid, has a very much shorter chain length than the chitin from which it was prepared. Chitin is more stable in dilute (2N) hydrochloric acid.

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