کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1490948 | 992337 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of ZSM-23/ZSM-22 intergrowth zeolite with a novel dual-template strategy Synthesis of ZSM-23/ZSM-22 intergrowth zeolite with a novel dual-template strategy](/preview/png/1490948.png)
ZSM-23/ZSM-22 intergrowth zeolite with fixed proportion of 60%ZSM-23/40%ZSM-22 has been synthesized with a novel dual-template strategy. The products were characterized by X-ray diffraction and scanning electron microscopy. Dimethylamine and diethylamine were used together as a dual-template system. The molar ratio of diethylamine to dimethylamine, which was changed with the type of aluminum source, was the key factor for the synthesis of intergrowth zeolites. A molar ratio of diethylamine to dimethylamine of 1:24 could result in an ZSM-23/ZSM-22 intergrowth zeolite if aluminum sulfate was used as aluminum source, whereas a molar ratio of diethylamine to dimethylamine of 1:12 was required to get an ZSM-23/ZSM-22 intergrowth zeolite if sodium metaaluminate was used. Furthermore, fluoride anion could be involved in the process as a crystallization promoter.
Journal: Materials Research Bulletin - Volume 44, Issue 12, December 2009, Pages 2258–2261