• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索

author:

Xu, Songlin (Xu, Songlin.) [1] | Zhang, Mingyi (Zhang, Mingyi.) [2] | Guo, Shujuan (Guo, Shujuan.) [3] | Li, Mengru (Li, Mengru.) [4] | Huang, Qingming (Huang, Qingming.) [5] (Scholars:黄清明) | Chen, Xiaohui (Chen, Xiaohui.) [6] (Scholars:陈晓晖)

Indexed by:

EI Scopus SCIE

Abstract:

Diffusion limitation caused by microporous molecular sieves has always been a bottleneck problem in liquid phase epoxidation. In this study, several different carbon sources were used as hard templates to prepare hierarchically porous zeolite Ti-MWW (cTi-MWW) successfully. Compared with conventional Ti-MWW, cTi-MWW has an additional hierarchically porous structure and abundant pore structure distribution. Especially, the cTi-MWW prepared with polyethylene glycol1540 (PEG) as the hard template not only has a multiple hierarchically porous structure, but also exhibits small crystal size and good hydrophobicity properties studied by TEM and in situ FT-IR. At the same time, the cTi-MWW prepared with PEG exhibits better activity than the conventional Ti-MWW in the selective epoxidation reaction of allyl alcohol (AAL) with H2O2 as oxidant and the conversion is improved by 11% (Si/Ti = 20). And a higher efficiency and longer catalyst life in fixed-bed catalytic reactor were exhibited by using cTi-MWWPEG as catalyst. The physicochemical properties of cTi-MWW prepared with different hard templates were systematically studied by SEM, XPS, UV-Vis, XRD and N-2 absorption-desorption techniques. This method is effective for the synthesis of cTi-MWW and significant for the preparation of hierarchically porous zeolites in industrial production. Graphic Abstract A hierarchically porous zeolite Ti-MWW prepared with different hard templates successfully. With the hierarchically porous structure, which have better adsorption, diffusion, and reactivity in liquid phase epoxidation, thus improving the catalytic activity. Especially, the hierarchically porous zeolite Ti-MWW prepared with polyethylene glycol exhibits small crystal size and good hydrophobicity properties. [GRAPHICS] .

Keyword:

Diffusion Glycidol Hard template Hierarchically porous Ti-MWW

Community:

  • [ 1 ] [Xu, Songlin]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Sch Chem Engn, Fuzhou 350002, Fujian, Peoples R China
  • [ 2 ] [Zhang, Mingyi]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Sch Chem Engn, Fuzhou 350002, Fujian, Peoples R China
  • [ 3 ] [Guo, Shujuan]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Sch Chem Engn, Fuzhou 350002, Fujian, Peoples R China
  • [ 4 ] [Li, Mengru]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Sch Chem Engn, Fuzhou 350002, Fujian, Peoples R China
  • [ 5 ] [Chen, Xiaohui]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Sch Chem Engn, Fuzhou 350002, Fujian, Peoples R China
  • [ 6 ] [Guo, Shujuan]Minjiang Univ, Ocean Coll, Fuzhou 350108, Fujian, Peoples R China
  • [ 7 ] [Huang, Qingming]Fuzhou Univ, Testing Ctr, Fuzhou 350116, Fujian, Peoples R China

Reprint 's Address:

  • 陈晓晖

    [Chen, Xiaohui]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Sch Chem Engn, Fuzhou 350002, Fujian, Peoples R China

Show more details

Related Keywords:

Source :

CATALYSIS LETTERS

ISSN: 1011-372X

Year: 2020

Issue: 1

Volume: 150

Page: 209-221

3 . 1 8 6

JCR@2020

2 . 3 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:160

JCR Journal Grade:3

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

Online/Total:228/10052658
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1