The　grafting　reaction　of　tetramethyltin　on　the　surface　of　ZSM-5　zeolite　(Si:　A1　=　55.0)　was　studied　under　vacuum　conditions,　and　the　chemical　compositions,　structure　and　properties　of　the　resulting　solid　were　characterized　by　in　situ　FTIR,　ICP,　XRD,　XPS,　UV-vis　DRS,　temperature　programmed　decomposition　(TPD)　and　N2　adsorption.　The　results　show　that　the　reaction　occurs　on　the　surface　of　ZSM-5　zeolite　at　223　K　without　destroying　the　zeolite　framework.　The　BET　surface　area　and　the　pore　volume　of　the　zeolite　decrease　and　the　surface　properties　change;　however,　the　microporous　structure　is　retained　during　the　reaction　and　post　treatment.　Copyright　©　2006　John　Wiley　&　Sons,　Ltd.