Synthesis of ZSM-5 from Lampung natural zeolites as a source of silica-alumina, and cabocyl asudan additional source of silica, was performed by using an organic template of Tetra PropyludAmmonium Bromide (TPABr). The effects of molar ratios of SiO2/Al2O3 on the crystallinityudpercentage of ZSM-5 product was investigated in this synthesis. Synthesis was hydrothermallyudconducted in an autoclave at 180 oC, autogeneous pressure, and reaction time of 24 hours.udFormula for ZSM-5 Synthesis is Na- Al2O3-x SiO2-H2O-TPABr. The values of x as big as 40, 60, 80,ud100, dan 120 were varied in this research. Products of the synthesis were characterized byudmeans of X-ray diffraction method (XRD). Results of characterization indicated that ZSM-5 wasudformed as a primarily product for all molar ratios of SiO2/Al2O3, while there were still availableudZSM-11 dan SAPO-11 as intermediate products in metastable phase. The highest crystallinityudpercentage of ZSM-5 was obtained at molar ratio of SiO2/Al2O3 of 120 mol/mol as big as 120%.ududKeywords: synthesis of ZSM-5, TPABr template, molar ratio of SiO2/Al2O3.ud
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机译：通过使用四丙基溴化铵/溴化铵（TPABr）的有机模板，由楠榜天然沸石（作为二氧化硅-氧化铝的来源）和cabocyl作为二氧化硅的另一来源来合成ZSM-5。研究了SiO2 / Al2O3摩尔比对ZSM-5产物结晶度/结晶度的影响。在高压釜中于180 oC，自生压力和24小时反应时间对水进行合成热解。ZSM-5合成的分子式为Na-Al2O3-x SiO2-H2O-TPABr。在这项研究中，x的值分别为40、60、80， ud100和dan 120。通过X射线衍射法（XRD）对合成产物进行表征。表征结果表明，对于所有SiO2 / Al2O3摩尔比，ZSM-5都是主要产物，而亚稳相中仍然有udZSM-11和SAPO-11作为中间产物。 SiO2 / Al2O3的摩尔比高达120％时，ZSM-5的结晶度最高。 ud ud关键字：ZSM-5的合成，TPABr模板，SiO2 / Al2O3的摩尔比。 ud
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