A simple and sensitive conductometric method for the determination of copper(II), iron(II) and (III), aluminum(III), chromium(III), gold(III), platinum(IV), vanadyl, zirconyl, and uranyl ions with oxine solution in ethanol–water system is described. An average recovery of 100.3% with standard deviation not exceeding 0.4% is observed. The effect of solvent, shape of titration curves and molar ratio
Process for the preparation of 3-methyltetrahydrofuran
申请人:EASTMAN CHEMICAL COMPANY
公开号:EP1354881A1
公开(公告)日:2003-10-22
Disclosed is a process for the preparation of 3-methyltetrahydrofuran (MeTHF) from 3-(hydroxymethyl)tetrahydrofuran (HOMeTHF) by contacting HOMeTHF with hydrogen in the presence of an acidic, supported catalyst comprising a Group VIII metal.
Tris(2,2′-bipyridine) ruthenium(II) electron-transfer in a layered zirconium phosphate lattice
作者:Randall C. Yeates、Steven M. Kuznicki、Lindsay B. Lloyd、Edward M. Eyring
DOI:10.1016/0022-1902(81)80264-3
日期:1981.1
a crystalline zirconium phosphate containing apparent monolayers of tris(2,2′-bipyridine) ruthenium (II) is described. ESR and photoacoustic spectral data indicate the ruthenium complex retains its octahedral symmetry in this new host environment. Electron spin resonance data also indicate that under visible illumination triethylamine transfers an electron to the ruthenium complex to form a free radical