Mechanistic interpretations and insights for the oxidative dehydrogenation of ethane with CO2 over alkali metal modified Zn/SSZ-13 catalyst - Details

author：

Indexed by：

Scopus

Abstract：

Alkali　metal　promoted　Zn/SSZ-13　catalysts　were　investigated　for　ethane　dehydrogenation　(EDH)　and　CO2-assisted　oxidative　ethane　dehydrogenation　(CO2-EDH).　The　Zn/Na/K/SSZ-13　demonstrated　enhanced　ethane　dehydrogenation　performance,　achieving　0.381　mol　C2H4　gZn-1　h-1　with　a　low　deactivation　rate　constant　of　(kd)　of　0.04　h-1　in　the　CO2-EDH　process　after　440　min　time　on　stream,　compared　to　the　unmodified　Zn/SSZ-13　catalyst.　Comprehensive　characterizations　revealed　that　the　isolated　Zn2+　species　serve　as　the　active　sites　for　dehydrogenation,　while　the　addition　of　alkali　metals　compensate　the　acid　sites　of　SSZ-13,　effectively　suppressing　the　side　reactions　such　as　cracking.　Moreover,　the　introduction　of　CO2　mitigates　Zn　loss　and　enhances　catalyst　activity　and　stability　by　coupling　with　the　reverse　water　gas　shift　reaction　(RWGS),　which　also　suppress　the　coke　deposition.　Investigation　of　vary　CO2　content　indicated　that　higher　CO2　concentrations　significantly　suppress　Zn　loss　and　increase　the　proportion　of　the　RWGS　reaction,　thereby　improving　CO2-EDH　catalytic　performance.　This　work　elucidates　the　active　phase　of　ethane　dehydrogenation　and　highlights　the　role　of　alkali　metals　and　CO2　in　the　CO2-EDH　process　over　Zn/Na/K/SSZ-13,　providing　valuable　insights　for　designing　high-performance　CO2-EDH　catalysts.　©　2025　Elsevier　B.V.

Keyword：

Alkaline metal Carbon dioxide Ethane Ethylene Oxidative dehydrogenation Reverse water-gas shift Zeolite Zinc

Community：

[ 1 ] [Wu L.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 2 ] [Zheng W.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 3 ] [Wang X.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 4 ] [He J.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 5 ] [Zou C.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 6 ] [Zhu M.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 7 ] [Liu B.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 8 ] [Tan L.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 9 ] [Tang Y.]Institute of Molecular Catalysis and In-situ/operando Studies, Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China

Reprint 's Address：

Email：

Show more details

Related Keywords：

Mechanistic interpretations and insights for the oxidative dehydrogenation of ethane with CO2 over alkali metal modified Zn/SSZ-13 catalyst
2025，MOLECULAR CATALYSIS
Finned Zn-MFI zeolite encapsulated noble metal nanoparticle catalysts for the oxidative dehydrogenation of propane with carbon dioxide
2023，JOURNAL OF ENERGY CHEMISTRY
Defect-Rich TiO2 In Situ Evolved from MXene for the Enhanced Oxidative Dehydrogenation of Ethane to Ethylene
2021，ACS CATALYSIS
Enhanced Catalytic Performance of Fe-containing HZSM-5 for Ethane Non-Oxidative Dehydrogenation via Hydrothermal Post-Treatment
2021，CHEMCATCHEM
Electrochemical dehydrogenation of ethane to ethylene in solid oxide electrolyzer
2023，INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Source ：

Molecular Catalysis

ISSN： 2468-8231

Year： 2025

Volume： 579

3 . 9 0 0

JCR@2023

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 2

Affiliated Colleges：

Get Fulltext

DOI Library Discovery Baidu Scholar Search SCOPUS

Type
Departments

All Years Choose Year From to