Platinum group metals INDEX

Several platinum compounds, including trimethylplatinum derivatives, are explosively unstable. Some compounds of the other platinum group metals are also of limited stability. Individually indexed compounds are Amminedecahydroxydiplatinum, 4588 Amminepentahydroxyplatinum, 4566 Ammonium hexachloroplatinate, 4180 Ammonium tetranitroplatinate(II), 4573 Diacetatoplatinum(II) nitrate, 1507 Diamminedichloroamidotrichloroplatinum(IV), 4173... 

International Platinum Group Metals Association. Iridium. http //www. ipa news.com/pgm/iridium/index.htm (accessed February 9, 2010). 

Prior to solving the structure for SSZ-31, the catalytic conversion of hydrocarbons provided information about the pore structure such as the constraint index that was determined to be between 0.9 and 1.0 (45, 46). Additionally, the conversion of m-xylene over SSZ-31 resulted in a para/ortho selectivity of <1 consistent with a ID channel-type zeolite (47). The acidic NCL-1 has also been found to catalyze the Fries rearrangement of phenyl acetate (48). The nature of the acid sites has recently been evaluated using pyridine and ammonia adsorption (49). Both Br0nsted and Lewis acid sites are observed where Fourier transform-infrared (FT IR) spectra show the hydroxyl groups associated with the Brpnsted acid sites are at 3628 and 3598 cm-1. The SSZ-31 structure has also been modified with platinum metal and found to be a good reforming catalyst. 

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