Merck Index says
RuCl3 occurs in two forms.
alpha, which is black lustrous crystals. Insol in water and alcohol.
beta, dark brown fluffy hexogonal crystal. Soluable in Alcohol.
Prep: Fletcher et. al.,
Nature 199, 1089 (1963)
This looks promiseing!
Regeneration of ruthenium catalysts.Patent DD146251
Abstract
An economical method for the regeneration of Ru or Ru compd. catalysts consists of treating the spent catalyst in a mineral acid at room temp. to the b.p. of the acid. Thus, RuCl3 was digested in 40% H2SO4, filtered, washed, and dried with acetone at 253 K. This catalyst was used to hydrate 4,4'-diaminodiphenylmethane at 303-313 K under 14.7 MPa to 100% efficiency vs. 6% for an unregenerated catalyst.
Ruthenium chloride catalyst for hydrogenation.Patent FR2526782
Abstract
Catalysts for the hydrogenation of sugars are prepd. by impregnating solid supports (preferably SiO2) with pure aq. RuCl3, drying, and reducing in H. Thus, Ru and NaCl in Cl at 600-650° gave Na2RuCl6 which was extd. with alc. in a Soxhlet app. to give pure RuCl3. Si02 was impregnated with 1% aq. RuCl3, dried, and reduced in H.
Reactions of sulfuryl chloride with metals. II. Platinum metals. Dillamore, I. M.; Edwards, Dennis Arthur.
J. Inorg. Nucl. Chem. (1969), 31(
, 2427-30.
Abstract
The Pt metals are converted to chlorides by reaction with SO2Cl2, in some cases the chloride isolated being dependent on reaction temp. b-PtCl2, PtCl4, b-Pd-Cl2, IrCl3, a-RuCl3, b-RuCl3, and OsCl4 have all been prepd. in virtually quant. yields within a reasonable reaction time, but RhCl3 is only formed extremely slowly from the metal by this method.
Isomerization of hexene-1 catalyzed by ruthenium(III), rhodium(III), and palladium(II) chlorides. Hirai, Hidefumi; Sawai, Hiroaki; Ochiai, Eiichiro; Makishima, Shoji.
J. Catal. (1970), 17(1), 119-20.
Abstract
The times required to reach equil. in the isomerization of BuCH:CH2 were RhCl3.3H2O 15, (PhCN)2-PdCl 150, and RuCl3.3H2O 1000 min. The Ru catalyst re-quired an induction time of .apprx.1 hr, during which Ru(III) was reduced to Ru(II) before isomerization began. The action of the Rh catalyst is attributed to the formation of (BuCH:CH2)4-Rh2Cl2. In Pd complexes, various ligands decreased the ac-tivity in the order Ph3P > Et3N > pyridine > quinoline > 1,3-cyclooctadiene.
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