CHEMISTRY

Chemistry News

2009-02-12T21:40:00.000-08:00

Sulfur in Oil ...by Julia Fahrenkamp-Uppenbrink
Before crude oil can be used as a fuel or chemical feedstock, it must first be separated into different fractions, which are typically classified according to their viscosity. These must then be cleaned up; for example, to remove sulfur. Heavier fractions often contain more sulfur in the form of polycyclic aromatic sulfur heterocycles, which are difficult to remove with existing catalytic processes. To improve these processes, it is important to sift out knowledge about the molecular structures containing the sulfur from the highly complex overall mixture. Panda et al. have used a range of different ionization techniques, in conjunction with chromatography and mass spectrometry, to characterize the types and classes of sulfur-containing polyaromatic molecules in a crude oil fraction. Each ionization technique favors some molecules but discriminates against others, thus providing different windows for studying the system. Use of any one technique in isolation might therefore bias the results, but used in conjunction, they can elucidate the complex composition of crude oil and may inform the development of better sulfur-removal processes.

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Molecule of the week

2008-10-16T20:10:00.000-07:00

2,2' Bipyridine

Bipyridine is an organic heterocyclic compound containing two pyridine rings connected at one carbon site on each ring, with general formula C10H8N2. Each rings contain tri-unsaturated six-membered ring of five carbon atoms and one nitrogen atom. 2,2'-Bipyridine is a chelating ligand that forms complexes with most transition metal ions.

SYNONYMS: 2,2'-Dipyridine; 2-(2-pyridyl)pyrieine;
alpha,alpha'-Dipyridyl;alpha,alpha'-Bipyridyl; Bipyridyl; Dipyridyl
PHYSICAL STATE: white to off-white powder
MELTING POINT : 69 - 72 C
BOILING POINT : 272 - 273 C
SOLUBILITY IN WATER: Slightly soluble (soluble in alcohol , ether, benzene, chloroform
NFPA RATINGS: Health: 2; Flammability: 1; Reactivity: 0
STABILITY: Stable under ordinary conditions.

Our Research

2008-03-21T23:51:00.000-07:00

Department of Chemistry,University of Peradeniya is a very good place for new Researches to carry out their research projects. This is one such research work done by Dr. M. Y. Udugala-Ganehenege and her student Mr.Kasun S.P.Adhikari .click on this link to see their research work in detail.
http://kasunp.blogspot.com/

Lets study Chemistry

2008-03-21T23:38:00.000-07:00

Chromatography:
Three types of chromatography are routinely used in the organic chemistry teaching labs:
1.Column Chromatography
2.Thin Layer Chromatography (TLC)
3.Gas Chromatography (GC)
In these (and all types of) chromatographies, a mixture is separated by distributing the components between a stationary phase and a mobile phase. The mixture is first placed on the stationary phase (a solid or a liquid) and then the mobile phase (a gas or a liquid) is allowed to pass through the system.

click here for the complete note http://chemistry-007.blogspot.com

Lets Study about Elements

2008-03-18T03:42:00.000-07:00

There are about 110 elements in the periodical table in chemistry.Studying those elements is very impotant for students who are learning chemistry.therefore this web site will help them to study.just click on this link to see the periodic table and then click on each element you want to study.
http://chemicool.com

Research Articles

2008-03-18T03:29:00.000-07:00

Previous Research Articles are very useful for young researchers. All the new researchers should go through those articles to get a clear idea about their own research before starting it. For such a good researcher can find necessary articles easily using these links.
http://www.sciencedirect.com/
http://www.doaj.org/
http://www.ipl.org/ref
http://www.plos.org/
http://www.scopus.com/scopus/home.url

A Chemistry Dictionary

2008-03-18T03:19:00.000-07:00

An online Chemistry Dictionary,
now you can download it via this link http://www.babylon.com/home this is really interesting software.I'm sure this is very helful for students who study chemistry.