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7 articles for “Activated Alumina”
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Design and Modification of Air Dehumidifier: A Review
Abstract: Abstract Air dehumidifier can be designed and modeled working on the simple principle of dehumidification of compressed air by means of collision with the number of cylinders arranged in series. This dehumidifier does not require any hygroscopic media or absorptive media such as activated alumina, silica gel, salt tablets, etc., which are used in other dehumidifiers. It does not require any refrigerant which is used in the refrigerated dehumidifier. The …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 1, 2016 · pp. 1–3 Read article
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Influences of Silica Fume to Engineering Properties of High Volume Fly Ash Concrete (HVFC)
Abstract: High volume fly ash concrete (HVFC) is one kind of the most promising concrete materials in the 21st century. HVFC has special properties such as high flowability, mechanical strength meets the requirements of contruction standards, low permeability, high durability, and others. Furthermore, HVFC is able to continuously develop strength during long time because the high activity alumina-silicates in the fly ash particles are dissolved slowly and prolong. Therefore, this study …
Published in Journal of Polymer & Composites · Vol. 9, Issue 3, 2021 · pp. 33–44 Read article
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Properties of Binary Waste Based Geopolymer Concrete Composite: A Review
Abstract: Concrete composite as construction material is utilized all over the world and it is not considered as eco-friendly because cement is provided as a binder in it. Therefore, replacing binder in concrete composite by alumina and silica rich by-products in presence of chemical activators give rise to geopolymer concrete composite which is eco-friendly in nature. Geopolymer concretes composite can be used to build a variety of structural configurations, have a …
Published in Journal of Polymer & Composites · Vol. 13, Issue 2, 2025 · pp. 44–52 Read article
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H2 Production by Methanol Steam Reforming over Copper Impregnated Anodized Aluminum Oxide (AAO)
Abstract: Hydrogen production by methanol steam reforming (MSR) is easy and simple as compared to other reforming methods using fossil fuels such as methane steam reforming. The catalysts for MSR are well developed and available commercially. When constructing a small or micro reformer, the catalyst often needs to be coated on the wall of the metal substrate. In this case, the bonding between the metal surface and the catalyst layer must …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 1, 2014 · pp. 23–28 Read article
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A Review of Properties of Geopolymer Concrete
Abstract: The growing need for concrete around the world has led to both more concrete being made and more of it being used. Carbon dioxide is released into the atmosphere when regular Portland cement is made, which contributes to global warming (OPC). because concrete that is good for the environment needs new kinds of binders. Using different binders could cut down on the energy needed to make traditional concrete and the …
Published in Journal of Polymer & Composites · Vol. 11, Issue 4, 2023 · pp. 60–69 Read article
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Hot Corrosion Behaviour of Sol-Gel Alumina Coated IN625 Alloy in Alkali Metal Chlorides and Sulphates Salt Deposit Systems
Abstract: Sol-gel derived alumina coating was applied on Inconel 625 alloy using dip coating technique and their hot corrosion studies were carried out in LiCl-NaCl and Na2SO4-K2SO4 salt deposits system at 650 °C and 850 °C respectively. Oxidation kinetics measurement indicated the occurrence of an order of magnitude lower oxidation rate and around 15–20 % higher activation energy for the coated substrate as compared to uncoated one. EDS analysis of the …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 1, 2016 · pp. 9–16 Read article
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Synthesis, Characterization of Mesoporous Zeolite BEA and Its Application in Multicomponent Reactions
Abstract: Strongly acidic mesoporous zeolite beta (MZB or Beta/MCM-41composite) with bimodal pore structure and stepwise distributed acidity has been synthesized by novel route using zeolite BEA as silica-alumina source. The material was characterized by various techniques. Powder XRD showed the existence of well-structured microphase zeolite Beta and mesophase MCM-41 in the composite materials. The performance of the composite material as a catalyst was investigated for the synthesis of various biologically active …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 3, 2014 · pp. 25–45 Read article