曾茂荣,罗刚,王宇,费兆阳,郭海纬,汤吉海,陈献,崔咪芬,乔旭

• 1:南京工业大学材料化学工程国家重点实验室
• 2:南京工业大学化学化工学院
• 3:江苏飞亚化学工业有限责任公司

摘要(Abstract)：

采用季铵盐表面活性剂辅助模板法合成了一系列多级孔Hβ(H-Hβ)分子筛,通过XRD、XRF、SEM、TEM、N_2吸附-脱附、NH_3-TPD等表征方法对合成的H-Hβ分子筛物化性质进行分析,并在固定床反应器上对其催化苯胺缩合制二苯胺的性能进行了评价。结果表明,通过加入季铵盐表面活性剂,在合成的Hβ分子筛中成功引入了介孔,形成了微孔-介孔的复合孔道结构,增大了Hβ分子筛的孔容和孔径,有利于大分子的扩散。季铵盐表面活性剂碳链长度越长,合成的H-Hβ分子筛介孔孔容和孔径越大。相较于常规的Hβ分子筛(苯胺转化率为18.5%),H-Hβ分子筛可以显著提高苯胺转化率至31.0%~33.23%,二苯胺选择性都超过96%。另外,以十六烷基三甲基溴化铵为辅助试剂合成的H-Hβ分子筛随着硅铝比的减小,其酸量逐渐增多,苯胺转化率也逐渐提高,而选择性基本保持不变。

关键词(KeyWords)： 多级孔Hβ;季铵盐表面活性剂;硅铝比;苯胺;二苯胺

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金(21306089);; 省产学研前瞻性联合研究项目(BY2015005-02)

作者(Author): 曾茂荣,罗刚,王宇,费兆阳,郭海纬,汤吉海,陈献,崔咪芬,乔旭

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