论文部分内容阅读
作者研究在不同反应混合物系统中ZSM-5沸石的自发结晶作用与非自发结晶作用时发现,含甲胺的系统比含其他有机碱的系统更容易生成丝光沸石。通过对甲胺-Na_2O-SiO_2-Al_2O_3-H_2O反应混合物系统的自发结晶的进一步研究,作出了配比-产物组成图。结果表明,在甲胺系统中,含氮的丝光沸石,即甲胺-丝光沸石(MA-Md),能在相当宽的配比范围内生成。MA-Md虽然与丝光沸石(NaM)骨架结构相同,但它的阳离子中约有一半系甲胺离子。它的某些性质也不同于NaM,例如:硅铝比提高;晶格收
The authors investigated the spontaneous and non-spontaneous crystallization of ZSM-5 zeolites in different reaction mixture systems and found that methanamine-containing systems are more prone to mordenite formation than systems containing other organic bases. Through the further study on the spontaneous crystallization of the methylamine-Na 2 O-SiO 2 -Al 2 O 3 -H 2 O reaction mixture system, the composition of the product was obtained. The results show that in the methylamine system, the nitrogen-containing mordenite, ie, methylamine-mordenite (MA-Md), can be formed over a wide range of ratios. Although MA-Md has the same framework structure as mordenite (NaM), about half of its cations are methylamine ions. Some of its properties are also different from those of NaM, for example: increasing the Si / Al ratio;