Research Interests
Preparation and characterization of ionic liquids and other types of ionic materials for a wide range of applications in electrochemistry, green chemistry, Clean energy, biotechnology, catalysis, organic and inorganic synthesis, extractions and separations, metal plating, photovoltaic, batteries and super capacitors and environmental evaluation of Ionic Liquids.
Publication
Published more than 20 journal papers and 50 patents. Some recent selected publications include:
Effects of different head groups and functionalized side chains on the cytotoxicity of ionic liquids. Stolte, Stefan; Arning, Juergen; Bottin-Weber, Ulrike; Mueller, Anja; Pitner, William-Robert; Welz-Biermann, Urs; Jastorff, Bernd; Ranke, Johannes. Green Chemistry (2007), 9(7), 760-767.
Dehydration of alcohols to produce alkenes or ethers. Ignatyev, Nikolai; Welz-Biermann, Urs; Koppe, Karsten; Barthen, Peter; Frohn, Hermann Josef. 03.08.2005. WO2007014613.
Surface modification solid carrier materials for HPLC with silanes. Lubda, Dieter; Welz-Biermann, Urs. 04.07.2005. WO2007003257.
Anion effects on the cytotoxicity of ionic liquids. Stolte, Stefan; Arning, Juergen; Bottin-Weber, Ulrike; Matzke, Marianne; Stock, Frauke; Thiele, Karen; Uerdingen, Marc; Welz-Biermann, Urs; Jastorff, Bernd; Ranke, Johannes. Green Chemistry (2006), 8(7), 621-629.
Process for preparation of ionic liquids with low-viscosity and high electrochemical stability containing fluorinated bis-phosphinic imide anions. Ignatyev, Nikolai; Welz-Biermann, Urs; Heckmeier, Michael; Bissky, German; Willner, Helge. 02.06.2005. WO2006128563.
Electrochemical deposition of tantalum and/or copper in ionic liquids. Welz-Biermann, Urs; Endres, Frank; Zein, El Abedin. 10.12.2004. WO2006061081.
New ionic liquids with stable fluorinated anions. Ignatev, Nikolai V.; Welz-Biermann, Urs. Editor(s): Cornils, Boy. Multiphase Homogeneous Catalysis (2005), 2 568-570.
A study on the electrodeposition of tantalum on NiTi alloy in an ionic liquid and corrosion behaviour of the coated alloy. Zein El Abedin, S.; Welz-Biermann, U.; Endres, F. Electrochemistry Communications (2005), 7(9), 941-946.
New ionic liquids with tris(perfluoroalkyl)trifluorophosphate (FAP) anions. Ignat'ev, N. V.; Welz-Biermann, U.; Kucheryna, A.; Bissky, G.; Willner, H. Journal of Fluorine Chemistry (2005), 126(8), 1150-1159.
Synthesis of cyanoborate and cyanofluoroborate salts with organic cations and their uses. Welz-Biermann, Urs; Ignatjev, Nikolai; Bernhardt, Eduard; Finze, Maik; Willner, Helge. 14.02.2003. WO2004072089.