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1957 articles for “activation” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Thermal Behavior of Biomass Ashes with the Influence of Additives: A Critical Review
Abstract: The gasification of biomass is undoubtedly one of the most promising processes for sustainable energy and heat production. The formation of low-melting ashes can compromise the proper functioning of plants. To address potential risks of ash fusion and agglomerate formation in high-temperature zones that may occur in downdraft reactor configurations, a detailed literature review on the use of additives to counteract the risk of ash formation and deposition has been …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 14, Issue 3, 2024 · pp. 1–11 Read article
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Optimizing Residential Energy Costs with PEV-based Energy Storage and Particle Swarm Optimization
Abstract: This research addresses the critical challenge of optimizing electrical energy usage amidst the increasing integration of variable renewable energy sources and the widespread adoption of electric vehicles (EVs). The core objective is to alleviate the energy cost burden for residential consumers by leveraging the capacity of Plug-in Electric Vehicles (PEVs) as an auxiliary energy source. Through innovative utilization of PEVs for both charging and discharging actions based on dynamic electricity …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 14, Issue 3, 2024 · pp. 19–29 Read article
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Catalytic Trends of OsO4 for the Taurine-Bromamine-T Redox System: Kinetic and Mechanistic Chemistry of Catalyzed and Uncatalyzed Reactions
Abstract: Taurine (2-ethane aminosulfonic acid) facilitates as a building block for protein synthesis, also possessing various other vital biological functions. Literature survey revealed that there was no report available on the oxidation of taurine with any oxidants from its kinetic, mechanistic and catalytic aspects. A detailed comparative mechanistic study of its Os(VIII) catalyzed and uncatalyzed oxidation kinetics by bromamine-T (BAT) in NaOH medium at 313 K revealed the rate law to …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 3, 2017 · pp. 5–19 Read article
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Extraction and Characterization of Antioxidants from the Seeds of Ethiopian Avocado Variety, Pinkerton
Abstract: The objective of this study was to extract and characterize the antioxidants from the Ethiopian avocado seeds of the Pinkerton variety, using ethanol as a solvent. Response surface methodology (RSM) in combination with Box-Behnken experimental design with a three level, three-factor mixture design was used to optimize the extraction condition for assessing the maximum yield of antioxidant from the avocado seeds. Ethanol concentration (%, v/v), temperature (°C) and time (h) …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 3, 2017 · pp. 49–56 Read article
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APPLICATION OF AGRO BASED RESUIDALS FOR THE PRODUCTION OF SURACTANT ON IOR USING MICROBES
Abstract: Utilization of surfactants for IOR is an accepted technique with high potential. However, technology application is frequently limited by cost. Biosurfactants (surface-active molecules produced by microorganisms) are commonly used in specialty markets such as food and textiles and have potential for IOR application. Currently, biosurfactants are not widely utilized in the petroleum industry due to high production costs associated with use of expensive substrates and inefficient product recovery methods. The …
Published in Journal of Catalyst & Catalysis · Vol. 5, Issue 3, 2018 · pp. 1–4 Read article
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Catalytic Performance of Fe Modified Zeolite Beta for Synthesis of Xylene
Abstract: The catalytic performance of metal exchanged zeolite for the synthesis of xylene was determined in the present investigation. The experiments were carried out for alkylation of toluene with methanol over Fe modified zeolite beta for the production of xylene in a plug flow reactor. Modification of zeolite beta with Fe brings significant increase in the activity of catalyst and selectivity of the product xylene. A time on stream study showed …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 2, 2017 · pp. 27–34 Read article
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Catalyst: From Lab to Industry
Abstract: To know about the catalyst industry, first we have to understand what is the catalyst and how it is used, we are very familiar with the reactions in lab but the journey of the catalyst from lab to the industry plants are quite interesting, first of all what is catalyst then. Catalysts are substances that speed up reactions by providing an alternative pathway for the breaking and making of bonds. …
Published in Journal of Catalyst & Catalysis · Vol. 3, Issue 2, 2016 · pp. 44–45 Read article
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Mechanistic and Catalytic Behavior of Os(VIII) for the Chlorpheniramine Maleate and Bromamine-B Redox System: A Kinetics Based Approach
Abstract: Chlorpheniramine maleate (CPM) is an important antihistamine agent. To the best of our knowledge there is no report in the literature about the oxidation of CPM with halogen + 1 oxidant from the stand point of its kinetics and mechanistic chemistry. Hence, a systematic kinetics and mechanistic study on the oxidation of CPM with bromamine-B (BAB) in the presence of NaOH and Os(VIII) catalyst has been carried out at 303 …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 1, 2015 · pp. 18–31 Read article
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Effect of MoO3 as a Promoter in Cu-Mgo-Al2O3 (Hydrotalcite like Precursor) Catalyst for the Vapour Phase Hydrogenation of Cinnamaldehyde
Abstract: An attempt has been made to study the role of MoO3 as promoterin Cu-MgO-Al2O3 (hydrotalcite like precursor) for the hydrogenation of cinnamaldehyde in vapour phase at atmospheric pressure. It is interesting to note that the MoO3 addition plays an important role in maintaining enhanced activity and stability of the catalyst by avoiding agglomeration of Cu species during the time on stream study. The discrepancy in the catalysts was clearly monitored …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 2, 2015 · pp. 27–32 Read article
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Pt (II) Schiff Base Complex Catalyzed Oxidation of Internal and Terminal Alkenes
Abstract: Pt (II) complexes of Schiff base ligands were found highly efficient towards the catalytic oxidation of internal alkenes and terminal alkenes in dimethylformamide (DMF) solvent under normal pressure of molecular oxygen. In some catalytic reactions, H2O2 was also used as co-oxidant. No diminished catalytic activity was observed even after six to eight repeated catalytic runs. Effect of temperature and extra ligand etc. on the rate of oxidation, nature and percentage …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 3, 2015 · pp. 7–15 Read article
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Synthesis of Copper Oxide Nanoparticles using Ultrasound for the Treatment of Textile Organic Dyes (Reactive Black 5 and Basic Blue 3)
Abstract: This paper describes the ultrasound assisted synthesis of copper oxide (CuO) nanoparticles using copper nitrate trihydrate and ammonium carbonate as reactants. The resultant product, copper carbonate was calcined at 400°C which was chosen based on the thermogravimetric analysis of copper carbonate precipitate. The final product CuO nanoparticles characterized by X-Ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDAX), particle size analyzer (PSA) and Brunner-Emmet-Teller surface area analyzer (BET) …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 3, 2015 · pp. 16–22 Read article
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A One-Step Selective Oxidation of Benzene to Phenol over CuCr2O4 Spinel Nanoparticles Catalyst with Air as Oxidant
Abstract: in presence of the cationic surfactant, cetyltrimethylammonium bromide and hydrazine. Detailed characterization of the material was carried out by XRD, BET, ICP-AES, SEM and TEM. XRD revealed the exclusive formation of CuCr2O4 spinel phase and TEM showed the formation of 30–50 nm particle size. The catalyst was highly active for selective oxidation of benzene to phenol with air as oxidant. Influence of reaction parameters were investigated in detail. The advantages …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 1, 2014 · pp. 1–7 Read article
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Alcohol Oxidation in Ionic Liquids Catalysed by Recyclable Platinum Nanoparticles: A Green Approach
Abstract: The effect of particle size on the catalytic performance of materials in organic reactions is of scientific and industrial importance. In the present case we demonstrate the use of room temperature ionic liquids as effective agents of dispersion of platinum nanoparticles prepared from potassium tetrachloroplatinate. The platinum nanoparticles in the range 2.5±0.5 nm are recyclable catalysts for aerobic oxidation of alcohols under mild conditions. The particles suspended in ionic liquids …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 1, 2014 · pp. 15–22 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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Ru(III)-Catalyzed Oxidative Cleavage of Ritodrine Hydrochloride: A Kinetic and Mechanistic Study
Abstract: A systematic kinetic and mechanistic study of the oxidation of ritodrine hydrochloride (RTH) with chloramine-T (CAT) in both HClO4 and NaOH media has been carried out at 303 K. In acid medium, the reaction rate is very sluggish to be measured kinetically. Ruthenium (III) chloride ([Ru(III)]) was found to be an efficient catalyst. The reaction rate exhibits a first-order dependence on [CAT]0 in both media. It shows a fractional-order on …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 1, 2014 · pp. 29–40 Read article
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Ceria and Modified Ceria: A Reusable Catalyst for the Green Synthesis of 2,3-diphenyl Quinoxaline at Room Temperature
Abstract: Simple, highly versatile and efficient synthesis of 2,3-diphenylquinoxalines is achieved from benzil and o-phenylene diamine using ceria and modified ceria as the catalyst. Modification of ceria is done using different weight percentage of zirconia. The catalysts are characterized by XRD, FT-IR, BET surface area, TGA and EDX-SEM. The advantages of this method are short reaction times, milder conditions and easy work-up. The product could be separated from the heterogeneous catalyst …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 3, 2014 · pp. 1–11 Read article
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Photo-Catalytic Degradation of Rhodamine-B by using UV/TiO2 and Nb2O5 Process: A Kinetic Study
Abstract: The photo-catalytic degradation of Rhodamine-B (RB) in aqueous solution with titanium dioxide (TiO2) and niobium pentaoxide (Nb2O5) as photocatalyst in slurry form has been carried out using UV-A light (254 nm). The effect of various parameters such as catalyst loading, pH and initial concentration of the RB dye on degradation have been determined. An attempt has been made to study the effect of process parameters through concentration of dye, amount …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 3, 2014 · pp. 12–24 Read article
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Inhibitors for steel implements
Abstract: Oil and gas industries use corrosion inhibitors made of active inhibitor intermediate, carboxylic acid, demulsifier and surfactant in aromatic solvent, and alcohol. High pressure and high temperature oil well flow lines are made of steel pipes. These pipes are prone to corrosion from gaseous contamination, oil quality, flow rate, developed shear stress of turbulence, pump spar techniques, etc. Carbon dioxide to carbolic acid conversion at below 100oC temperature appears to …
Published in Journal of Catalyst & Catalysis · Vol. 6, Issue 2, 2019 · pp. 1–11 Read article
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Investigation and Comparison of Different Action of Catalyst and Process Conditions in the Production of Chlorobenzene
Abstract: Overview on the investigation and comparison of different action of catalyst and process conditions reveals that the productions of chlorobenzenedoesnot occur naturally, Chlorobenzene is an aromatic compound with chemical formula C6H5Cl. This colorless, volatile, water-insoluble, flammable liquid with a penetrating smell of almonds is a common solvent which is gotten mostly from the chlorination of benzene and widely used intermediate in the manufacture of other chemicals. Production of chlorobenzene is …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 2, 2020 · pp. 1–4 Read article
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Review on Effected Factors of Type of Products
Abstract: This survey covers effect of some factors in type of products in any reaction. A catalyst speeds up a chemical reaction, without being consumed by the reaction. Catalysts that used in any reaction, as it affects the nature of the product, its quantity, purity, color, degree of stability, the physical and chemical properties, the resulting isomers, the essential and secondary resulted of each reaction, and even the reaction conditions. It …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 3, 2020 · pp. 33–40 Read article