我的比例是12Na2O:100SiO2:2Al2O3:2500H2O
硅源是TEOS,铝源是铝酸钠,还加入了水和氢氧化钠
我的合成步骤是:(1)称取一定量的铝酸钠,氢氧化钠,加入水溶解(2)将硅溶胶滴加入1中,混合搅拌5h,转移至水热釜中 。(3)然后我会把水热釜放在水浴锅里室温搅拌24h(4)再将水热釜放入烘箱中,180度水热24小时(5)110度烘干,再用离子交换
文章(2),(3)中说Prior to being transferred to a Teflon-lined stainless steel autoclave the above synthesis mixture was mixed continously at 200rpm and aged for some time at room temperature.Then it was hydrothermally washed with deionized water,dried at 373K
大家帮我看看我的(2),(3)步有没有问题,我觉得老化是不动的,但是文献中说要搅拌
我说的活性差是第一个小时转化率还行,第二个小时就不好了