Modification of Natural Alumosilicates Suspensions by Cation-Active Organic Compounds and Study of Structural-Sorption Properties of Thus Prepared Sorbents

2008 ◽  
pp. 467-472
Author(s):  
Maryna Yu. Tryfonova ◽  
Svetlana V. Bondarenko ◽  
Svetlana A. Dolenko ◽  
Zinaida G. Ivanova ◽  
Yuri I. Tarasevich
Keyword(s):  
Organic Compounds ◽  
Sorption Properties

Structure and Sorption Properties of Silica Chemically Modified with Copper Malonate

2015 ◽  
Vol 670 ◽  
pp. 252-257
Author(s):  
Evgeniya A. Pakhnutova ◽  
Yury G. Slizhov
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Extraction ◽  
Aqueous Solutions ◽  
Organic Compounds ◽  
Silica Gel ◽  
Solid Phase ◽  
Sorption Properties ◽  
Phase Extraction ◽  
Chemically Modified ◽  
Structure And Sorption Properties

The sorbent with the grafted layers of malonate copper was obtained on the surface of silica gel Silokhrom S-120 by the method of successive assemblies. Structural, sorption and chromatographic properties of the investigated materials were studied by adsorption of porosimetry, gas chromatography, pH-measurement and Hammett’s method. The sorbent was used for solid phase extraction of organic compounds from aqueous solutions.

scholarly journals Non-zeolitic properties of the dipeptide l-leucyl–l-leucine as a result of the specific nanostructure formation

2017 ◽  
Vol 19 (21) ◽  
pp. 13788-13797 ◽  
Author(s):  
Marat A. Ziganshin ◽  
Aisylu S. Safiullina ◽  
Sufia A. Ziganshina ◽  
Alexander V. Gerasimov ◽  
Valery V. Gorbatchuk
Keyword(s):  
Organic Compounds ◽  
Sorption Properties ◽  
Self Organization ◽  
Nanostructure Formation ◽  
Separation Of Mixtures

Non-zeolitic sorption properties of l-leucyl–l-leucine which results from a specific self-organization of the dipeptide into different micro- and nanostructures may be used for the separation of mixtures of organic compounds.

The Tempo and mode(S) of Prebiotic Evolution

1997 ◽  
Vol 161 ◽  
pp. 419-429 ◽  
Author(s):  
Antonio Lazcano
Keyword(s):  
Origin Of Life ◽  
Organic Compounds ◽  
Biological Evolution ◽  
Current Evidence ◽  
Early Diversification ◽  
Time Period ◽  
The Galaxy ◽  
History Of ◽  
Widespread Phenomenon ◽  
The Origin Of Life

AbstractDifferent current ideas on the origin of life are critically examined. Comparison of the now fashionable FeS/H2S pyrite-based autotrophic theory of the origin of life with the heterotrophic viewpoint suggest that the later is still the most fertile explanation for the emergence of life. However, the theory of chemical evolution and heterotrophic origins of life requires major updating, which should include the abandonment of the idea that the appearance of life was a slow process involving billions of years. Stability of organic compounds and the genetics of bacteria suggest that the origin and early diversification of life took place in a time period of the order of 10 million years. Current evidence suggest that the abiotic synthesis of organic compounds may be a widespread phenomenon in the Galaxy and may have a deterministic nature. However, the history of the biosphere does not exhibits any obvious trend towards greater complexity or «higher» forms of life. Therefore, the role of contingency in biological evolution should not be understimated in the discussions of the possibilities of life in the Universe.

Sign in / Sign up

Export Citation Format

Share Document