Special Issue "Commemorative Issue in Honor of Professor Hugo de Lasa"

A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: 31 March 2020.

Special Issue Editors

Guest Editor
Prof. Dr. Benito Serrano Website E-Mail
University Autonoma de Zacatecas, Mexico
Interests: photocatalysis; reaction engineering; biomass catalytic gasification
Guest Editor
Prof. Dr. Mohammad Mozahar Hossain Website E-Mail
King Fahd University, Saudi Arabia
Interests: Reaction engineering, catalytic dehydrogenation of paraffins, chemical looping combustion, catalytic cracking of hydrocarbons

Special Issue Information

Dear Colleagues,

Our journal is pleased to publish a Special Issue in honor of Professor Hugo de Lasa. Hugo is a Professor at the Department of Chemical and Biochemical Engineering, Faculty of Engineering of Western University (UWO), London, Ontario, Canada. Hugo graduated in 1968 with an Ingeniero Quimico (Chemical Engineer) degree from the Universidad Nacional del Sur in Argentina, and in 1971 with a “Cum Laude” Doctorate degree from the Université de Nancy in France. Dr. de Lasa is the founding Director of UWO's Chemical Reactor Engineering Centre (CREC), which has received significant financial support over the years.

Dr. de Lasa holds 12 U.S. and Canadian patents, including that of the CREC-Riser Simulator for the development of next generation catalysts and environmentally friendly gasolines, that of the CREC-Optiprobes for the design of novel chemical reactors, that of the Pseudoadiabatic Catalytic Reactor for the development of environmentally friendly fuels, and more recently, that of the Photo-CREC Reactor for the elimination of pollutants in air, water, and hydrogen production. In 2003, Professor de Lasa founded RECAT Technologies Inc., which is a UWO-affiliated spin-off company, specializing in the development and commercialization of his inventions. Through CREC and Recat, Hugo de Lasa has been collaborating with a diversity of industries and governmental agencies from about 25 countries.

Hugo is the author of 349 peer-reviewed publications and 6 books. His work has received in excess of 8149 citations with a 47h index. He has successfully supervised more than 47 PhD and 34 MESc degrees. He is the first author of the 2005 leading book Photocatalytic Reaction Engineering, which has received more than 362 citations. Since 1998, Dr. de Lasa has received numerous awards in Canada and abroad. In 2005 and in 2018, Hugo received Honoris Causa Doctorate degrees in Chemical Engineering from the Universidad Autonoma de Zacatecas, Mexico and the Universidad Nacional de La Patagonia-San Juan Bosco, Argentina.

In honor and recognition of Professor Hugo de Lasa's outstanding career contributions to the fields of heterogeneous catalysis, photocatalysis and catalytic reaction engineering, this Special Issue of Catalysts welcomes the submission of previously unpublished manuscripts from original work or reviews in these areas. We plan to receive submissions from 1 July 2019 to 31 March 2020. Manuscripts will be published online on an ongoing basis after being processed.

Dr. Benito Serrano
Prof. Dr. Mohammad Mozahar Hossain
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 papers will be 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. Catalysts 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 1600 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.


  • catalytic processes
  • catalysts
  • photocatalysts
  • fluidized catalysts
  • green catalytic technologies

Published Papers

This special issue is now open for submission, see below for planned papers.

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Energy-saving UHMW Polymeric Flow Aids: Catalyst and Polymerization Process Development
Authors: Atiqullah M1*, Al-Sarkhi AS2, Al-Thenayan FM3, Al-Malki AR3, Alasiri HS1
Affiliations: 1 Center for Refining & Petrochemicals, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
2 Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
3 Saudi Aramco R&D Center, Dhahran 31311, Saudi Arabia
Abstract: Crude oil and refinery products are transported worldwide to meet human energy needs. During transportation through a pipeline, the pressure drastically drops due to interfacial friction between the pipe wall and the flowing fluid. Consequently, the desired throughput cannot be maintained. Increasing the input pressure and introducing higher flow rates seem to be a quick and facile solution. However, the pipeline design limitations does not favor this solution. Transportation over long distances further drops the pipeline pressure. The consequences are increased equipment and operational costs. Therefore, the efficient and economic transport of crude oils and refinery products is a challenge. Highly expensive ultrahigh molecular weight (UHMW, MW ≥ a million Dalton) drag reducing polymers (DRPs) are currently used to address this challenge. The present paper, therefore, emphasizes particularly on the development of a high-performance catalyst system that synthesizes DRPs using higher α-olefins. This homogeneous catalyst system features a new concept that uses a cost-effective titanium-based Ziegler-Natta precatalyst and a Lewis base cocatalyst having both steric hindrance and electronic effect. The novelty of this work has already been protected through several US patents. The subject catalyst prepares UHMW DRPs at room temperature, avoiding the use of zero and sub-zero temperature. The resulting product almost triples the rate of transportation of a selected grade of refinery product and saves about 50% pumping energy at ppm level pipeline concentration. Also, it is very easily soluble. Because of these advantages, installation of new pumps or modification of existing pipeline will be hardly necessary. This will save additional infrastructure cost. The current research identified several technical challenges that relate to catalyst and polymerization preprocess development. Hence, this paper will also summarize how the overall performance can be further improved through synthesis of novel heterogeneous catalysts, and the application of dispersed polymerization, molecular simulation-based product formulation, and theory of turbulent mixing in transportation pipeline.

Title: Dynamic and steady state evolution of active sites in H-ZSM-5 for the production of light olefins
Authors: Khalid A. Al-Majnouni, Wojciech Supronowics, Nabil Al-Yassir and Ahmed Al-Zenaidi
Abstract: Catalytic cracking of light liquid feed to produce light olefins emerges as a new tehnology to compete with existing thermal cracking that is capex and energy intensive technology. The catalyst used in the catalytic cracking is zeolite based catalyst having ZSM-5 as one of the components. The dynamic of the active sites evolution in ZSM-5 is investigated using hexane as a probe molecule to elucidate the role of the active sites on the reaction network and product distribution. The dynamic data obtained from riser simulator (more relevant to the actual process)  is compared with steady state data obtained from a fixed bed reactor at similar conditions. The products distribution from hexane cracking is controlled by monomelcualr reactions with little contribution from hdyrogen transfer reaction at steady state conditions. The olefins to paraffins ratio is above one. At short time on stream, aromatics formation is observed initially but disappeared later even at higher conversion. To understand the dynamic of the active sites, pulses of hexane are introduced to the riser simulator reactor to proble the catalyst initial activity. The products distribution shows that the olefins to paraffins ratio is hardly exceed one especially at low temperature indicating the considerable contribution of the hydrogn transfer reaction even at low conversion. When catalyst is partially deactivated, the contribution of hdyrogen trafer reaction is minimized and olefins to paraffins ratio improves. The paper will discuss in detail the role of Bronsted acid sites (BAS), and short lived sites (Lewis acid sites or redox sites) in the reaction network and address why BAS cannot explain the observed product distribution.

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