Department of Chemistry and Biochemistry, Bradley University, Peoria, IL 61625, USA.
J Colloid Interface Sci. 2011 Aug 1;360(1):309-12. doi: 10.1016/j.jcis.2011.04.061. Epub 2011 Apr 27.
The presence of unreacted silanes within cured polydimethylsiloxane (PDMS) leads to the reduction of tetrachloropalladate(II) ions, generating encapsulated palladium colloids. The resulting colloids had varied morphology and were typically less than 80 nm in size. The Pd/PDMS vessels, which contained 0.10±0.01% Pd, were effective catalysts for the hydrogenation of carbon-carbon multiple bonds for at least ten successive runs with no loss of catalytic activity, and the catalyst does not exhibit the same pyrophoric behavior as Pd on carbon after use in hydrogenation reactions. In addition, storage of previously used Pd/PDMS vessels for 6 months in air did not affect the catalytic activity, and the overall morphology of the catalysts after use was the same as those that have not been involved in catalytic reactions.
在固化的聚二甲基硅氧烷 (PDMS) 中存在未反应的硅烷，导致四氯钯 (II) 离子减少，生成包裹的钯胶体。得到的胶体具有不同的形态，通常小于 80nm。含有 0.10±0.01%Pd 的 Pd/PDMS 容器是碳-碳多重键氢化的有效催化剂，至少连续进行了十次反应，没有失去催化活性，并且催化剂在氢化反应后不像 Pd 负载在碳上那样表现出同样的自燃行为。此外，将先前使用过的 Pd/PDMS 容器在空气中储存 6 个月，不会影响催化活性，并且使用后的催化剂的整体形态与未参与催化反应的催化剂相同。
