Heterogeneous Catalysis: Trends for a Sustainable Future

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: closed (27 June 2023) | Viewed by 1793

Special Issue Editor


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Guest Editor
Vasco da Gama CoLAB – Energy Storage, 4200-374, Porto, Portugal
Interests: homogeneous and heterogeneous catalysis; metal-oxide materials; oxidation reactions; sustainable processes; green chemistry

Special Issue Information

Dear Colleagues,

“All organisms modify their environment, and humans are no exception”. Over the past 200 years, the human activity resulting from their constant growth and expansion of technology, induced drastic effects on the planet triggering demand for sustainable technologies. Catalysis has been always associated with industrial development and greener procedures, in fact, is one of the pillars of Green Chemistry, and is fundamental for long-term sustainability. There are numerous chemical processes in which solid catalysts can make a difference, from pollutant removal to synthesis of novel and important materials.

This Special Issue of Applied Sciences calls for contributions from all areas in which Heterogeneous Catalysis directly or indirectly through the design, characterization, and production of novel solid catalysts to achieve the goals of human health and environmental protection with a strong incentive to industry evolution.

Dr. Diana Julião
Guest Editor

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Keywords

  • heterogeneous catalysis
  • solid catalysts
  • catalyst design and characterization
  • sustainable processes
  • green chemistry

Published Papers (1 paper)

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Research

20 pages, 6353 KiB  
Article
Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds
by Borislav Enchev Georgiev, Dicho Stoyanov Stratiev, Georgy Stoilov Argirov, Angel Nedelchev, Rosen Dinkov, Ivelina Kostova Shishkova, Mihail Ivanov, Krassimir Atanassov, Simeon Ribagin, Georgi Nikolov Palichev, Svetoslav Nenov, Sotir Sotirov, Evdokia Sotirova, Dimitar Pilev and Danail Dichev Stratiev
Appl. Sci. 2023, 13(6), 3755; https://doi.org/10.3390/app13063755 - 15 Mar 2023
Cited by 4 | Viewed by 1453
Abstract
The Urals and Siberian vacuum residues are considered difficult to process in the ebullated bed hydrocracking because of their increased tendency to form sediments. Their achievable conversion rate reported in the literature is 60%. Intercriteria analysis was used to assess data from a [...] Read more.
The Urals and Siberian vacuum residues are considered difficult to process in the ebullated bed hydrocracking because of their increased tendency to form sediments. Their achievable conversion rate reported in the literature is 60%. Intercriteria analysis was used to assess data from a commercial vacuum residue hydrocracker during processing blends from three vacuum residues: Urals, Siberian Light, and Basra Heavy. The analysis revealed that the main contributors to conversion enhancement is hydrodemetallization (HDM) and the first reactor ΔT augmentation. The increase of HDM from 40 to 98% and the first reactor ΔT (ΔT(R1)) from 49 to 91 °C were associated with a vacuum residue conversion enhancement of 62.0 to 82.7 wt.%. The developed nonlinear regression prediction of conversion from HDM and ΔT(R1) suggests a bigger influence of ΔT(R1) enhancement on conversion augmentation than the HDM increase. The intercriteria analysis evaluation revealed that the higher first reactor ΔT suppresses the sediment formation rate to a greater extent than the higher HDM. During processing Basrah Heavy vacuum residue, a reduction in hydrodeasphaltization (HDAs) from 73.6 to 55.2% and HDM from 88 to 81% was observed. It was confirmed that HDM and HDAs are interrelated. It was found that the attainment of conversion of 80 wt.% and higher during processing Urals and Siberian Light vacuum residues is possible when the HDM is about 90% and LHSV ≤ 0.19 h−1. Full article
(This article belongs to the Special Issue Heterogeneous Catalysis: Trends for a Sustainable Future)
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