Preparation of Co- or Mn-substituted LTL zeolites and their catalytic properties in cyclohexane oxidation

Kai Xue; Boting Yang; Peng Wu

doi:10.1007/s11426-014-5248-y

Preparation of Co- or Mn-substituted LTL zeolites and their catalytic properties in cyclohexane oxidation

Kai Xue
, Boting Yang
, Peng Wu^*

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Co- or Mn-substituted LTL zeolites were hydrothermally synthesized by a novel organic-ligand-assisted method. XRD, UV-Vis DRS, XPS, and EPR techniques verified that the Co and Mn ions were incorporated into the zeolite framework. No organic species were retained in as-synthesized Co or Mn-LTL zeolites, which resulted in porous materials without calcination. In the oxidation of cyclohexane with tert-butyl hydroperoxide (TBHP), the Co-LTL and Mn-LTL gave a 40%-48% KA oil (cyclohexanone and cyclohexanol) yield as well as nearly 100% TBHP conversion under mild reaction conditions. The reactions were confirmed to be heterogeneous and to have proceeded catalytically. No loss of catalytic activity or leaching of metal active sites ions were observed during 4 reuses.

Original language	English
Pages (from-to)	139-147
Number of pages	9
Journal	Science China Chemistry
Volume	58
Issue number	1
DOIs	https://doi.org/10.1007/s11426-014-5248-y
State	Published - Jan 2015

Keywords

Co-LTL
KA oil
Mn-LTL
cyclohexane oxidation
metallosilicate
triethanolamine

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10.1007/s11426-014-5248-y

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title = "Preparation of Co- or Mn-substituted LTL zeolites and their catalytic properties in cyclohexane oxidation",

abstract = "Co- or Mn-substituted LTL zeolites were hydrothermally synthesized by a novel organic-ligand-assisted method. XRD, UV-Vis DRS, XPS, and EPR techniques verified that the Co and Mn ions were incorporated into the zeolite framework. No organic species were retained in as-synthesized Co or Mn-LTL zeolites, which resulted in porous materials without calcination. In the oxidation of cyclohexane with tert-butyl hydroperoxide (TBHP), the Co-LTL and Mn-LTL gave a 40\%-48\% KA oil (cyclohexanone and cyclohexanol) yield as well as nearly 100\% TBHP conversion under mild reaction conditions. The reactions were confirmed to be heterogeneous and to have proceeded catalytically. No loss of catalytic activity or leaching of metal active sites ions were observed during 4 reuses.",

keywords = "Co-LTL, KA oil, Mn-LTL, cyclohexane oxidation, metallosilicate, triethanolamine",

author = "Kai Xue and Boting Yang and Peng Wu",

note = "Publisher Copyright: {\textcopyright} 2014 Science China Press and Springer-Verlag Berlin Heidelberg.",

year = "2015",

month = jan,

doi = "10.1007/s11426-014-5248-y",

language = "英语",

volume = "58",

pages = "139--147",

journal = "Science China Chemistry",

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TY - JOUR

T1 - Preparation of Co- or Mn-substituted LTL zeolites and their catalytic properties in cyclohexane oxidation

AU - Xue, Kai

AU - Yang, Boting

AU - Wu, Peng

PY - 2015/1

Y1 - 2015/1

N2 - Co- or Mn-substituted LTL zeolites were hydrothermally synthesized by a novel organic-ligand-assisted method. XRD, UV-Vis DRS, XPS, and EPR techniques verified that the Co and Mn ions were incorporated into the zeolite framework. No organic species were retained in as-synthesized Co or Mn-LTL zeolites, which resulted in porous materials without calcination. In the oxidation of cyclohexane with tert-butyl hydroperoxide (TBHP), the Co-LTL and Mn-LTL gave a 40%-48% KA oil (cyclohexanone and cyclohexanol) yield as well as nearly 100% TBHP conversion under mild reaction conditions. The reactions were confirmed to be heterogeneous and to have proceeded catalytically. No loss of catalytic activity or leaching of metal active sites ions were observed during 4 reuses.

AB - Co- or Mn-substituted LTL zeolites were hydrothermally synthesized by a novel organic-ligand-assisted method. XRD, UV-Vis DRS, XPS, and EPR techniques verified that the Co and Mn ions were incorporated into the zeolite framework. No organic species were retained in as-synthesized Co or Mn-LTL zeolites, which resulted in porous materials without calcination. In the oxidation of cyclohexane with tert-butyl hydroperoxide (TBHP), the Co-LTL and Mn-LTL gave a 40%-48% KA oil (cyclohexanone and cyclohexanol) yield as well as nearly 100% TBHP conversion under mild reaction conditions. The reactions were confirmed to be heterogeneous and to have proceeded catalytically. No loss of catalytic activity or leaching of metal active sites ions were observed during 4 reuses.

KW - Co-LTL

KW - KA oil

KW - Mn-LTL

KW - cyclohexane oxidation

KW - metallosilicate

KW - triethanolamine

UR - https://www.scopus.com/pages/publications/84925543508

U2 - 10.1007/s11426-014-5248-y

DO - 10.1007/s11426-014-5248-y

M3 - 文章

AN - SCOPUS:84925543508

SN - 1674-7291

VL - 58

SP - 139

EP - 147

JO - Science China Chemistry

JF - Science China Chemistry

IS - 1

ER -

Preparation of Co- or Mn-substituted LTL zeolites and their catalytic properties in cyclohexane oxidation

Abstract

Keywords

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