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第 36 卷第 6 期                             精   细   化   工                                  Vol.36, No.6
             201 9 年 6 月                             FINE CHEMICALS                                 June    2019


              催化与分离提纯技术
                   Fe-多级孔 Hβ 的制备及催化合成二苯甲烷性能



                                                                           *
                      苏   炜,陈政利,韩   娜,沈   健,王   雷 ,刘   姝,杨丽娜
                                    (辽宁石油化工大学  石油化工学院,辽宁  抚顺    113001)


                 摘要:用 NaOH 溶液对 Hβ 进行处理,得到多级孔 Hβ 分子筛。在 0.10 mol/L 碱浓度下,采用浸渍法制备 Fe-多
                 级孔 Hβ 分子筛(Fe-Hβ-B 0.10 )。通过 XRD、XRF、N 2 吸附-脱附、SEM-EDS、傅里叶变换红外光谱、NH 3 -TPD
                 和 Py-FTIR 对样品进行了表征。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 Fe 2 O 3 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-B 0 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%。Fe-多级孔 Hβ 催化剂重复使用 3 次后仍然
                 保持较好的催化活性。
                 关键词:多级孔 Hβ;制备;烷基化;二苯甲烷;催化技术
                 中图分类号:TQ426.94      文献标识码:A      文章编号:1003-5214 (2019) 06-1118-06



                            Preparation and Catalytic Benzylation Performance of
                                             Fe-hierarchical Porous Hβ


                                                                            *
                       SU Wei, CHEN Zheng-li, HAN Na, SHEN Jian, WANG Lei , LIU Shu, YANG Li-na
                      (College of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, Liaoning, China)


                 Abstract: Hierarchical porous Hβ molecular sieve was obtained by treating Hβ molecular sieve with NaOH
                 solution. Fe-hierarchical porous Hβ molecular sieve was prepared by impregnation method in 0.10 mol/L
                 alkali solution. The samples were characterized by XRD, XRF, N 2 adsorption-desorption, SEM-EDS, FTIR,
                 NH 3-TPD  and  Py-FTIR.  The  results  showed  that  proper  alkali  concentration  treatment  could  not  only
                 maintain the microporous framework of Hβ molecular sieve, but also introduce mesopores. Fe-hierarchical
                 porous Hβ molecular sieve also could maintain the micro-mesoporous structure, and the active component
                 Fe 2O 3 could be well dispersed on the surface of the carrier. The catalytic synthesis of diphenylmethane from
                 benzene  and  benzyl  chloride  was  studied.  Compared  with  Fe-Hβ-B 0  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  were  increased  by  9.4%  and  3.2%,  respectively.
                 Fe-hierarchical porous Hβ still maintained good catalytic activity after repeated use for 3 times.
                 Key words: hierarchical porous Hβ; preparation; alkylation; diphenylmethane; catalysis technology
                 Foundation  items:  National  Natural  Science  Foundation  of  China  (21276120);  Program  for  Liaoning
                 Excellent  Talents  in  University  (LJQ2015062);  Program  of  Department  of  Science  &  Technology  of
                 Liaoning Province (20170540585)


                                                                   [1]
                 二苯甲烷(简写 DMP)是一种重要的医药中间                        香剂 。目前,工业上采用苯与氯化苄的苄基化反
            体,也是许多精细化学品的关键相关物质,可作为                             应生成二苯甲烷。典型的苄基化反应可以通过液体
                                                                                      [2]
            农药杀虫剂的增效剂,也可以在香料行业中制造保                             酸,如硫酸、氢氟酸进行 。由于这些催化剂在使


                 收稿日期:2018-10-10;  定用日期:2019-02-12; DOI: 10.13550/j.jxhg.20180742
                 基金项目:国家自然科学基金(21276120);辽宁省高等学校杰出青年学者成长计划(LJQ2015062);辽宁省科学技术厅项目
                 (20170540585)
                 作者简介:苏   炜(1992—),男,硕士生,E-mail:372549211@qq.com。联系人:王   雷(1963—),女,教授,E-mail:
                 wl20020121@163.com。
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