摘要
为探究煤矸石合成沸石分子筛的最优工艺,以煤矸石为主要原料,采用传统水浴加热与微波辅助加热的方法,合成4A型沸石分子筛与P型沸石分子筛,利用电子显微镜和X射线衍射,对其形貌和结构进行分析表征。实验通过制备相同的沸石分子筛,得出制备沸石分子筛的煤矸石需要高岭石含量较高、有害杂质含量较低及较为合适的粒径(3μm~50μm)。相较于传统水浴加热,微波辅助加热得到的沸石分子筛纯度低,但加热时间仅需30 min~40 min,而传统水浴加热合成需要24 h,同时微波辅助加热还提高了沸石分子筛反应速率和分散度。
In order to explore the optimal process for the synthesis of zeolite molecular sieve from coal gangue,with coal gangue as the main raw material,4 A zeolite molecular sieve and P zeolite molecular sieve were synthesized by the traditional water bath heating method and the microwave-assisted heating method.The morphology and structure were characterized by electron microscopy and X-ray diffraction.By preparing the same zeolite molecular sieve,it was concluded that coal gangue prepared for the zeolite molecular sieve required higher kaolinite content,lower harmful impurity content,and suitable particle size(3 μm-50 μm).Compared with the traditional water bath heating method,the microwave-assisted heating method of the zeolite molecular sieve was low in purity,but the microwave-assisted heating time was very short,only about 30 min-40 min,while the traditional water bath heating synthesis took 24 h.At the same time,the reaction rate and dispersion of the zeolite molecular sieve were also improved.
引文
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