scholarly journals Hydrogen Production from Catalytic Polyethylene Terephthalate Waste Reforming Reaction, an overview

2020 ◽  
Vol 7 (1) ◽  
pp. 45-64
Author(s):  
Walid Nabgan ◽  
Bahador Nabgan ◽  
Tuan Amran Tuan Abdullah ◽  
Norzita Ngadi ◽  
Aishah Abdul Jalil ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Polyethylene Terephthalate ◽  
Steam Reforming ◽  
Liquid Product ◽  
Environmental Conservation ◽  
Plastic Waste ◽  
Low Carbon ◽  
Moderate Amount ◽  
Waste Products ◽  
Production Of Hydrogen

AbstractAs a sustainable and renewable energy carrier for transition, hydrogen is considered as a key future fuel for the low carbon energy systems. During the past few decades, attention has been given to the conversion of waste materials, including plastics to the production of hydrogen. Studies in this field are of great importance because they resolve numerous problems brought about by plastic waste with other forms of waste. Polyethylene terephthalate (PET) is one of the major products of plastic waste which constitutes a major threat to environmental conservation efforts and harms living organism. Phenol has been chosen in this study as a solvent for PET to produce hydrogen because of unwanted liquid product in the bio-oil. This research investigates catalytic steam reforming of phenol with dissolved PET for hydrogen production. The aim of this study was the review of a highly active and stable catalyst for hydrogen production from steam reforming waste products. The analysis of product composition indicated that steam reforming of PET-phenol generally produced a high amount of aliphatic branched-chain compounds, together with a moderate amount of cyclic compounds. The reaction conditions also led to the alkylation of phenol by the reforming products from the PET-phenol solution with and without the catalyst. In conclusion, this study explored new ways to use l product derived from waste plastic materials. It provides a promising clean technology, which employed polyethylene terephthalate waste dissolved in phenol (as a solvent) for hydrogen production.

scholarly journals Process analysis of solar steam reforming of methane for producing low-carbon hydrogen

RSC Advances ◽  
2020 ◽  
Vol 10 (21) ◽  
pp. 12582-12597 ◽  
Author(s):  
Enkhbayar Shagdar ◽  
Bachirou Guene Lougou ◽  
Yong Shuai ◽  
Enkhjin Ganbold ◽  
Ogugua Paul Chinonso ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Thermal Energy ◽  
Steam Reforming ◽  
Fossil Fuel ◽  
Process Analysis ◽  
Solar Thermal ◽  
Low Carbon ◽  
Solar Thermal Energy ◽  
Steam Reforming Of Methane

Integrating solar thermal energy into conventional SRM technology is a promising approach for low-carbon hydrogen production based on fossil fuel in near and midterm.

Pellet size dependent steam reforming of polyethylene terephthalate waste for hydrogen production over Ni/La promoted Al2O3 catalyst

2017 ◽  
Vol 42 (34) ◽  
pp. 21571-21585 ◽  
Author(s):  
Bahador Nabgan ◽  
Tuan Amran Tuan Abdullah ◽  
Muhammad Tahir ◽  
Walid Nabgan ◽  
Sugeng Triwahyono ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Polyethylene Terephthalate ◽  
Steam Reforming ◽  
Pellet Size ◽  
Size Dependent ◽  
Al2o3 Catalyst

scholarly journals Synthesis and Characterization of Co/Ni/CoNi-ZSM-5 Catalyst for Hydrogen Production

2018 ◽  
Vol 156 ◽  
pp. 06013
Author(s):  
Widayat Widayat ◽  
Arianti Nuur Annisa ◽  
Hantoro Satriadi ◽  
Syaiful Syaiful
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Hydrothermal Process ◽  
Coke Formation ◽  
Nickel Catalysts ◽  
Catalyst Synthesis ◽  
Cobalt Nickel ◽  
Crystalline Product ◽  
Production Of Hydrogen

Nickel is commonly used as a catalyst in hydrogen production. However, the use of nickel catalysts in the steam reforming process has the disadvantage of coke formation and high cost. Therefore, in this research, Ni/ZSM-5 catalyst synthesis was used to reduce production cost and an addition of cobalt (Co) metal to avoid coke formation. The method consists of a synthesis of ZSM-5 catalyst using hydrothermal process. Furthermore, the crystalline product was impregnated with the metal cobalt, nickel and combination of cobalt-nickel as much as 2% by weight metal/weight of the catalyst. Then the XRD and EDX characterization of Co/ZSM-5, Ni/ZSM-5, and CoNi/ZSM-5 was done followed by catalytic testing in the production of hydrogen from glycerol using steam reforming process. From XRD characterization results showed that Co/ZSM-5 catalyst has a crystallinity of 78.69%, Ni/ZSM-5 catalyst has 70.04% crystallinity and CoNi/ZSM-5 catalyst has 76.99% crystallinity. Catalytic testing on hydrogen production showed that CoNi/ZSM-5 catalyst produced the highest hydrogen concentration of 1,756.33 ppm while Ni/ZSM-5 catalyst produces 1,240 ppm and Co/ZSM-5 catalyst produces 491 ppm.

scholarly journals Adsorptive Recovery of Cu2+ from Aqueous Solution by Polyethylene Terephthalate Nanofibres Modified with 2-(Aminomethyl)Pyridine

2021 ◽  
Vol 11 (24) ◽  
pp. 11912
Author(s):  
Thandiwe Crystal Totito ◽  
Katri Laatikainen ◽  
Omoniyi Pereao ◽  
Chris Bode-Aluko ◽  
Leslie Petrik
Keyword(s):  
Aqueous Solution ◽  
Polyethylene Terephthalate ◽  
Formation Rate ◽  
Freundlich Isotherm ◽  
Plastic Waste ◽  
Planar Geometry ◽  
Batch Adsorption ◽  
Molecular Formula ◽  
Human Beings ◽  
Waste Products

The accumulation of plastic waste products in the environment has adversely affected wildlife and human beings. Common plastics that accumulate in the environment are plastics that are made of polyethylene terephthalate (PET) polymer. PET plastic waste products can be recycled for beneficial use, which would reduce their negative impacts. In this study, modified PET or waste PET (WPET) from plastic bottles was blended with powder commercial 2-(aminomethyl)pyridine (SiAMPy) resin and electrospun into composite nanofibres and applied for Cu2+ adsorption. PET-SiAMPy or WPET-SiAMPy composite nanofibres fibre diameters from the HRSEM images were 90–140 nm and 110–155 nm, respectively. In batch adsorption experiments, PET-SiAMPy or WPET-SiAMPy composite nanofibres achieved Cu2+ adsorption equilibrium within 60 secs of contact time with 0.98 mmol/g (89.87%) or 1.24 mmol/g (96.04%) Cu2+ adsorption capacity. The Cu2+ complex formation rate (k) with WPET-SiAMPy was 0.0888 with the mole ratio of Cu2+ and WPET-SiAMPy nanofibres 1:2. The complex molecular formula formed was Cu(WPET-SiAMPy)2 with a square planar geometry structure. The WPET-SiAMPy nanofibres’ adsorption was best fitted to the Freundlich isotherm. WPET-SiAMPy composite nanofibres were considered highly efficient for Cu2+ adsorption from aqueous solution and could be regenerated at least five times using 5 M H2SO4.

Embedding Pt‐SnO Nanoparticles into MIL‐101(Cr) Pores: Hydrogen Production with Low Carbon Monoxide Content from a New Methanol Steam Reforming Catalyst

2019 ◽  
Vol 4 (20) ◽  
pp. 6113-6122 ◽  
Author(s):  
Niloofar Kamyar ◽  
Yasin Khani ◽  
Mostafa M. Amini ◽  
Farzad Bahadoran ◽  
Nasser Safari
Keyword(s):  
Carbon Monoxide ◽  
Hydrogen Production ◽  
Steam Reforming ◽  
Methanol Steam Reforming ◽  
Low Carbon ◽  
Reforming Catalyst ◽  
Carbon Monoxide Content

Thermocatalytic decomposition of methane on carbon materials and its application in hydrogen production technologies

2021 ◽  
Vol 1 (1-2) ◽  
pp. 47-54
Author(s):  
A. R. Osipov ◽  
I. A. Sidorchik ◽  
D. A. Shlyapin ◽  
V. A. Borisov ◽  
N. N. Leontieva ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Carbon Materials ◽  
Chemical Properties ◽  
Methane Decomposition ◽  
Low Carbon ◽  
Low Carbon Economy ◽  
Production Of Hydrogen ◽  
Production Technologies ◽  
Carbon Catalysts ◽  
Physical And Chemical

It is topical now to find the ways of hydrogen production that would eliminate emission of carbon oxides into the atmosphere and provide implementation of the so-called low-carbon economy. The production of hydrogen via thermocatalytic methane decomposition (CMD) on carbon catalysts makes it possible to obtain not only a valuable environmentally friendly fuel represented by hydrogen but also various carbon materials that could be applied in different industries. The use of carbon catalysts is essential for economic efficiency of the methane decomposition process. This work is a review of CMD fundamentals and a brief report on the catalytic activity of carbon materials (activated carbon, carbon black, nanotubes and nanofibers) differing in their structure, physical and chemical properties, which were studied in the indicated process. The main problems and prospects for application of this technology were revealed.

Ni/Pd-promoted Al 2 O 3 –La 2 O 3 catalyst for hydrogen production from polyethylene terephthalate waste via steam reforming

2017 ◽  
Vol 42 (16) ◽  
pp. 10708-10721 ◽  
Author(s):  
Bahador Nabgan ◽  
Muhammad Tahir ◽  
Tuan Amran Tuan Abdullah ◽  
Walid Nabgan ◽  
Yahya Gambo ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Polyethylene Terephthalate ◽  
Steam Reforming

Steam-reforming of ethanol for hydrogen production

2011 ◽  
Vol 65 (3) ◽  
Author(s):  
Ahmed Bshish ◽  
Zahira Yaakob ◽  
Binitha Narayanan ◽  
Resmi Ramakrishnan ◽  
Ali Ebshish
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Molar Ratio ◽  
Ethanol Conversion ◽  
Impregnation Method ◽  
Reaction Conditions ◽  
Oxide Supports ◽  
Steam Reforming Of Ethanol ◽  
Production Of Hydrogen ◽  
Hydrogen Selectivity

AbstractProduction of hydrogen by steam-reforming of ethanol has been performed using different catalytic systems. The present review focuses on various catalyst systems used for this purpose. The activity of catalysts depends on several factors such as the nature of the active metal catalyst and the catalyst support, the precursor used, the method adopted for catalyst preparation, and the presence of promoters as well as reaction conditions like the water-to-ethanol molar ratio, temperature, and space velocity. Among the active metals used to date for hydrogen production from ethanol, promoted-Ni is found to be a suitable choice in terms of the activity of the resulting catalyst. Cu is the most commonly used promoter with nickel-based catalysts to overcome the inactivity of nickel in the water-gas shift reaction. γ-Al2O3 support has been preferred by many researchers because of its ability to withstand reaction conditions. However, γ-Al2O3, being acidic, possesses the disadvantage of favouring ethanol dehydration to ethylene which is considered to be a source of carbon deposit found on the catalyst. To overcome this difficulty and to obtain the long-term catalyst stability, basic oxide supports such as CeO2, MgO, La2O3, etc. are mixed with alumina which neutralises the acidic sites. Most of the catalysts which can provide higher ethanol conversion and hydrogen selectivity were prepared by a combination of impregnation method and sol-gel method. High temperature and high water-to-ethanol molar ratio are two important factors in increasing the ethanol conversion and hydrogen selectivity, whereas an increase in pressure can adversely affect hydrogen production.

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