Nanosol　precursor　was　obtained　via　hydrothermal　pre-crystallization　time　periods　of　6,　60　and　102　h　at　423　K.　Different　amounts　of　nanosol　precursor　with　different　crystallization　time　periods　were　added　to　the　hydrothermal　synthesis　system　as　structural　promoter　(SP)　to　synthesize　clinoptilolite.　The　various　characterizations　such　as　XRD,　SEM,　BET,　FT-IR,　TG-DSC,　ICP,　UV-Raman,　and　element　analysis　were　employed　to　investigate　the　structural　and　textural　characteristics　and　potential　applications　of　synthetic　clinoptilolites　in　CH4/N-2　separation.　Their　activation　energies　of　induction　(E-n)　and　growth　(E-g)　periods　during　crystallization　intervals　were　calculated　according　to　Arrhenius　equation,　where　the　former　being　much　larger　than　the　latter　proved　that　nucleation　is　the　key　in　the　synthesis　of　clinoptilolite.　The　E-n　value　gradually　decreased　with　increasing　amount　of　the　SP　and　its　pre-crystallization　time　interval,　which　further　revealed　that　the　addition　of　SP　with　the　shortened　crystallization　time　is　beneficial　in　the　formation　of　crystal　nuclei.　However,　the　amount　of　SP　significantly　altered　the　particle　size,　extent　of　impurities　(phillipsite),　and　thermal　stability　of　the　clinoptilolite.　The　results　demonstrated　that　pure　clinoptilolite　could　be　successfully　synthesized　in　a　short　time　period　at　low　temperature.　Particularly,　the　ion　exchange　performance　and　CH4/N-2　separation　capacity　of　clinoptilolite　synthesized　with　the　additive　SP　(3　wt　%)　in　the　pre-crystallization　interval　of　60　h　were　found　almost　in　similarity　with　the　clinoptilolite　prepared　without　SP,　showing　a　promising　adsorbent　for　kinetic　separation　of　CH4/N-2.