Solid, Liquid, Gas, Supercritical, ¿new phase?

Everybody studied in his childhood 3 states of the materials...
Solid, liquid and gas...
If you follow this blog you may know that above certain pressure and temperature there is another state where the inter-phase of liquid and gas disappears, is the supercritical state.
If you are scientist you may have heard about plasma state... were gases are ionisated...
But a study of superconductor materials seems to have discovered a new state.

Supercritical carbon dioxide Brayton Cycle turbines promise giant leap in power generation

Supercritical fluids are not only used as a solvent media for extraction or fractionation...
In the article I've found the supercritical carbon dioxide is used as fluid for moving turbines in systems that claims higher efficiency.

SOURCE : Sandia Labs News Releases March 4, 2011

Sandia National Laboratories researchers are moving into the demonstration phase of a novel gas turbine system for power generation, with the promise that thermal-to-electric conversion efficiency will be increased to as much as 50 percent -- an improvement of 50 percent for nuclear power stations equipped with steam turbines, or a 40 percent improvement for simple gas turbines. The system is also very compact, meaning that capital costs would be relatively low.

It's not easy being green

Due to the in international year of chemistry, Nature is publishing some interesting papers.

One of them is a reviews of "green chemistry", which 12 principles were formulated by Paul Anastas and John Warner in the 1990s to provide a roadmap for chemists trying to implement green chemistry.

As every body can suppose supercritical fluid technologies are shown as an example of green process that can replace some organic, and unfriendly, solvents...

But their main drawback are also pointed out.

I hope you enjoy the articles and wait you comments!

Supercritical CO2 Power Cycle Symposium

Supercritical CO2 Power Cycle Symposium will be held at  the University of Colorado in Boulder on May 24 - 25, 2011.

The Supercritical CO₂ Power Cycle Symposium is an academic workshop organized to advance supercritical Carbon Dioxide (CO₂) power cycle technology. Every two years researchers, industry partners, and end users meet to learn about advancements in the field; discuss priorities; and establish a critical path for technology development.

The twelve principles of green chemistry

I think that a blog of Supercritical Fluids, Green Chemistry and Sustainable Development must include these 12 principles that are in fact our guideline.

Published in:
Green Chemistry: Theory and Practice, P. T. Anastas and J. C. Warner, Oxford University Press, Oxford, 1998.

postponed deadline for abstract submission to13th...

The deadline for abstract submission to13th European Meeting on Supercritical Fluids has been postponed until April 15...

So you still in time to send your abstract...

you have more info in the previous post and in the official web page...

Don't be late this time!

We are changing!

As you may notice, if it's not the first time you visit our blog, we are changing things...
That was the old blog:

This is the change 0.1.

Only little details by now...

We will make changes during the next week...

and posting each step...

We hope you'll enjoy the new template.

Best regards!

SCF 2011; 5th international conference on Packed Column SFC

SFC 2011 promises to attract leading chromatography scientists from the pharmaceutical industry, research institutes and universities.
The conference will be held in New York from the 20 to 22 of July.

13th European Meeting on Supercritical Fluids

13th European Meeting on Supercritical Fluids: SCFs as product and process solvents in emerging applications.

The congresswill be held from 9th to 13th October 2011 and will take place at the World Forum Convention Center in The Hague, The Netherlands.
The goal of the 13th edition of the European Symposium on Supercritical Fluids is to bring together scientists and engineers interested in Supercritical Fluids from traditional to emergent areas.
Deadlines:
Abstract: March 18th 2011
Full text: July 8th 2011