唐志诚.低成本原料一步直接合成小晶粒ZSM-5分子筛[J].分子催化编辑部,2013,(3):227-234
低成本原料一步直接合成小晶粒ZSM-5分子筛
Low cost raw material for one step synthesis of small crystal ZSM-5 molecular sieve
投稿时间:2013-03-29  修订日期:2013-06-13
DOI:
中文关键词:  小晶粒分子筛  ZSM-5  合成  
英文关键词:Small crystal molecular sieve  ZSM-5  Synthesis  
基金项目:
作者单位E-mail
唐志诚 中国科学院兰州化学物理研究所 tangzhicheng@licp.cas.cn 
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中文摘要:
      以硫酸铝、水玻璃、正丁胺、水、晶种、NaCl、浓硫酸等低成本试剂为原料,一步直接合成法制备了高结晶度小晶粒ZSM-5分子筛,详细考察了凝胶陈化方式、滴加顺序、晶化时间、晶化温度、水量及原料硅铝比对分子筛结晶度及粒度的影响。通过XRD、SEM等对合成的分子筛进行了详细表征。研究结果表明:采用低温水浴回流搅拌陈化方式、在160~170℃、晶化30h可获得高结晶度小晶粒ZSM-5分子筛。正反加顺序对分子筛结晶度影响不大。
英文摘要:
      In this paper, high crystallinity small crystal ZSM-5 molecular sieves were prepared by one step direct synthesis method using low cost raw materials such as aluminum sulfate, water glass, n-butylamine, water, seed, NaCl, concentrated sulfuric acid, etc. Effect of gel aging process, solution addition sequence, crystallization time, crystallization temperature, water content and SiO2/Al2O3 ratio on the crystallinity and crystal size of molecular sieve were investigated. By means of XRD and SEM on the characterization of synthesized ZSM-5 molecular sieve was investigated in detailed. Research results showed that a high crystallinity small crystal ZSM-5 molecular sieve were obtained under the crystallization condition of 160~170℃ for 30h with low temperature water bath reflux stir-aging method. The solution addition sequence has little effect on the crystallinity of molecular sieve.
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