Effect of thermal treatment of the support of platinum/palygorskite catalysts on hydrogen chemisorption
作者： Fernando González , Carmen Pesquera , Inmaculada Benito
DOI: 10.1016/0926-860X(92)80058-K
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摘要: Abstract Platinum catalysts were prepared on a palygorskite support using the method of adsorption in solution or ion-exchange, with platinum ammonia complex. The supports used natural and treated thermally at 500° C. results obtained by hydrogen chemisorption for former showed poorer dispersion fibrous clay material; we argue that these can be interpreted if take into account there is migration complex through structural channels clay. After reduction catalyst 400°C, metal phase occluded not accessible because structure silicate folds closes off channels. When calcined 500°C, folding has already taken place before incorporation platinum.
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