skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Discerning the Location and Nature of Coke Deposition from Surface to Bulk of Spent Zeolite Catalysts

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep37586· OSTI ID:1334859

The nanoscale compositional mapping of fresh HZSM-5 catalyst synthesized using hydrothermal process as well as after just steaming and after ethanol conversion reaction for 72 hours at realistic catalytic conditions was investigated using atom probe tomography. Atom probe tomography permitted direct atomic scale imaging of non-uniform distribution of Al within the HZSM-5 as well as for the first time image the hydrocarbon coking after ethanol reaction. Clear evidences for existence of multiple C-H molecular species which appear to aggregate as clusters within the pores of spent HZSM-5 catalyst materials is provided. Furthermore, these results provide evidence for the ability of atom probe tomography, a powerful 3D characterization tool in interrogating the atomic scale chemistry of zeolite catalyst materials at industrially relevant catalytic conditions.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1334859
Report Number(s):
PNNL-SA-113562; BM0102060
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

References (48)

Impact of Zeolites on the Petroleum and Petrochemical Industry journal May 2009
Revealing the Distribution of the Atoms within Individual Bimetallic Catalyst Nanoparticles journal August 2014
Oxidation and Surface Segregation Behavior of a Pt–Pd–Rh Alloy Catalyst journal October 2014
Coke Formation during the Methanol-to-Olefin Conversion: In Situ Microspectroscopy on Individual H-ZSM-5 Crystals with Different Brønsted Acidity journal February 2011
27Al and 29Si n.m.r. studies of HZSM-5: Part 1. The effect of sorbed molecules journal February 1990
The development of strong acidity in hexafluorosilicate-modified Y-type zeolites journal August 1992
Characterization of Oxidation and Reduction of Pt–Ru and Pt–Rh–Ru Alloys by Atom Probe Tomography and Comparison with Pt–Rh journal August 2012
Encapsulation method for atom probe tomography analysis of nanoparticles journal December 2015
A general protocol for the reconstruction of 3D atom probe data journal March 1995
Organic Materials and Organic/Inorganic Heterostructures in Atom Probe Tomography journal May 2012
Catalytic Test Reactions for Probing the Acidity and Basicity of Zeolites book January 2008
Conversion of Methanol to Hydrocarbons: How Zeolite Cavity and Pore Size Controls Product Selectivity journal April 2012
Organic chemistry of coke formation journal April 2001
Catalyst deactivation by coke formation in microporous and desilicated zeolite H-ZSM-5 during the conversion of methanol to hydrocarbons journal November 2013
Understanding Atom Probe Tomography of Oxide-Supported Metal Nanoparticles by Correlation with Atomic-Resolution Electron Microscopy and Field Evaporation Simulation journal March 2014
Stable single-unit-cell nanosheets of zeolite MFI as active and long-lived catalysts journal September 2009
Helium entrapment in a nanostructured ferritic alloy journal October 2011
Coke location in microporous and hierarchical ZSM-5 and the impact on the MTH reaction journal November 2013
Dealumination of HZSM-5 via steam-treatment journal December 2012
Impact of dynamic specimen shape evolution on the atom probe tomography results of doped epitaxial oxide multilayers: Comparison of experiment and simulation journal August 2015
Zeolites as catalysts in oil refining journal January 2014
Role of Photoexcitation and Field Ionization in the Measurement of Accurate Oxide Stoichiometry by Laser-Assisted Atom Probe Tomography journal March 2013
Analogue investigations of electric field distribution and ion trajectories in the field ion microscope journal August 1974
Free radicals formed in the adsorption of saturated hydrocarbons on H-mordenite journal June 1993
Determining the location and nearest neighbours of aluminium in zeolites with atom probe tomography journal July 2015
Formation of a frozen-like adsorbed layer of ethyltoluenes in ZSM-5 crystals and their release upon heating journal April 2000
Ethanol conversion to hydrocarbons on HZSM-5: Effect of reaction conditions and Si/Al ratio on the product distributions journal November 2014
Coke Formation in a Zeolite Crystal During the Methanol-to-Hydrocarbons Reaction as Studied with Atom Probe Tomography journal August 2016
Solvent Evaporation Assisted Preparation of Oriented Nanocrystalline Mesoporous MFI Zeolites journal May 2011
Catalytic fast pyrolysis of lignocellulosic biomass journal January 2014
Atomic Imaging of Carbon-Supported Pt, Pt/Co, and Ir@Pt Nanocatalysts by Atom-Probe Tomography journal December 2013
Helium bubble distributions in a nanostructured ferritic alloy journal March 2013
Hydrogen production from formic acid decomposition at room temperature using a Ag–Pd core–shell nanocatalyst journal April 2011
Subsurface synthesis and characterization of Ag nanoparticles embedded in MgO journal February 2013
Detecting density variations and nanovoids journal May 2011
Conversion of ethanol to hydrocarbons on hierarchical HZSM-5 zeolites journal December 2014
Utilization of biomass: Conversion of model compounds to hydrocarbons over zeolite H-ZSM-5 journal April 2011
The Porosity, Acidity, and Reactivity of Dealuminated Zeolite ZSM-5 at the Single Particle Level: The Influence of the Zeolite Architecture journal November 2011
Simulation of heterogeneous atom probe tip shapes evolution during field evaporation using a level set method and different evaporation models journal April 2015
Experimental and Computational Investigations of the Deactivation of H-ZSM-5 Zeolite by Coking in the Conversion of Ethanol into Hydrocarbons journal April 2012
ChemInform Abstract: Zeolites as Catalysts in Oil Refining journal December 2014
Conversion of biomass-derived small oxygenates over HZSM-5 and its deactivation mechanism journal January 2014
Coking, aging, and regeneration of zeolites journal November 1988
Coke Formation in a Zeolite Crystal During the Methanol-to-Hydrocarbons Reaction as Studied with Atom Probe Tomography journal August 2016
Coking, aging and regeneration of zeolites journal August 1993
Revealing the Distribution of the Atoms within Individual Bimetallic Catalyst Nanoparticles journal August 2014
27Al and 29Si n.m.r. studies of HZSM-5: Part 2. The effect of coke formation journal March 1990
Simultaneous coking and dealumination of zeolite H-ZSM-5 during the transformation of chloromethane into olefins journal January 2016

Cited By (11)

Nanoskalige chemische Bildgebung von Zeolithen durch Atomsondentomographie journal June 2018
Nanoscale Chemical Imaging of Zeolites Using Atom Probe Tomography journal July 2018
Cascade Reactions in Tunable Lamellar Micro- and Mesopores for C=C Bond Coupling and Hydrocarbon Synthesis journal August 2018
Probing the Location and Speciation of Elements in Zeolites with Correlated Atom Probe Tomography and Scanning Transmission X‐Ray Microscopy journal October 2018
Accurate 3D Characterization of Catalytic Bodies Surface by Scanning Electron Microscopy journal June 2019
The role of metal vacancies during high-temperature oxidation of alloys journal September 2018
Three-dimensional nanoscale characterisation of materials by atom probe tomography journal November 2016
Atom Probe Tomography for Catalysis Applications: A Review journal July 2019
Cascade Reactions in Tunable Lamellar Micro- and Mesopores for C=C Bond Coupling and Hydrocarbon Synthesis journal August 2018
Isolating Clusters of Light Elements in Molecular Sieves with Atom Probe Tomography journal June 2018
Molecular elucidating of an unusual growth mechanism for polycyclic aromatic hydrocarbons in confined space journal February 2020