Synthesis of high-silica-content mordenite with different SiO2/Al2O3 ratios by using benzene-1,2-diol as additives
Synthesis of high-silica-content mordenite with different SiO2/Al2O3 ratios by using benzene-1,2-diol as additives
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DOI：
10.1016/s0167-577x(02)00411-1
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发表时间：
2002-09
影响因子：
3
通讯作者：
C. Shao;H. Kim;Xiangdan Li;Soojin Park;Duck-Rae Lee
中科院分区：
文献类型：
--
作者：
C. Shao;H. Kim;Xiangdan Li;Soojin Park;Duck-Rae Lee
通过向体系中添加1,2-苯二醇10SiO2:Al2O3:3Na2O:500H2O:(0-5.0)C6H6O2(C6H6O2:苯-1,2-二醇)制备了不同SiO2/Al2O3比(10.8~32.2)的高硅含量丝光沸石。实验结果表明，反应混合物中1,2-苯二醇的含量对丝光沸石晶体的硅铝比和结晶率影响较大。通过27Al NMR和29Si NMR研究了1,2-苯二醇在反应混合物中的作用，结果表明反应体系中可能形成了铝-1,2-苯二醇络合物，这可能是形成高硅含量丝光沸石的原因。
High-silica-content mordenite with different SiO2/Al2O3ratios (10.8–32.2) was prepared by the addition of benzene-1,2-diol into the system, 10SiO2:Al2O3:3Na2O:500H2O:(0–5.0)C6H6O2(C6H6O2: benzene-1,2-diol). Experimental results showed that the content of benzene-1,2-diol in the reaction mixture largely influenced the ratios of silicon to aluminium of mordenite crystals and the crystallinity rate. The role of benzene-1,2-diol in the reaction mixture was investigated by27Al NMR and29Si NMR, and it was shown that an aluminium–benzene-1,2-diol complex was possibly formed in the reaction system, which may be responsible for the formation of high-silica-content mordenite.