Zeolite Catalysts for Energy and Environment

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Environmental Catalysis".

Deadline for manuscript submissions: closed (30 December 2021) | Viewed by 2048

Special Issue Editors


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Guest Editor
European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
Interests: automotive and sustainable transport; heterogenous catalysis for energy and the environment; sustainability; policy making; air quality protection and pollution mitigation

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Guest Editor
Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, 20156 Milano, Italy
Interests: operando spectroscopy; surface science; heterogeneous catalysts; NOx abatement; CO2 conversion
State Key Laboratory of Clean Energy Utilization, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
Interests: heterogeneous catalysis; reaction mechanism; kinetics; computational chemistry; environmental catalysis; energy conversion

Special Issue Information

Dear Colleagues,

Zeolite-based catalysts are at the core of a multitude of industrial processes in the fields of energy and the environment, constituting a key element in the transition toward a more sustainable and greener economy. Zeolites owe their success to their unique molecular structures, shape selectivity, confinement effects, acidity, and physical properties, which provide unparalleled performances in many catalytic applications. For example, in the environmental sector, copper-exchanged zeolites have become the state-of-the-art catalysts used in selective catalytic reduction of nitrogen oxides present in the exhausts of lean-burn engines used in the automotive sector. More recently, the direct low-temperature conversion of methane to methanol has been investigated progressively more due to its enormous potential uses in the energy and chemical sectors. These are only some examples of the possibilities offered by these materials and for which, despite the impressive efforts made in the specialized literature, many challenges remain unsolved. Innovative experimental techniques and theoretical approaches are becoming progressively available and provide new tools to probe these catalysts and to ultimately solve the demanding challenges posed by clean energy production and the environmental safeguarding that awaits. 

This Special Issue aims to cover the novel, exciting advancements made in zeolite-based catalysts used in energy and environment-related applications. Topics of interest might include (but are not restricted to) the following: innovative characterization and synthesis techniques, advancements in the understanding of reaction chemistries based on zeolitic catalysts, emerging applications in the field of energy and environment, examples of successful industrial applications, role of zeolite-based catalysts in the developing environmental and energy policies, and perspectives on future applications. 

Dr. Tommaso Selleri
Dr. Chiara Negri
Dr. Wenshuo Hu
Guest Editors

Manuscript Submission Information

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Keywords

  • environmental applications (e.g., selective catalytic reduction, passive NOx adsorption)
  • energy applications (e.g., methane to methanol)
  • innovative experimental approaches (e.g., operando and in situ spectroscopies, transient kinetics analysis)
  • state-of-the-art theoretical approaches (e.g., density functional theory, molecular dynamics)
  • examples of industrial applications (e.g., new concepts in after-treatment systems in the mobile sector)
  • relevance of zeolite-based catalysts in policy enforcement and policy development

Published Papers (1 paper)

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Research

14 pages, 22804 KiB  
Article
Emissions Merit Function for Evaluating Multifunctional Catalyst Beds
by Todd J. Toops and Pranaw Kunal
Catalysts 2022, 12(4), 419; https://doi.org/10.3390/catal12040419 - 8 Apr 2022
Viewed by 1449
Abstract
With emission control regulations getting stricter, multi-functional catalyst systems are increasingly important for low-temperature operation. We investigate a wide range of multi-component catalyst systems, as physical mixtures and in multi-bed configurations, while varying the ratios of hydrocarbon traps (HCT), passive NOx adsorbers (PNAs), [...] Read more.
With emission control regulations getting stricter, multi-functional catalyst systems are increasingly important for low-temperature operation. We investigate a wide range of multi-component catalyst systems, as physical mixtures and in multi-bed configurations, while varying the ratios of hydrocarbon traps (HCT), passive NOx adsorbers (PNAs), and diesel oxidation catalysts (DOC). Using industrially guided protocols, we measured the ability of these complex catalyst systems to reduce emissions during a 40 °C/min temperature ramp to simulate cold-start conditions. Using a temperature boundary condition of 250 °C, the average conversion was calculated for each regulated pollutant: CO, NOx, and total hydrocarbons (THC). An emissions merit function was developed to evaluate the effectiveness of each system relative to the relevant emission standards and expected engine exhaust concentrations. This merit function identified that a 1:1:4 ratio of PNA:HCT:DOC was the most effective emissions reduction configuration and had similar reactivity as a physical mixture or as a PNA→HCT→DOC multi-bed reactor. Full article
(This article belongs to the Special Issue Zeolite Catalysts for Energy and Environment)
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