This looks interesting: Separation of Platinum and Palladium

[Scott2357]

Separation of platinum and palladium with silicone-rubber foam treated with dimethylglyoxime

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6THP-44JM6MT-5R&_user=10&_coverDate=05%2F31%2F1975&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1252248759&_rerunOrigin=google&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=5b0e2624083dec0b18d78f79ac268679

 

[Irons]

Separation of platinum and palladium with silicone-rubber foam treated with dimethylglyoxime

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6THP-44JM6MT-5R&_user=10&_coverDate=05%2F31%2F1975&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1252248759&_rerunOrigin=google&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=5b0e2624083dec0b18d78f79ac268679

If you were trying to remove the last traces of Pd from Pt, it might be a good idea. For recovery of Pd in quantity, not so good. IMHO