Enzo Mangano

Enzo Mangano
The University of Edinburgh | UoE · Institute for Materials and Processes (IMP)

PhD

About

53
Publications
28,666
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2,670
Citations
Citations since 2016
38 Research Items
2370 Citations
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400

Publications

Publications (53)
Article
An optimized Friedel-Crafts based methodology used to prepare high surface area and pore volume hyper-cross-linked polymers (HCPs) is presented here. A significant reduction in catalyst quantities resulted in an HCP showing SSABET of 905 m2/g and total pore volume of ≈1.12 cm3/g. Spectroscopic investigations (DR-FTIR and SS-NMR) reveal that lowerin...
Article
A novel adsorption differential volumetric apparatus was developed for the determination of diffusional time constants in nanoporous materials and applied to diffusion of nitrogen and argon in commercial pellets of 4A zeolite. The system is designed for high rates of data acquisition allowing to determine mass transfer time constants of seconds ove...
Article
Full-text available
Experimental measurements of systems with slow gas transport kinetics are generally considered a relatively easier task when compared to the challenges of measurements of very fast systems. On the other hand, when the transport process goes towards time constants of the order of several hours, not only the measurements, but also the analysis and in...
Article
In all silica-gel adsorption processes driven by low-grade heat, the kinetics of adsorption of water on silica-gel is very important in order to optimize design and becomes an essential factor in ultra-low grade heat applications. A new approach for the determination of the mass transfer coefficient of water in commercial silica-gel is proposed and...
Conference Paper
Full-text available
UTSA-16 is considered as one of most promising Metal-Organic Frameworks (MOFs) for post combustion carbon capture in a vacuum swing adsorption (VSA) process. Current studies base their predictions on the equilibrium information for the crystalline material and assuming that the mass transfer is dominated by macropore diffusion. Performance of the r...
Article
Full-text available
The problem of measuring sorption kinetics in microporous adsorbents and distinguishing experimentally between surface resistance and internal diffusion is discussed and reviewed with reference to several commonly used experimental techniques; direct uptake rate measurements, zero length column (ZLC), frequency response, PFG NMR and interference mi...
Article
Full-text available
The zero length column technique has been developed over the past 30 years as a versatile experimental method to measure adsorption equilibrium and kinetics. In this review we discuss in detail the theory that forms the basis for the technique in order to understand how to design and operate efficiently a system. Experimental checks that should be...
Article
Full-text available
The availability of commercial gravimetric and volumetric systems for the measurement of adsorption equilibrium has seen also a growth of the use of these instruments to measure adsorption kinetics. A review of publications from the past 20 years has been used to assess common practice in 180 cases. There are worrying trends observed, such as lack...
Article
Full-text available
The SARS-CoV-2 virus is primarily transmitted through virus-laden fluid particles ejected from the mouth of infected people. Face covers can mitigate the risk of virus transmission but their outward effectiveness is not fully ascertained. Objective: by using a background oriented schlieren technique, we aim to investigate the air flow ejected by a...
Article
Full-text available
Respiratory droplets are the primary transmission route for SARS-CoV-2, a principle which drives social distancing guidelines. Evidence suggests that virus transmission can be reduced by face coverings, but robust evidence for how mask usage might affect safe distancing parameters is lacking. Accordingly, we set out to quantify the effects of face...
Article
Full-text available
This paper reports the results of an international interlaboratory study led by the National Institute of Standards and Technology (NIST) on the measurement of high-pressure surface excess methane adsorption isotherms on NIST Reference Material RM 8850 (Zeolite Y), at 25 °C up to 7.5 MPa. Twenty laboratories participated in the study and contribute...
Preprint
Full-text available
Respiratory droplets are the primary transmission route for SARS-CoV-2. Evidence suggests that virus transmission can be reduced by face coverings, but robust evidence for how mask usage might affect safe distancing parameters is lacking. Accordingly, we investigate the effectiveness of surgical masks and single-layer cotton masks on mitigating dis...
Chapter
The determination of mass transport coefficients is essential for the design of adsorption separation processes, especially for those driven by kinetic selectivity. In this chapter, a specific focus is given to the experimental measurements of adsorption kinetics in nanoporous zeolites. A selection of zero length column (ZLC) experiments on a serie...
Article
Polymers of Intrinsic Microporosity represent one of the most promising polymeric materials for gas separation applications. Their very rigid and contorted backbone induces unusually high free volumes and high internal surface area, with high gas permeabilities and moderate ideal selectivity, especially for O2/N2, CO2/N2 pairs with values lying abo...
Preprint
Full-text available
The SARS-CoV-2 virus is primarily transmitted through virus-laden fluid particles ejected from the mouth of infected people. In some countries, the public has been asked to use face covers to mitigate the risk of virus transmission - yet, their outward effectiveness is not ascertained. We used a Background Oriented Schlieren technique to investigat...
Article
Carbon molecular sieves are used in kinetically controlled separation processes. The mass transport in these materials can be quite complex as a result of their structure. In this contribution carbon dioxide uptake in a commercial carbon molecular sieve is analysed to show that the dynamic response does not correspond to a single mass transfer time...
Article
Full-text available
In this study, the adsorption properties of a Stöber silica‐based material towards CO2 were evaluated for the first time. The use of Stöber silica as support is interesting for real technological applications mainly due to economic factors. Furthermore, a direct comparison between the non porous Stöber sample with an ordered porous material (based...
Article
Full-text available
In this paper, we describe the synthesis and gas adsorption properties of a porous carbonaceous material, obtained from commercial expanded polystyrene. The first step consists of the Friedel-Craft reaction of the dissolved polystyrene chains with a bridging agent to form a highly-crosslinked polymer, with permanent porosity of 0.7 cm 3 /g; then, t...
Article
The mass transfer coefficient is a fundamental property needed to design adsorption gas separations. A collaborative study is presented where commercial LiLSX beads used in air vacuum swing adsorption for the production of oxygen are tested in two volumetric apparatuses. The initial results based on the software available in the commercial system s...
Article
Full-text available
The original version of this article was published open access. Unfortunately, due to a technical issue, the copyright holder name in the online version (HTML and XML) is incorrectly published as “Springer Science+Business Media, LLC, part of Springer Nature 2018”. Instead, it should be “The Author(s) 2018”.
Article
Full-text available
This paper reports the results of an international interlaboratory study led by the National Institute of Standards and Technology (NIST) on the measurement of high-pressure surface excess carbon dioxide adsorption isotherms on NIST Reference Material RM 8852 (ammonium ZSM-5 zeolite), at 293.15 K (20 °C) from 1 kPa up to 4.5 MPa. Eleven laboratorie...
Article
A series of ultra-light aerogels made of oxidized carbon nanotubes and cross-linked polyvinyl alcohol has been prepared by freeze drying of hydrogels, characterised, and tested as amine impregnated solid supports for CO2 capture. The prepared spongy aerogels have demonstrated mechanical, chemical and thermal stability, and are electrically conducti...
Article
The CO2 adsorption properties of hybrid organic-inorganic MCM-41 silicas with different particle size are here described. Micrometric to nanometric MCM-41 are functionalized by introducing amino groups via grafting of 3-[2-(2-aminoethyl)aminoethyl]aminopropyltrimethoxysilane (PAPTS). A combination of FTIR and SS-NMR spectroscopies are adopted to di...
Article
A Hybrid organic-inorganic SBA-15 silicas functionalized with increasing amounts of amino groups were studied in this work aiming to evaluate the effects of their physico-chemical properties on CO2 capture ability. Three different amino-silane species were used: 3-aminopropyltriethoxysilane (APTS), 3-(2-aminoethyl) aminopropyltrimethoxysilane (EAPT...
Article
Full-text available
The formulation of a thermodynamic framework for mixtures based on absolute, excess or net adsorption is discussed and the qualitative dependence with pressure and fugacity is used to highlight a practical issue that arises when extending the formulations to mixtures and to the Ideal Adsorbed Solution Theory (IAST). Two important conclusions are de...
Article
The adsorption of CO2 on zeolite Li-Rho (unit cell composition Li9.8Al9.8Si38.2O96) has been investigated by the measurement of adsorption isotherms (273 – 300 K), breakthrough curves with a CO2/CH4/He mixture (308 K) and in situ synchrotron X-ray powder diffraction in CO2 (298 K). The Rho framework distorts when in the Li-form to give a shape sele...
Article
The zero length column (ZLC) technique is used to investigate the stability of Mg- and Ni-CPO-27 metal-organic framework (MOF) crystals in the presence of water and humid flue gas. The design of the ZLC enables the stability test to be conducted over a considerably shorter time period and with lower gas consumption than other conventional technique...
Article
Full-text available
The key challenge in post combustion capture from gas fired power plants is related to the low CO2 concentration in the flue gas (4 to 8% by volume). This means that conventional amine processes will result in a relatively high energy penalty while novel adsorbents and adsorption processes have the potential to improve the efficiency of separation....
Article
Full-text available
The definitions of absolute, excess and netadsorption in microporous materials are used to identify thecorrect limits at zero and infinite pressure. Absoluteadsorption is shown to be the fundamental thermodynamicproperty and methods to determine the solid density thatincludes the micropore volume are discussed. A simplemeans to define when it is ne...
Article
In 2005, the IPCC SRCCS recognized the large potential for developing and scaling up a wide range of emerging CO2 capture technologies that promised to deliver lower energy penalties and cost. These included new energy conversion technologies such as chemical looping and novel capture systems based on the use of solid sorbents or membrane-based sep...
Article
In order to automate and improve the analysis of the experimental Zero Length Column (ZLC) data a general adsorption simulator is applied to the simulation of the ZLC system. The output of this ZLC simulation is linked to a hybrid optimisation strategy: combining a global Genetic Algorithm (GA) with a local Nelder–Mead algorithm ensures an efficien...
Conference Paper
Examples of adsorption kinetics with powders and pellets are presented in order to investigate in detail the use of the Quantachrome Autosorb iQ for the determination of mass transfer kinetics in nano-, meso- and macro-porous adsorbents. The interpretation of volumetric dynamic experiments is extended to the uptake of argon at liquid argon temper...
Article
The Ideal Adsorbed Solution (IAS) theory has been shown to predict reliably multicomponent adsorption for both gas and liquid systems. There is a lack of understanding of the conditions which guarantee convergence for various algorithms used to solve the IAS theory equations and inconsistencies are present in the reported computational effort requi...
Article
Full-text available
In recent years, Carbon Capture and Storage (Sequestration) (CCS) has been proposed as a potential method to allow the continued use of fossil-fuelled power stations whilst preventing emissions of CO 2 from reaching the atmosphere. Gas, coal (and biomass)-fired power stations can respond to changes in demand more readily than many other sources of...
Conference Paper
Full-text available
Here we present the results of the rapid screening of novel adsorbents for CO2 capture. The materials were synthesized as part of the Innovative Gas Separations for Carbon Capture (IGSCC) project, a UK wide consortium which involves the University of Edinburgh in collaboration with the University of St. Andrews, Cardiff University, Imperial College...
Conference Paper
Full-text available
Here we present the combination of our adsorption process simulator with a hybrid optimisation strategy for the automated analysis of a series of ZLC experiments. The Zero Length Column (ZLC) method is an established technique for the measurement of the kinetic and equilibrium properties of adsorption systems. Briefly, in the ZLC method the desorpt...
Article
To obtain reliable diffusivity data it is essential that the zero length columns (ZLC) response curve is measured under conditions of kinetic control. For systems with a mildly favorable isotherm, the form of the ZLC response curve under equilibrium control is very similar to that for a linear system under kinetic control. For an equilibrium contro...
Thesis
In this work the experimental results from the rapid screening and ranking of a wide range of novel adsorbents for carbon capture are presented. The samples were tested using the Zero Length Column (ZLC) method which has proved to be an essential tool for the rapid investigation of the equilibrium and kinetic properties of prototype adsorbents. The...
Article
Full-text available
A systematic study of the diffusion mechanism of CO2 in commercial 13X zeolite beads is presented. In order to gain a complete understanding of the diffusion process of CO2, kinetic measurements with a zero length column (ZLC) system and a volumetric apparatus have been carried out. The ZLC experiments were carried out on a single bead of zeolite 1...
Conference Paper
The Quantachrome Autosorb-iQ™ is a state-of-the-art volumetric system for the measurement of BET surface areas, micropore volumes and adsorption isotherms of gases on solid adsorbents. It comes with a library of software tools which will interpret automatically the experimental results and yield the required equilibrium properties. As part of the...
Conference Paper
Here we present the use of the ZLC technique to investigate the diffusion of CO2in different Ion-exchanged Zeolites Rho samples. The sample were synthesised at the University of St. Andrews and tested at the University of Edinburgh using the ZLC method as part of the Innovative Gas Separations for Carbon Capture (IGSCC) project. The ZLC technique...
Article
A series of univalent cation forms of zeolite Rho (M(9.8)Al(9.8)Si(38.2)O(96), M = H, Li, Na, K, NH(4), Cs) and ultrastabilized zeolite Rho (US-Rho) have been prepared. Their CO(2) adsorption behavior has been measured at 298 K and up to 1 bar and related to the structures of the dehydrated forms determined by Rietveld refinement and, for H-Rho and...
Conference Paper
Full-text available
This study reports the behaviour of ion exchanged small pore zeolites (Chabazite and Rho) as prom-ising CO 2 adsorbents from flue gas. We present the effect of extra-framework cation type and con-centration on the zeolites' structure and their adsorption of N 2 and CO 2 which can reach 3.5 mmol g -1 at relevant conditions (300 K and 0.1 bar P CO2)....
Conference Paper
Full-text available
This work concerns a new experimental technique based on Digital Image Analysis for the measurement of the mixing behaviour in a bi-dispersed 2D fluidized bed. Two different sets of particles are fluidized with the same density and different size. The technique is based on suitable color-field decomposition of the fluidized bed snapshots, where par...

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