文章摘要
苏炜,陈政利,韩娜,沈健,王雷,刘姝,杨丽娜.Fe-多级孔Hβ的制备及催化合成二苯甲烷性能[J].精细化工,2019,36(6):
Fe-多级孔Hβ的制备及催化合成二苯甲烷性能
Preparation and Catalytic Benzylation Performance of Fe-hierarchical Porous Hβ
投稿时间:2018-10-10  修订日期:2019-02-04
DOI:
中文关键词: 多级孔Hβ  制备  烷基化  二苯甲烷  性能
英文关键词: Hierarchical porous Hβ  preparation  alkylation  diphenylmethane  performance
基金项目:国家自然科学基金项目(面上项目)
作者单位E-mail
苏炜 辽宁石油化工大学 372549211@qq.com 
陈政利 辽宁石油化工大学  
韩娜 辽宁石油化工大学  
沈健 辽宁石油化工大学  
王雷 辽宁石油化工大学 wl20020121@163.com 
刘姝 辽宁石油化工大学  
杨丽娜 辽宁石油化工大学  
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中文摘要:
      用NaOH溶液对Hβ进行处理,得到多级孔Hβ分子筛。在0.1 mol/L碱浓度条件下,采用浸渍法制备Fe-多级孔Hβ分子筛。通过XRD、XRF、N2吸附-脱附、SEM-EDS、傅里叶红外转换光谱、NH3-TPD和Py-FTIR对样品进行表征。结果表明,适当的碱浓度处理在保持Hβ分子筛微孔骨架的同时,引入了介孔,Fe-多级孔Hβ分子筛仍能保持微介孔结构,活性组分Fe2O3能够很好地分散在载体表面。以苯和氯化苄为原料,考察其催化合成二苯甲烷的性能。与Fe-Hβ催化剂相比,Fe-多级孔Hβ有效地提高了反应物和产物的扩散性能,氯化苄的转化率、二苯甲烷的选择性分别提高了9.4%和3.2%,同时催化剂表现出良好的抗失活能力。
英文摘要:
      Hierarchical porous Hβ molecular sieve was obtained by alkaline treatment of NaOH solution for Hβ molecular sieve. Fe-hierarchical porous Hβ molecular sieve was prepared by impregnation method under the condition of 0.1 mol/L alkali concentration. The samples were characterized by XRD, XRF, N2 adsorption-desorption, SEM-EDS, Fourier transform infrared spectroscopy, NH3-TPD and Py-FTIR. The results showed that the samples with the proper alkali concentration treatment could maintain the microporous framework of Hβ molecular sieve while mesopore was introduced. Fe-hierarchical porous Hβ molecular sieve also could maintain the micro-mesoporous structure, and the active component Fe2O3 could be well dispersed on the surface of the carrier. The benzene and benzyl chloride were used to investigate the performance of Fe-hierarchical porous Hβ in the synthesis of diphenylmethane reaction. Compared with the Fe-Hβ catalyst, Fe-hierarchical porous Hβ effectively improved the diffusion performance of the reactants and products. The conversion of benzyl chloride and the selectivity of diphenylmethane increased by 9.4% and 3.2%. In the meantime, the catalyst showed excellent anti-deactivation ability.
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