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author:

Guo, S. (Guo, S..) [1] | Zhang, Y. (Zhang, Y..) [2] | Ye, Y. (Ye, Y..) [3] | Song, J. (Song, J..) [4] | Li, M. (Li, M..) [5]

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Scopus

Abstract:

Synthesis of a Ti-incorporated zeolite using a simple and economical method has recently become a focus of attention. The direct hydrothermal synthesis of Ti-MWW is most commonly applied; however, it is challenging to perform and exhibits low titanium utilization. An innovative strategy of synthesizing Ti-MWW is proposed in the present study by simply treating the ERB-1 precursor of an MWW-type boron silicate with a H2TiF6/HNO3 solution. This significantly shortens the Ti grafting process from 5 days to only a few hours and reduces the use of the structure-directing agent hexamethyleneimine (HMI); furthermore, no extraframework Ti is observed in the precursor, indicating good atomic economy. Typically, a piperidine (PI)-treated sample Ti-MWW2-1-PI exhibits a higher conversion (76.6%) than the original Ti-MWW (44.8%) in the epoxidation of 1-hexene. X-ray diffraction (XRD), inductively coupled plasma (ICP), and transmission electron microscopy (TEM) techniques are used to explain in detail the probable mechanism underlying the incorporation of Ti species into the MWW framework. X-ray photoelectron spectroscopy (XPS) is employed to study the coordinate state of the Ti and F species in the samples after treatment with a piperidine solution. This method can be applied to synthesize other kinds of lamellar-structured zeolites with heteroatoms. Copyright © 2020 American Chemical Society.

Keyword:

Community:

  • [ 1 ] [Guo, S.]Ocean College, Minjiang University, Fuzhou, Fujian 350108, China
  • [ 2 ] [Zhang, Y.]Ocean College, Minjiang University, Fuzhou, Fujian 350108, China
  • [ 3 ] [Ye, Y.]Ocean College, Minjiang University, Fuzhou, Fujian 350108, China
  • [ 4 ] [Song, J.]Ocean College, Minjiang University, Fuzhou, Fujian 350108, China
  • [ 5 ] [Li, M.]School of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350116, China

Reprint 's Address:

  • [Guo, S.]Ocean College, Minjiang UniversityChina

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Source :

ACS Omega

ISSN: 2470-1343

Year: 2020

Issue: 17

Volume: 5

Page: 9912-9919

3 . 5 1 2

JCR@2020

3 . 7 0 0

JCR@2023

ESI HC Threshold:160

JCR Journal Grade:2

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 9

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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