【摘要】：P型分子篩在洗滌劑工業(yè)、石化工業(yè)、醫(yī)藥和環(huán)保工業(yè)等領(lǐng)域具有廣泛的應(yīng)用。為了探究粉煤灰制備P型分子篩過程中原料及產(chǎn)物的物相變化規(guī)律,用X射線多晶衍射儀(XRD)對粉煤灰、堿融產(chǎn)物及不同工藝參數(shù)條件下水熱法合成出的產(chǎn)物進行了物相分析。XRD分析結(jié)果表明,在m(粉煤灰)∶m(碳酸鈉)=1∶1.1、800℃煅燒2 h的條件下,能充分活化粉煤灰中的莫來石、石英等惰性相,得到高化學活性前驅(qū)粉體,其主要成分為NaAlSiO_4。在合成體系的n(SiO_2)/n(Al_2O_3)=3.5、n(H_2O)/n(Na_2O)=45、n(Na_2O)/n(SiO_2)=1.3、無老化步驟、在95℃水熱晶化時間為9 h的條件下,獲得的產(chǎn)物是純凈的P型分子篩。該法消耗了粉煤灰,實現(xiàn)了廢物的資源化利用,同時獲得了高附加值的產(chǎn)物P型分子篩。
[Abstract]:P-zeolite has been widely used in detergent industry, petrochemical industry, pharmaceutical industry and environmental protection industry. In order to investigate the phase changes of raw materials and products in the preparation of P-type molecular sieve from fly ash, the fly ash was studied by X-ray polycrystalline diffractometer (XRD). The alkali-melt product and the product synthesized by hydrothermal method under different technological parameters were analyzed. The results of XRD analysis showed that under the condition of m (fly ash): m (sodium carbonate) = 1: 1.1800 鈩，

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