Recent progress in the development of catalysts for propane dehydrogenation in the presence of CO₂

Reaction Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 9(6), P. 1292 - 1312

Published: Jan. 1, 2024

Propane dehydrogenation (PDH) has become an important strategy to address the ever-increasing global demand for propene.

Language: Английский

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Progress through Temporal Analysis of Products and Steady‐state Isotopic Transient Kinetic Analysis to Elucidate Oxidation, CO₂ Hydrogenation and Lower Olefins Production Reactions

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(16)

Published: March 25, 2024

Abstract A prerequisite for the development or optimization of heterogeneous catalysts is a comprehensive understanding reaction mechanism and kinetics at level as elementary possible. In comparison with steady‐state catalytic tests typically used this purpose, non‐steady‐state (transient) studies provide deeper insights due to higher time resolution. For several decades, temporal analysis products (TAP) isotopic transient kinetic (SSITKA) have been successfully applied various reactions. review, we highlight contributions made by TAP SSITKA between 2017 2023 mechanisms derivation microkinetics. The versatility these methods illustrated examples oxidative coupling methane, CO/CO 2 hydrogenation hydrocarbons methanol, metathesis ethylene 2‐butenes propene, acrolein oxidation acrylic acid, methanol conversion olefins non‐oxidative propane dehydrogenation propene. We also our personal views on possible developments in area.

Language: Английский

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Microwave catalytic oxidative dehydrogenation of propane by CO2 over ZnK/Silicalite-1 catalysts by acid treatment

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 357, P. 124332 - 124332

Published: June 25, 2024

Language: Английский

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Boosting Electrochemical Nitrogen Fixation via Regulating Surface Electronic Structure by CeO₂ Hybridization

Small, Journal Year: 2024, Volume and Issue: 20(25)

Published: Jan. 9, 2024

Abstract Electrocatalytic nitrogen reduction reaction (NRR) paves a sustainable way to produce NH 3 but suffering from the relatively low yield and poor selectivity. High‐performance NRR catalysts deep insight into structure‐performance relationship are higher desired. Herein, molten‐salt approach is developed synthesize tiny CeO 2 nanoparticles anchored by ultra‐thin MoN nanosheets as advanced for NRR. Specifically, considerably high rate of 27.5 µg h −1 mg with 17.2% Faradaic efficiency (FE) can be achieved at ‐0.3 V vs (RHE) under ambient conditions. Experimental density functional theory (DFT) calculations further point out that incorporation promotes enlargement electron deficient area vacancy site. The enlarged contributes accommodation lone pair electrons N , which dramatically improves adsorption/activation key intermediates (*NNH *NH ) generation, thus boosting performance.

Language: Английский

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Unraveling the influence of CO2 and Ce loading over ZSM-5 for oxidative dehydrogenation of propane

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 150009 - 150009

Published: Feb. 26, 2024

Language: Английский

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CO₂-Assisted Dehydrogenation of Propane by Atomically Dispersed Pt on MXenes

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(13), P. 9662 - 9677

Published: June 12, 2024

The catalytic mechanism and performance of MXene-supported atomically dispersed Pt (Pt1@MXene) in CO2-assisted propane oxidative dehydrogenation (CO2-ODHP) was evaluated by density functional theory (DFT) calculations microkinetic simulations. single atom (Pt SA) site can promote the cleavage two C–H bonds to yield propylene via direct (DDHP), whereas Pt–MXene interface facilitates C–O bond CO2 hydrogenation O* H2O reverse water gas shift (RWGS). Degree rate control Brönsted–Evans–Polanyi (BEP) correlation analyses revealed that binding strength toward C3H7* MXene determined DDHP RWGS activities, respectively. activity is also highly correlated with d-band center SA work function Pt1@MXene surface. Microkinetic simulations showed anchored on Mo2CO2 W2CO2 possessed superior than Pt(111) surface, although only Pt1@Mo2CO2 presented high activities both RWGS. Furthermore, energy barriers deep dehydrogenations C–C cracking C3 derivatives over evidenced its anticoking ability. These predictions suggest as a promising CO2-ODHP catalyst.

Language: Английский

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Origin of Carbon Monoxide Formation in the Oxidative Dehydrogenation of Propane Using Carbon Dioxide

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(15), P. 11881 - 11892

Published: July 25, 2024

The oxidative dehydrogenation of C3H8 to C3H6 using CO2 is an attractive alternative nonoxidative propane and facilitates the utilization CO2. activity supported nanoparticles for this reaction has been extensively investigated, but often-overlooked deleterious formation CO via reforming reactions remains a challenge with these catalysts. In paper, we investigate origin over nanoparticle catalysts find that support metal both play role in favoring either or C3H6. Reducible supports are associated higher increased formation, nonreducible also facilitate formation. Supported Pt were more selective toward than Pd analogues, favored coke These findings highlight need careful catalyst design carbon dioxide, particularly respect tuning selectivity.

Language: Английский

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Detailing the activity and deactivation of supported Pt-Sn and Pt-In catalysts for CO2-assisted PDH

Journal of Catalysis, Journal Year: 2025, Volume and Issue: 443, P. 115943 - 115943

Published: Jan. 6, 2025

Language: Английский

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Active and Stable Platinum-Indium Single Atom Alloy Catalysts for Propane Dehydrogenation

Published: Jan. 1, 2025

Propane dehydrogenation (PDH) on Pt-based catalysts is a promising technology to satisfy the increasing demand for propylene, but suffer from Pt sintering and coke formation. Developing stable efficient PDH thus crucial industrial applications. Herein, we report highly active Pt-In/Al₂O₃ catalyst with loading of 0.1 wt.%, achieving atomic-level dispersion through formation single-atom alloys (SAAs). The single platinum atoms dispersed indium nanoparticles demonstrates exceptional stability 120 hours in continuous propane under industrially relevant conditions, propylene rate up 23.2 mol g-1 h-1 at 550 °C (kd 0.002 h-1). improved catalytic activity anti-coking ability Pt-In SAA can be attributed intimate interaction between In, as evidenced by changes particle morphology atomic electronic environment. introduction In disrupts Pt-Pt bonds, facilitating isolated sites that increase number sites. Additionally, Experimental DFT calculation results indicate significantly enhance desorption surface-bounded prevent its further dehydrogenation, leading higher selectivities. This work provides insights design development supported alloy excellent thermal PDH.

Language: Английский

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Role and Regulation of Surface Oxygen Vacancy in Vanadium-Based Oxides for Chemical Looping Oxidative Dehydrogenation of Propane

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Redox catalysts play a critical role in chemical looping oxidative dehydrogenation of propane (CL-ODH).

Language: Английский

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