Combustion Characteristics and Emission Control of Blended Fuels

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: 30 December 2025 | Viewed by 480

Special Issue Editor


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Guest Editor
Institute of Physical Chemistry, Romanian Academy, 060021 Bucharest, Romania
Interests: chemical kinetics; combustion; additives; explosion; closed vessel
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Special Issue Information

Dear Colleagues,

Fuel blending, the process of combining different fuels, impacts engine performance, environmental footprint, and cost efficiency. From conventional fossil fuels to emerging renewable alternatives, the landscape of fuel options continues to evolve, propelled by technological advancements, regulatory frameworks, and shifting consumer preferences. 

Blended fuels, like ethanol–gasoline mixes, offer improved combustion, enhanced engine efficiency, and reduced emissions compared to their unblended counterparts. Fuel composition plays a critical role in determining performance and the overall operational costs.

By grasping the nuances of blended vs. unblended fuels, stakeholders can make informed decisions, ensuring a balance between performance and affordability in the fuel industry. Amidst the ongoing quest for cleaner, more efficient energy solutions, the debate between blended and unblended fuels is receiving increasing attention.

This Special Issue on “Combustion Characteristics and Emission Control of Blended Fuels” seeks high-quality works focusing on the latest advances in blended fuels studies. Topics include, but are not limited to, the following:

  • Improving fuel properties by blending;
  • Environmental concerns and promoting sustainability;
  • Emission control by blending fuels;
  • Combustion properties of blended fuels.

Dr. Codina Movileanu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • blending
  • combustion
  • emission control
  • combustion properties
  • combustion performance

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Published Papers (1 paper)

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Research

13 pages, 1716 KiB  
Article
Suppressing Calcium Deactivation in Selective Catalytic Reduction of NOx from Diesel Engines Using Antimony
by Ibrahim Aslan Resitoglu, Ali Keskin, Bugra Karaman and Himmet Ozarslan
Processes 2025, 13(6), 1914; https://doi.org/10.3390/pr13061914 - 17 Jun 2025
Viewed by 264
Abstract
The selective catalytic reduction (SCR) of NOx emissions by hydrocarbons (HCs) using a silver (Ag)-based catalyst offers significant advantages over conventional SCR systems that rely on ammonia reductants and vanadium-based catalysts. However, the conversion rate of SCR is influenced by several factors, [...] Read more.
The selective catalytic reduction (SCR) of NOx emissions by hydrocarbons (HCs) using a silver (Ag)-based catalyst offers significant advantages over conventional SCR systems that rely on ammonia reductants and vanadium-based catalysts. However, the conversion rate of SCR is influenced by several factors, among which catalyst poisoning is a major concern. Toxic metals such as sodium (Na), potassium (K), magnesium (Mg), and calcium (Ca) can degrade catalyst activity and lead to deactivation. Poisoned catalysts suffer from reduced conversion rates and premature deactivation before reaching their intended operational lifespan. In particular, calcium poisoning results in the formation of CaO (calcium oxide), which reacts to produce a CaWO4 compound that severely impairs SCR performance. This study investigates the role of antimony (Sb) in mitigating Ca-induced deactivation in HC-SCR of NOx. Five catalysts with varying Sb loadings were prepared and tested to evaluate Sb’s effect on NOx conversion rate at a space velocity of 30,000 h−1. The results demonstrate that Sb effectively suppresses Ca deactivation, enhancing the conversion rate across all engine test conditions. The highest NOx conversion rate (95.88%) was achieved using a catalyst with 3% Sb. Full article
(This article belongs to the Special Issue Combustion Characteristics and Emission Control of Blended Fuels)
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