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author：

Gan, Y. (Gan, Y..) [1] | Xu, Y. (Xu, Y..) [2] | Zhang, P. (Zhang, P..) [3] | Wang, W. (Wang, W..) [4] | Liu, W. (Liu, W..) [5] | Li, R. (Li, R..) [6] | Xu, X. (Xu, X..) [7] | Wu, L. (Wu, L..) [8] | Tang, Y. (Tang, Y..) [9] | Tan, L. (Tan, L..) [10]

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Scopus

Abstract：

Mo/HMCM-22　is　one　of　the　candidate　catalysts　for　methane　dehydroaromatization　(MDA)　reaction.　However,　serious　coke　deposition　would　deactivate　the　catalyst,　resulting　in　a　rapid　decrease　of　aromatics　yield.　Here,　we　adjusted　the　acidity　of　MCM-22　zeolite　by　doping　boron　into　the　framework.　Boron　species　replace　some　of　framework　aluminum　and　prompt　aluminum　to　locate　in　sinusoidal　channel.　It　optimizes　the　ratio　of　strong/weak　Brønsted　acid,　as　well　as　enhances　the　interaction　between　molybdenum　and　HMCM-22　to　facilitate　the　dispersion　of　molybdenum　species.　After　10　h　of　MDA　reaction,　the　yield　of　aromatics　over　Mo/H[B]MCM-22　(SBR　30)　is　3.5　times　higher　than　that　of　Mo/H[B]MCM-22　(SBR　5).　It　decreases　by　only　4.8　%　in　comparison　to　the　initial　yield.　Meanwhile,　Mo/H[B]MCM-22　(SBR　30)　shows　significantly　better　resistance　to　coke　deposition.　Therefore,　the　established　structure–activity　relationships　provide　valuable　insights　for　future　research　on　the　modification　of　zeolite　acidity　in　methane　dehydroaromatization　reaction.　©　2024　Elsevier　Ltd

Keyword：

Boron doping Brønsted acid MCM-22 zeolite Methane dehydroaromatization Mo-based catalyst

Community：

  • [ 1 ] [Gan Y.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [Xu Y.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 3 ] [Zhang P.]CNOOC Institute of Chemicals & Advanced Materials, Beijing, 102209, China
  • [ 4 ] [Wang W.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 5 ] [Liu W.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 6 ] [Li R.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 7 ] [Xu X.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 8 ] [Wu L.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 9 ] [Tang Y.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 10 ] [Tan L.]Institute of Molecule Catalysis and In-Situ/Operando Studies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China

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Source ：

Chemical Engineering Science

ISSN： 0009-2509

Year： 2024

Volume： 299

4 . 1 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 1

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