The noncatalytic oxidative desulfurization process of straight-run kerosene and diesel fractions with high sulfur contents due to their treatment with air without using expensive catalysts and strong oxidants is considered. The research was carried out in a periodic mode in a bubble-type reactor with a volume of 1 × 10 m under the following conditions: 180-200 °C; 2.5-3.0 MPa; the process lasted for 20-30 min; the air/raw material ratio was 1.6-2.2 m/min per 1 m of raw material. The process can be used to obtain industrial jet fuels and diesel fuel components with good lubricating properties. The possibility and expediency of carrying out the process in the presence of water have been studied. The ratio of water/raw materials (vol.) varied from 0:1 to 2:1. It was proven that the water presence in the reaction medium has a positive effect on the studied process and decreases the oxidation intensity of hydrocarbon medium by 2-4 times. This is due to both the slowing of oxidation reactions by water during peroxide decomposition and chain growth and branching and the partial change in chemical oxidation with the formation of phenols and/or tertiary alcohols, which are inhibitors of oxidation reactions. On the other hand, water has almost no effect on the removal degree of sulfur compounds.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9352224 | PMC |
| http://dx.doi.org/10.1021/acsomega.2c02527 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Noncatalytic Reduction of Nitrogen Oxide and Soot Inhibition during Cocombustion with Biotar: The Molecular Dynamics Modeling Approach.
J Phys Chem A
January 2025
Nanjing Institute of Technology, Nanjing 211167, China.
Cocombustion with biomass tar is a potential method for NO reduction during fossil fuel combustion. In this work, the molecular dynamic method based on the reactive force field was used to study the NO reduction by phenol, which is a typical tar model compound. Results indicate that phenol undergoes significant decomposition at 3000 K, resulting in the formation of small molecular fragments accompanied by the generation of large molecular, network-structured soot particles.
View Article and Find Full Text PDFClay-catalyzed ozonation of Norfloxacin - Effects of metal cation and degradation rate on aqueous media toxicity towards Lemna minor.
Chemosphere
January 2025
Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C 3P8, Canada; École de technologie supérieure, Montréal (Québec), Canada, H3C 1K3. Electronic address:
Article Synopsis
- Norfloxacin was ozonized in clay suspensions to study its toxicity on Lemna minor, which helps assess antibiotic impact in environments with clay.
- The study found that norfloxacin causes toxicity in Lemna minor through oxidative stress, worsened by ozonation, affecting growth and chlorophyll levels.
- Results indicate that the type of clay catalyst and the oxidation process influence the toxicity outcomes, revealing the potential formation of more harmful byproducts from the antibiotic.
Singlets-Driven Photoredox Catalysts: Transforming Noncatalytic Red Fluorophores to Efficient Catalysts.
JACS Au
December 2024
Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States.
Red-light absorbing photoredox catalysts offer potential advantages for large-scale reactions, expanding the range of usable substrates and facilitating bio-orthogonal applications. While many red-light absorbing/emitting fluorophores have been developed recently, functional red-light absorbing photoredox catalysts are scarce. Many photoredox catalysts rely on long-lived triplet excited states (triplets), which can efficiently engage in single electron transfer (SET) reactions with substrates.
View Article and Find Full Text PDFCatalytically inactive subgroup VIII receptor-like cytoplasmic kinases regulate the immune-triggered oxidative burst in Arabidopsis thaliana.
J Exp Bot
November 2024
Department of Biology, Queen's University, Kingston ON Canada.
Protein kinases are key components of multiple cell signaling pathways. Several receptor-like cytoplasmic kinases (RLCKs) have demonstrated roles in immune and developmental signaling across various plant species, making them of interest in the study of phosphorylation-based signal relay. Here, we present our investigation of a subgroup of RLCKs in Arabidopsis thaliana.
View Article and Find Full Text PDFInsights into hydrothermal deconstruction and humification of vegetable waste by non-catalytic steam explosion.
J Environ Manage
January 2025
State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, China; Tianjin Agricultural University, Tianjin, 300384, China. Electronic address:
Article Synopsis
- This study focuses on improving the recycling of vegetable waste, particularly broccoli, using a new method called non-catalytic hydrothermal processing through steam explosion.
- The process successfully produces high yields of humic substances, specifically fulvic acid and humic acid, in just 30 minutes by utilizing thermal and acidic conditions.
- The research also clarifies the molecular structure of these humic substances, contributing valuable knowledge on their formation and supporting sustainable agricultural practices.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!