News Column

Studies from Shaanxi Normal University Update Current Data on Ketones (Modulation of Silver-Titania Nanoparticles on Polymethylhydrosiloxane-based...

July 22, 2014



Studies from Shaanxi Normal University Update Current Data on Ketones (Modulation of Silver-Titania Nanoparticles on Polymethylhydrosiloxane-based Semi-Interpenetrating Networks for Catalytic Alkynylation of Trifluoromethyl Ketones and Aromatic ...)

By a News Reporter-Staff News Editor at Life Science Weekly -- Researchers detail new data in Ketones. According to news reporting from Xi'an, People's Republic of China, by NewsRx journalists, research stated, "In this work, we have developed a new approach to monodispersed hybrid Ag@TiO2 nanocomposites using a titanium-promoted cross-linking reduction in the Si-H functional material, polymethylhydrosiloxane (PMHS)-based semi-interpenetrating networks (PMHSIPN). The titania was designed to be highly dispersed on the functional material and then the Ag@TiO2 nanoparticles were formed in uniform size and shape under mild conditions."

The news correspondents obtained a quote from the research from Shaanxi Normal University, "The experimental results reveal that the nanosilver catalysts (the fabricated Ag@TiO2 located on the PMHSIPNs, namely, nanoAg@TiO2@PMHSIPN) have enhanced catalytic activities in the alkynylation of trifluoromethyl ketones or alpha, beta-unsaturated trifluoromethyl ketones with terminal alkynes. In this reaction, the hybrid Ag@TiO2 nanoparticles exhibited a high level of catalytic activity for the selective 1,2-alkynylation of various trifluoromethyl ketones and alpha, beta-unsaturated trifluoromethyl ketones into a wide range of fluorinated alcohols in water. Finally, on the basis of the nanoAg@TiO2@PMHSIPN-catalyzed alkynylation of trifluoromethyl ketones, we developed a new concept whereby highly reactive substrates act as a 'reactive tractor' or 'reactive springboard' to drive the transformation of poorly reactive substrates as springboard chemistry."

According to the news reporters, the research concluded: "Consequently, we found that trifluoromethyl ketone can be used as an efficient additive in the nanosilver-catalyzed alkynylation of aldehydes."

For more information on this research see: Modulation of Silver-Titania Nanoparticles on Polymethylhydrosiloxane-based Semi-Interpenetrating Networks for Catalytic Alkynylation of Trifluoromethyl Ketones and Aromatic Aldehydes in Water. Chemcatchem, 2014;6(2):580-591. Chemcatchem can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell - www.wiley.com/; Chemcatchem - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1867-3899)

Our news journalists report that additional information may be obtained by contacting H. Wang, Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710062, People's Republic of China. Additional authors for this research include K.F. Yang, L. Li, Y. Bai, Z.J. Zheng, W.Q. Zhang, Z.W. Gao and L.W. Xu (see also Ketones).

Keywords for this news article include: Asia, Xi'an, Ketones, Aldehydes, Nanosilver, Nanoparticle, Nanotechnology, Organic Chemicals, Emerging Technologies, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Life Science Weekly


Story Tools






HispanicBusiness.com Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters