Sponge-like catalyst (graphic illustration) (IMAGE) RMIT University Caption A graphic illustration showing how the catalyst performs several chemical reactions in sequence within a single catalyst particle, with molecules entering the sponge through the large pores (macropore) then passing into smaller pores (mesopore). Credit RMIT University Usage Restrictions Credit RMIT University License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.