A　scrics　of　TS-1　zeolites　were　prepared　by　varying　the　addilions　of　seeds.　The　physicochemical　properties　of　the　synthesized　TS-1　zeolites　were　systematically　characterized　by　several　analytical　techniques,　including　X-ray　diffraction,　scanning　electron　microscopy,　UV　visiblc　diffuser　reflectance　spectroscopy,　Fourier　transformed　infrared　spectroscopy,　X-ray　fluorescence　spectroscopy　and　solid-statc　nuclcar　magnetie　resonance　spectroscopy.　Morcovcr,　the　catalytic　Performance　and　regeneration　properties　of　the　synthesized　TS-1　zeolites　in　the　one-step　synthesis　of　ethylene　glycol　(EG)　from　ethylene　was　thoroughly　evaluated.　The　results　demonstrate　that　the　addition　of　seeds　can　help　improve　the　crystallinity　of　the　synthesized　samplcs.　Spccifically,　when　the　seeds　mass　fraction　is　5%,　the　synthesized　TS-1　zcolitc　owns　the　highest　Proportion　of　open　framework　titanium　Ti—OH(HO—Si)3　species　and　strong　Lewis　aeid　strength.　When　used　in　the　one-step　synthesis　of　EG　from　ethylene,　this　TS-1　zcolite　exhibits　excellcnt　catalytic　Performance,　i.　e.,　under　the　dosagc　of　catalyst　of　0.　3　g,　ethylene　pressure　of　2.　5　MPa,　and　temperaturc　of　60　°C,　H2()2　conversion　rate　is　91.1%,　H202　utilization　rate　is　87.2%,　and　EG　selectivity　is　89.　8%.　Furthermore,　through　investigating　the　regeneration　properties　of　zeolites,　it　is　found　that　thc　synthesized　optimal　TS-1　zcolitc　can　be　regenerated　by　calcination,　and　its　catalytic　Performance　remains　basically　stablc　aftcr　bcing　rcuscd　for　5　times　in　thc　one-step　synthesis　of　EG　from　ethylene.　©　2025　Editorial　Office　of　Acta　Petrolei　Sinica.　All　rights　reserved.