Europe’s largest urea plant has started production: In Sluiskil in the Netherlands have the Dortmund plant manufacturers of ThyssenKrupp for the Norwegian company Yara, a plant for production of 3,500 tonnes per day urea solution delivered and put into operation. The plant has now been passed to the customer. The construction took three years. Yara has invested 400 million euros for this.
The special feature of the system is that part of the production is not a fertilizer, but as an aqueous urea solution for cleaning exhaust gases of diesel use is found. To be known as AdBlue ® technology reduces NOx emissions. The urea solution is offered for example at service stations and marketed under the name Yara’s Air1 ®. Trucks to reach the latest design standards so that the limits of € 5 and € standard sixth in a few years Ammonia and carbon dioxide as raw materials are used which are available at the site in Sluiskil. With the urea plant are now obsolete and transport of ammonia accumulating CO2 is processed in an environmentally conscious.
The technology was licensed by the Dutch company Stamicarbon, ThyssenKrupp Uhde, the design, supply all the equipment and the construction and installation of the equipment acquired for a fixed price turnkey basis.
First renowned sporting goods manufacturer, and now the fashion chain H & M: After only two months campaign, these textile manufacturers on the claims received by Greenpeace and want to ban dangerous chemicals from the 2020 production. This is good, because chemicals in the poison-producing countries such as China’s rivers and endanger the health of workers and residents. But who’s next? We asked our colleagues Manfred Santen, chemistry expert at Greenpeace, which he now wants to do.
russia travelThe so-called ergodic theorem is a fundamental scientific principle: it says that all the individual particles in physical systems as “chaotic” behavior as the entire ensemble – from individual behavior can be so closed to the whole. Although this principle has far-reaching consequences, there has been a pure of thought.
Professor Christopher Bräuchle and his team at the Department of Chemistry, Ludwig-Maximilians-Universität (LMU) München have now managed jointly with Professor Jörg Kärger and its Working Group (University of Leipzig) for the first time, by measuring the diffusion behavior of single molecules and whole molecule ensembles in the same system the ergodic theorem to confirm experimentally. This helped the researchers at the LMU fluorescent molecules, the “light traces” the path of each individual molecule traces exactly, while the Leipzig group also studied the corresponding ensemble of molecules. “Now it is very interesting to examine more precisely systems that do not behave according to the Ergodentheorems and find out the reasons why this is not the case,” says Bräuchle.
For centuries, people use the plant as active ingredients in traditional medicine.
In the past twenty years, a novel class of natural products has provided for more attention: the polyprenylated, polycyclic Acylphloroglucine, PPAP shortly. They have been proven to make including the microbes finish off or stop the uncontrolled proliferation of cancer cells.
In an advance online publication of the journal Nature Chemistry, 16 October 2011 [see below] reported the group led by Prof. Bernd Plietker by the Institute of Organic Chemistry at the University of Stuttgart, that it had managed, in just seven consecutive reactions diverse representatives of this class of natural compounds selectively produce in larger quantities.