scholarly journals Local Induction Heating Capabilities of Zeolites Charged with Metal and Oxide MNPs for Application in HDPE Hydrocracking: A Proof of Concept

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1029
Author(s):  
Marta Muñoz ◽  
Irene Morales ◽  
Cátia S. Costa ◽  
Marta Multigner ◽  
Patricia de la Presa ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Radio Frequency ◽  
Induction Heating ◽  
Catalytic Cracking ◽  
Hydrogen Atmosphere ◽  
Oil Refining ◽  
Proof Of Concept ◽  
Usy Zeolite ◽  
Additional Energy ◽  
Active Centre

Zeolites are widely used in high-temperature oil refining processes such as fluid catalytic cracking (FCC), hydrocracking, and aromatization. Significant energy cost are associated with these processes due to the high temperatures required. The induction heating promoted by magnetic nanoparticles (MNPs) under radio frequency fields could contribute to solving this problem by providing a supplementary amount of heat in a nano-localized way, just at the active centre site where the catalytic process takes place. In this study, the potential of such a complementary route to reducing energetic requirements is evaluated. The catalytic cracking reaction under a hydrogen atmosphere (hydrocracking) applied to the conversion of plastics was taken as an application example. Thus, a commercial zeolite catalyst (H-USY) was impregnated with three different magnetic nanoparticles: nickel (Ni), cobalt (Co), maghemite (γ-Fe2O3), and their combinations and subjected to electromagnetic fields. Temperature increases of approximately 80 °C were measured for H-USY zeolite impregnated with γ-Fe2O3 and Ni-γ-Fe2O3 due to the heat released under the radio frequency fields. The potential of the resulting MNPs derived catalyst for HDPE (high-density polyethylene) conversion was also evaluated by thermogravimetric analysis (TGA) under hydrogen atmosphere. This study is a proof of concept to show that induction heating could be used in combination with traditional resistive heating as an additional energy supplier, thereby providing an interesting alternative in line with a greener technology.

scholarly journals Induction Heating in Nanoparticle Impregnated Zeolite

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4013
Author(s):  
Irene Morales ◽  
Marta Muñoz ◽  
Catia S. Costa ◽  
Jose Maria Alonso ◽  
João Miguel Silva ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Induction Heating ◽  
Colloidal Suspension ◽  
Added Value ◽  
Solid Matrix ◽  
Inductive Heating ◽  
Usy Zeolite ◽  
Heating Efficiency ◽  
Heterogeneous Catalytic ◽  
Fe2o3 Nanoparticle

The ultra-stable Y (H-USY) zeolite is used as catalyst for the conversion of plastic feedstocks into high added value products through catalytic cracking technologies. However, the energy requirements associated with these processes are still high. On the other hand, induction heating by magnetic nanoparticles has been exploited for different applications such as cancer treatment by magnetic hyperthermia, improving of water electrolysis and many other heterogeneous catalytic processes. In this work, the heating efficiency of γ-Fe2O3 nanoparticle impregnated zeolites is investigated in order to determine the potential application of this system in catalytic reactions promoted by acid catalyst centers under inductive heating. The γ-Fe2O3 nanoparticle impregnated zeolite has been investigated by X-ray diffraction, electron microscopy, ammonia temperature program desorption (NH3-TPD), H2 absorption, thermogravimetry and dc and ac-magnetometry. It is observed that the diffusion of the magnetic nanoparticles in the pores of the zeolite is possible due to a combined micro and mesoporous structure and, even when fixed in a solid matrix, they are capable of releasing heat as efficiently as in a colloidal suspension. This opens up the possibility of exploring the application at higher temperatures.

scholarly journals Modulation of Crystallinity through Radiofrequency Electromagnetic Fields in PLLA/Magnetic Nanoparticles Composites: A Proof of Concept

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4300
Author(s):  
Marta Multigner ◽  
Irene Morales ◽  
Marta Muñoz ◽  
Victoria Bonache ◽  
Fernando Giacomone ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnetic Nanoparticles ◽  
Electromagnetic Fields ◽  
Biomedical Applications ◽  
Infrared Camera ◽  
Proof Of Concept ◽  
Scanning Calorimetry ◽  
Radiofrequency Electromagnetic Fields ◽  
Degradation Properties ◽  
Heat Released

To modulate the properties of degradable implants from outside of the human body represents a major challenge in the field of biomaterials. Polylactic acid is one of the most used polymers in biomedical applications, but it tends to lose its mechanical properties too quickly during degradation. In the present study, a way to reinforce poly-L lactic acid (PLLA) with magnetic nanoparticles (MNPs) that have the capacity to heat under radiofrequency electromagnetic fields (EMF) is proposed. As mechanical and degradation properties are related to the crystallinity of PLLA, the aim of the work was to explore the possibility of modifying the structure of the polymer through the heating of the reinforcing MNPs by EMF within the biological limit range f·H < 5·× 109 Am−1·s−1. Composites were prepared by dispersing MNPs under sonication in a solution of PLLA. The heat released by the MNPs was monitored by an infrared camera and changes in the polymer were analyzed with differential scanning calorimetry and nanoindentation techniques. The crystallinity, hardness, and elastic modulus of nanocomposites increase with EMF treatment.

Magnetic Ferrous Fluid for Microplastics Extraction Application

2021 ◽  
Vol 1030 ◽  
pp. 138-145
Author(s):  
L.S. Yeo ◽  
M.R.M. Julaihi
Keyword(s):  
Surface Tension ◽  
Magnetic Nanoparticles ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Solid Particles ◽  
Polluted Water ◽  
Physical Interaction ◽  
Proof Of Concept ◽  
Science Fair ◽  
Treatment Techniques

The study in microplastics removal using nanomaterials is relatively new and the majority of treatment techniques lies in water treatment plant. This research aims to study an innovative approach to mechanically remove microplastics from polluted water inspired by Fionn Ferreira who won the Google Science Fair in 2019. Experiments are designed and conducted to identify the efficiency of the method with varied oil to nanoparticles ratio. Additionally, possible application of the concept was explored presented as a proof of concept. The technique takes advantage of the relatively low surface tension of oil and immiscible properties in water as an adhesive element between the microplastics and magnetic nanoparticles. Stirring the mixture binds all particle components to the oil medium and then removed from the water using a magnet. Since this is a physical interaction, the technique is not limited to microplastics but other solid particles as well. The results presented in this paper concludes the suggested treatment achieved the highest microplastic extraction percentage at 97.312%. The associated ratio was recorded to be a 1:1 unit volume of oil to nanoparticles. The ratio provides sufficient viscosity and surface tension for ease of microplastics extraction. The novelty of the treatment lies in the reusability of the oiled magnetic nanoparticles as a filter medium. Furthermore, a design inspired by gravity sand filter was presented in this paper as a proof of concept and potential application.

Curing of a Bisphenol E Based Cyanate Ester Using Magnetic Nanoparticles as an Internal Heat Source through Induction Heating

2013 ◽  
Vol 5 (21) ◽  
pp. 11329-11335 ◽  
Author(s):  
Jeremiah W. Hubbard ◽  
François Orange ◽  
Maxime J.-F. Guinel ◽  
Andrew J. Guenthner ◽  
Joseph M. Mabry ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Heat Source ◽  
Induction Heating ◽  
Internal Heat ◽  
Internal Heat Source ◽  
Cyanate Ester

Localized cancer treatment by radio-frequency hyperthermia using magnetic nanoparticles immobilized on graphene oxide: from novel synthesis to in vitro studies

2018 ◽  
Vol 6 (33) ◽  
pp. 5385-5399 ◽  
Author(s):  
Ravi Kumar ◽  
Anjali Chauhan ◽  
Sushil K. Jha ◽  
Bijoy Kumar Kuanr
Keyword(s):  
Graphene Oxide ◽  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Radio Frequency ◽  
Cancer Treatment ◽  
In Vitro Studies ◽  
Hybrid Nanocomposite ◽  
Novel Synthesis ◽  
Hyperthermia Therapy

Innovative, theranostic hybrid nanocomposite of graphene oxide and iron oxide for radio-frequency hyperthermia therapy.

Modeling Fluid Catalytic Cracking in a Novel CREC Riser Simulator: Adsorption Parameters under Reaction Conditions

2003 ◽  
Vol 1 (1) ◽  
Author(s):  
Jesus A Atias ◽  
Gabriela M Tonetto ◽  
Hugo Ignacio de Lasa
Keyword(s):  
Catalytic Cracking ◽  
Batch Reactor ◽  
Fluid Catalytic Cracking ◽  
Zeolite Catalysts ◽  
Initial Reaction ◽  
Adsorption Parameters ◽  
Reaction Conditions ◽  
Reactor Unit ◽  
Usy Zeolite ◽  
Heats Of Adsorption

The complexity of a heavy gas oil feedstock and the multitude of reaction pathways have limited previous attempts to model fluid catalytic cracking (FCC). The demand for more detailed kinetic information motivates the use of pure components to first elucidate the dominant pathways and mechanisms and then determine the associated rate parameters, including adsorption constants and heats of adsorption. The aim of the present work is to evaluate adsorption constants and heats of adsorption, under FCC relevant reaction conditions. The experiments are carried out in a novel CREC Riser Simulator (batch reactor unit) using USY zeolite catalysts with different crystallite sizes (0.4 and 0.9 microns). This study confirms a special feature of the CREC Riser Simulator, as a valuable tool for the study of adsorption phenomena. Adsorption constants and heats of adsorption are evaluated for benzene, toluene, xylene and trimethylbenzene, at initial reaction conditions. Catalytic conversion experiments for 1,2,4-trimethylbenzene help to demonstrate the consistency of the determined adsorption parameters at various temperatures and reaction times. In addition, adsorption constants and heats of adsorption are found to be constant throughout the reaction time and the formation of coke does not hinder the adsorption of 1,2,4-TMB, although it significantly affects the reactivity of this model compound.

an assessment of RADIO FREQUENCY INDUCTION HEATING OF BLOOD for massive transfusion

1967 ◽  
Vol 46 (1) ◽  
pp. 96???100 ◽  
Author(s):  
J. M. E. du PLESSIS ◽  
A. B. BULL ◽  
J. L. N. BESSELING
Keyword(s):  
Radio Frequency ◽  
Induction Heating ◽  
Massive Transfusion

Stabilized hierarchical USY zeolite catalysts for simultaneous increase in diesel and LPG olefinicity during catalytic cracking

2013 ◽  
Vol 3 (4) ◽  
pp. 972 ◽  
Author(s):  
Cristina Martínez ◽  
Danny Verboekend ◽  
Javier Pérez-Ramírez ◽  
Avelino Corma
Keyword(s):  
Catalytic Cracking ◽  
Zeolite Catalysts ◽  
Simultaneous Increase ◽  
Usy Zeolite
Sign in / Sign up

Export Citation Format

Share Document