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以硅酸钠为硅源、偏铝酸钠为铝源、十六烷基三甲基溴化铵为模板剂,两步水热法合成出了有序性好、热稳定性与水热稳定性高的介孔分子筛。XRD、AFM、TG、RT-IR、BET 比表面和孔径测定以及热稳定性和水热稳定性研究表明:制得了粒径为30～50nm 的纳米级介孔分子筛,并且所制备介孔分子筛的比表面积大于800m~2/g;在1123K 以上热稳定性好;100℃水热处理10天后有序性、孔径和比表面都没有明显的变化。负载 Pt 样品对苯加氢反应的催化性能研究表明,反应温度250℃、3.0MPa 下,载 Pt 样品的苯加氢活性和选择性都接近100%.连续反应30h催化活性没有明显的降低。
Using sodium silicate as the silicon source, sodium aluminate as the aluminum source and cetyltrimethylammonium bromide as the template, two steps of hydrothermal synthesis of the ordered, thermal stability and hydrothermal stability High-quality mesoporous molecular sieve. The results of XRD, AFM, TG, RT-IR, BET specific surface area and pore size, thermal stability and hydrothermal stability show that nano-sized mesoporous molecular sieves with particle size of 30-50nm have been prepared, and the prepared mesoporous molecular sieves The specific surface area is more than 800m ~ 2 / g; the thermal stability is better than 1123K; the orderliness after hydrothermal treatment at 100 ℃ for 10 days shows no obvious change of pore size and specific surface area. The catalytic performance of Pt-loaded Pt on the hydrogenation of benzene showed that the hydrogenation activity and selectivity of Pt-loaded Pt were both close to 100% at 250 ℃ and 3.0MPa, and the catalytic activity did not decrease after 30h of continuous reaction.