Preparation of Pillared Montmorillonite with Enriched Pillars

摘要: Summary Montmorillonite intercalated with Al-polyoxycations, which will be called pillared montmorillonite, had extremely small cation exchange capacity(CEC) compared the original montmorillonite. The CEC of montmorillonite changed a little by heat treatment in stream nitrogen. When treated ammonia, however, it pronouncedly increased. Thus obtained was re-intercalated Al-polyoxycations to give having larger number disproportionation 1,2,4-trimethylbenzene(1,2,4-TrMB) decreased increasing pillars, favored formation 1,2,4,5-tetramethylbenzene(1,2,4,5-TeMB) smallest molecular dimension among TeMB isomers. These results can interpreted increased shape selective property enrichment pillars.