کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5468612 | 1519044 | 2017 | 7 صفحه PDF | دانلود رایگان |
Research Highlights
- A generic route for preparing in-situ crystallized zeolite/kaolin composite was developed;
- The alkali solution aided activation can high-effectively activate kaolin microspheres;
- The synthesized composites have high zeolite content yet outstanding attrition index;
- And the resulting composites show superior activity in fluid catalytic cracking.
We present an alkali solution aided (ASA) activation approach to activate kaolin microspheres and its application to synthesize in-situ crystallized zeolite/kaolin composite materials. Compared with conventional thermal activation methods, the ASA activation can high-effectively convert silicon and aluminum species in kaolin microspheres into active silica and alumina for synthesizing zeolite/kaolin composites, leading to a successful synthesis of zeolite/kaolin composites with high zeolite content and outstanding attrition resistance. When used as a fluid catalytic cracking catalyst, the resulting zeolite Y/kaolin composite gave high conversion efficiency of vacuum oil and high selectivity to valuable products.
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Journal: Applied Clay Science - Volume 144, August 2017, Pages 150-156