CAJ | 학술논문

对比考察了模板剂的种类、晶化温度以及铝含量等影响因素对超细ZSM-5分子筛晶化行为的影响,采用扫描电镜（SEM）、透射电镜（TEM）和X射线衍射光谱（XRD）技术对所制备的超细产物的结构及形貌进行了表征。结果表明,模板剂的种类对分子筛的晶化过程有重要影响,四丙基氢氧化铵是优良的制备超细ZSM-5分子筛的模板剂;以四丙基氢氧化铵为模板剂,适宜采用静态法制备超细ZSM-5分子筛的晶化温度为70～120℃;凝胶体系中铝的存在抑制ZSM-5分子筛晶核的生长,无铝条件下,分子筛的晶化速度最快;随着铝含量的增加,分子筛的晶化速度变慢,在相同的晶化时间内,生成的分子筛的粒径更小。
대비고찰료모판제적충류、정화온도이급려함량등영향인소대초세ZSM-5분자사정화행위적영향,채용소묘전경（SEM）、투사전경（TEM）화X사선연사광보（XRD）기술대소제비적초세산물적결구급형모진행료표정。결과표명,모판제적충류대분자사적정화과정유중요영향,사병기경양화안시우량적제비초세ZSM-5분자사적모판제;이사병기경양화안위모판제,괄의채용정태법제비초세ZSM-5분자사적정화온도위70～120℃;응효체계중려적존재억제ZSM-5분자사정핵적생장,무려조건하,분자사적정화속도최쾌;수착려함량적증가,분자사적정화속도변만,재상동적정화시간내,생성적분자사적립경경소。
The influence of different types of structure-directing agents（SDA）,crystallization temperature and content of alumina source on the crystallization of ultra-fine ZSM-5 zeolite was studied.Scanning electron microscope（SEM）,transmitting electronic microscopy（TEM） and X-rays diffraction（XRD） techniques were used to characterize the morphology of the ultra-fine zeolite.The results indicated that the type of SDA had great influence on the crystallization of zeolite.Tetrapropylammonium hydroxide（TPAOH） acted as an excellent SDA for the preparation of ultra-fine ZSM-5 zeolite.Comparatively,the proper temperature for the static crystallization of ultra-fine crystals was in the range from 70 ℃ to 120 ℃ with TPAOH as the SDA.The existence of alumina in the sol-gel inhibited the formation of the crystal nuclei of ZSM-5 zeolite.As a result,without the addition of alumina source,crystallization of zeolite was much faster than that with the existence of alumina source,while an increase in the content of alumina source led to slower crystallization and a much smaller crystal size of zeolite crystallized at the same time of crystallization.