8523
We recently introduced a new method to synthesize an active and stable Pt catalyst , namely thermo - destabilization of microemulsions ( see R . Y . Parapat , V . Parwoto , M . Schwarze , B . Zhang , D . S . Su and R . Schom a cker , J . Mater . Chem . , 2012 , 22 ( 23 ) , 11605 - 11614 ) .
 Chemical: Pt
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Pt 
Answer:
 Chemical: Pt