Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Steam-Induced Coarsening of Single-Unit-Cell MFI Zeolite Nanosheets and Its Effect on External Surface Brønsted Acid Catalysis

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [2];  [3];  [3];  [3];  [3];  [3];  [4];  [3];  [2];  [3];  [5]
  1. Univ. of Minnesota, Minneapolis, MN (United States); OSTI
  2. Univ. of California, Davis CA (United States)
  3. Univ. of Minnesota, Minneapolis, MN (United States)
  4. Khalifa Univ. of Science and Technology, Abu Dhabi (United Arab Emirates)
  5. Univ. of Minnesota, Minneapolis, MN (United States); Johns Hopkins Univ., Baltimore, MD (United States)
Commonly used methods to assess crystallinity, micro-/mesoporosity, Brønsted acid site density and distribution (in micro- vs. mesopores), and catalytic activity suggest nearly invariant structure and function for aluminosilicate zeolite MFI two-dimensional nanosheets before and after superheated steam treatment. Yet, pronounced reaction rate decrease for benzyl alcohol alkylation with mesitylene, a reaction that cannot take place in the zeolite micropores, is observed. Transmission electron microscopy images reveal pronounced changes in nanosheet thickness, aspect ratio and roughness indicating that nanosheet coarsening and the associated changes in the external (mesoporous) surface structure are responsible for the changes in the external surface catalytic activity. Finally, superheated steam treatment of hierarchical zeolites can be used to alter nanosheet morphology and regulate external surface catalytic activity while preserving micro- and mesoporosity, and micropore reaction rates.
Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Catalysis Center for Energy Innovation (CCEI); Univ. of Delaware, Newark, DE (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001004
OSTI ID:
1767524
Alternate ID(s):
OSTI ID: 1631759
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 24 Vol. 59; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (57)

On the Synthesis and Adsorption Properties of Single-Unit-Cell Hierarchical Zeolites Made by Rotational Intergrowths journal September 2013
A quantitative study of the structure–activity relationship in hierarchical zeolites using liquid‐phase reactions journal January 2019
Hierarchische Nanofertigung: von geformten Zeolithnanopartikeln zu hochleistungsfähigen Trennmembranen journal October 2007
Architecture-Dependent Distribution of Mesopores in Steamed Zeolite Crystals as Visualized by FIB-SEM Tomography journal January 2011
Detailed Reaction Paths for Zeolite Dealumination and Desilication From Density Functional Calculations journal December 2011
X-ray Imaging of Zeolite Particles at the Nanoscale: Influence of Steaming on the State of Aluminum and the Methanol-To-Olefin Reaction journal March 2012
Self-Pillared, Single-Unit-Cell Sn-MFI Zeolite Nanosheets and Their Use for Glucose and Lactose Isomerization journal July 2015
Hierarchical Nanomanufacturing: From Shaped Zeolite Nanoparticles to High-Performance Separation Membranes journal October 2007
Architecture-Dependent Distribution of Mesopores in Steamed Zeolite Crystals as Visualized by FIB-SEM Tomography journal January 2011
Detailed Reaction Paths for Zeolite Dealumination and Desilication From Density Functional Calculations journal December 2011
X-ray Imaging of Zeolite Particles at the Nanoscale: Influence of Steaming on the State of Aluminum and the Methanol-To-Olefin Reaction journal March 2012
Self-Pillared, Single-Unit-Cell Sn-MFI Zeolite Nanosheets and Their Use for Glucose and Lactose Isomerization journal July 2015
Effect of Si/Al Ratio on the Catalytic Activity of Two‐Dimensional MFI Nanosheets in Aromatic Alkylation and Alcohol Etherification journal August 2019
The Porosity, Acidity, and Reactivity of Dealuminated Zeolite ZSM-5 at the Single Particle Level: The Influence of the Zeolite Architecture journal November 2011
3D Nanoscale Chemical Imaging of the Distribution of Aluminum Coordination Environments in Zeolites with Soft X-Ray Microscopy journal January 2013
2,6-Di-Tert-Butyl-Pyridine as a Probe Molecule to Measure External Acidity of Zeolites journal October 1998
Computer Visualization of Three-Dimensional Image Data Using IMOD journal January 1996
Catalysis with hierarchical zeolites journal June 2011
Solvation and acid strength effects on catalysis by faujasite zeolites journal February 2012
Spatial distribution, strength, and dealumination behavior of acid sites in nanocrystalline MFI zeolites and their catalytic consequences journal April 2012
Influence of steaming on the acidity and the methanol conversion reaction of HZSM-5 zeolite journal November 2013
Interdependence between porosity, acidity, and catalytic performance in hierarchical ZSM-5 zeolites prepared by post-synthetic modification journal December 2013
Exploring the hierarchy of transport phenomena in hierarchical pore systems by NMR diffusion measurement journal December 2012
Challenges on molecular aspects of dealumination and desilication of zeolites journal June 2014
Long-term steam stability of MWW structure zeolites (MCM-22 and ITQ-1) journal July 2014
Activity and selectivity differences of external Brønsted acid sites of single-unit-cell thick and conventional MFI and MWW zeolites journal December 2014
Impact of Aqueous Medium on Zeolite Framework Integrity journal April 2015
Water Interactions in Zeolite Catalysts and Their Hydrophobically Modified Analogues journal November 2015
Zeolite Thin Films: From Computer Chips to Space Stations journal February 2010
Kinetic and Thermodynamic Studies of Silica Nanoparticle Dissolution journal August 2007
Two-Dimensional Zeolites: Current Status and Perspectives journal February 2014
Electron Tomography for Heterogeneous Catalysts and Related Nanostructured Materials journal May 2009
Catalytic Behavior of Brønsted Acid Sites in MWW and MFI Zeolites with Dual Meso- and Microporosity journal December 2010
Regioselectivity of Al–O Bond Hydrolysis during Zeolites Dealumination Unified by Brønsted–Evans–Polanyi Relationship journal November 2014
Conceptual Frame Rationalizing the Self-Stabilization of H-USY Zeolites in Hot Liquid Water journal December 2014
Silicalite characterization. 2. IR spectroscopy of the interaction of carbon monoxide with internal and external hydroxyl groups journal June 1992
Intracrystalline rearrangement of constitutive water in hydrogen zeolite Y journal November 1967
Solid-State NMR Detection, Characterization, and Quantification of the Multiple Aluminum Environments in US-Y Catalysts by 27 Al MAS and MQMAS Experiments at Very High Field journal June 2001
Factors that Determine Zeolite Stability in Hot Liquid Water journal September 2015
Thermochemistry of Pure-Silica Zeolites journal November 2000
Stability of Zeolites in Hot Liquid Water journal November 2010
2,6-Di- tert- butylpyridine Sorption Approach to Quantify the External Acidity in Hierarchical Zeolites journal May 2014
Physicochemical Characterization of Silicalite-1 Surface and Its Implications on Crystal Growth journal May 2003
Ordered porous materials for emerging applications journal June 2002
Stable single-unit-cell nanosheets of zeolite MFI as active and long-lived catalysts journal September 2009
Determining the location and nearest neighbours of aluminium in zeolites with atom probe tomography journal July 2015
Electron tomography and holography in materials science journal April 2009
Fast room temperature lability of aluminosilicate zeolites journal October 2019
Imaging the effect of a hydrothermal treatment on the pore accessibility and acidity of large ZSM-5 zeolite crystals by selective staining journal January 2013
Tailoring and visualizing the pore architecture of hierarchical zeolites journal January 2015
Catalytic test reactions for the evaluation of hierarchical zeolites journal January 2016
Two-dimensional zeolites in catalysis: current status and perspectives journal January 2016
Simple quantification of zeolite acid site density by reactive gas chromatography journal January 2017
Hierarchical zeolites: enhanced utilisation of microporous crystals in catalysis by advances in materials design journal January 2008
Hierarchically structured zeolites: synthesis, mass transport properties and applications journal January 2012
Generation, Characterization, and Impact of Mesopores in Zeolite Catalysts journal January 2003
Synthesis of Self-Pillared Zeolite Nanosheets by Repetitive Branching journal June 2012