Fluorinations with complex metal fluorides. Part 9. Fluorinations of toluene and xylene derivatives by means of caesium tetrafluorocobaltate [III]
作者:John Bailey、Raymond G. Plevey、John Colin Tatlow
DOI:10.1016/s0022-1139(00)83080-8
日期:1987.10
octafluorotoluene (III), together with perfluoromethylcyclohexane (I), and also traces of 2H-heptafluorotoluene and 1-trifluoromethylnonafluorocyclohex-1-ene. Toluene itself gave (difluoromethyl)benzene, fluoro- and difluoro-methylpentafluorobenzene, difluoromethylundecafluorocyclohexane and (I); also traces of di- and tri-fluoromethylnonafluorocyclohex-1-ene: no benzotrifluoride or (III) were detected
Prevention of anode fouling during the electrochemical perfluorination of aromatic carboxylic acid chlorides
作者:N. Ilayaraja、D. Velayutham、M. Noel
DOI:10.1016/j.jfluchem.2009.04.010
日期:2009.7
The electrochemical perfluorination of benzoyl chloride, p-substituted benzoyl chlorides and cyclo-hexane carboxylic acidchloride in anhydrous hydrogen fluoride (AHF) medium on nickel electrode is reported. Experimental conditions suppressing polymeric film formation on the electrode are optimized. Addition of 1 wt.% dimethyl sulfide based on the volume of AHF in the initial stage of electrochemical
Ergonomic systems and methods providing intelligent adaptive surfaces and temperature control
申请人:——
公开号:US20010045104A1
公开(公告)日:2001-11-29
Ergonomic systems which provide medical therapy, comfort and enhanced function are provided. Surfaces are provided with adjustable contour, transient force damping and temperature. The technologies are applied to footwear, seating surfaces an cryotherapy devices. The cooling and cryotherapy system employ an evaporator in close proximity to skin, and therefore employ methods to reduce risk of frostbite. Advanced control and power supply options are disclosed.
A method for treating an electronic component wherein the value of an optical property associated with a process fluid is measured and compared with a threshold value of an optical property. This comparison is used to determine what modification, if needed, should be made to the process fluid to restore it to its threshold value. Also disclosed is a system for treating electronic components with a process fluid.
The present invention relates to the field of compression refrigeration and air conditioning. Specifically, the present invention relates to a tracer-containing compositions comprising refrigeration/heating fluid and tracer compound(s). Additionally, the present invention relates to a method for detecting tracer compounds to identify gases after leaving the custody of the original manufacturer or prior source, and the verification of authenticity. The aforementioned method provides for the detection of tracer compounds, which in turn, may alert the refrigeration industry to when dilution, adulteration, contamination or other unauthorized practices have occurred with refrigeration products.