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191 articles for “chemical reactions”
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Performance Evaluation of Modified Concrete Incorporating Fly Ash, Silica Fume, Rice Husk Ash, and Calcium Nitrate
Abstract: The growing demand for sustainable and high-performance concrete has led to the incorporation of supplementary cementitious materials (SCMs) and chemical admixtures to enhance mechanical and durability properties. This study investigates the effect of 15% fly ash, 10% silica fume, 10% rice husk ash, and 3% calcium nitrate as a partial replacement for cement in M25 and M30 grade concrete. Experimental results demonstrate that the modified concrete exhibited an increase in …
Published in Journal of Structural Engineering and Management · Vol. 12, Issue 2, 2025 · pp. 35–39 Read article
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Border Security Robot Vehicle with YOLO V4
Abstract: The objective of this project is to design and manufacture a prototype of Bordersecurity surveillance UGV with YOLO V4 algorithm. This versatile robot vehicle use a remote camera method to track active persons, burning, hazardous chemicals, metals, and obstructions in remote regions and transmit data to a central location. To offer instant reaction from sensors, the suggested system employs YOLOV4 and machine intelligence. While the robot is functioning, thevehicle is …
Published in Journal of Mechatronics and Automation · Vol. 9, Issue 3, 2022 · pp. 27–36 Read article
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Chemical precipitation approach to the removal of heavy metals from wastewater for discharge into sanitary sewerage
Abstract: NaOH, Ca(OH)2 and Na2CO3 were used as the precipitants in this study. The reaction time was set at 45 min, temperature at 50º C, pH at 9 for the hydroxides and 10 for the carbonate. Heavy metal ions precipitated includes; Pb2+, Cu2+, Mn2+, Zn2+ and Fe3+. NaOH exhibited highest precipitation for Cu2+ (99.2 %) and least for Zn2+ (75.2 %), Ca(OH)2 exhibited highest precipitation for Cu2+ (100 %) and least …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 1, 2019 · pp. 1–5 Read article
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Looking into new ideas in green chemistry
Abstract: Green chemistry has become a revolutionary way to change chemical processes such that they have less of an effect on the environment while still being efficient and cost-effective. This article looks at new developments in green chemistry that go beyond small changes and offer completely new ways to build chemicals that are good for the environment. There is a lot of focus on innovative catalytic systems, sustainable feedstocks, reaction pathways …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 17, Issue 1, 2026 · pp. 10–18 Read article
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From Quantum Chemistry to Bioprocess Intensification: Advanced Computational Modeling and Enzyme-Based Catalytic Platforms for Green Chemical Transformations
Abstract: Green chemistry requires the development of sustainable catalytic systems that minimize waste generation, reduce energy consumption, and improve process efficiency. Computational chemistry and biocatalysis have emerged as complementary approaches for environmentally responsible chemical manufacturing. Computational techniques such as quantum chemistry, density functional theory (DFT), molecular dynamics, and machine learning provide mechanistic insights into catalytic reactions and support the rational design of efficient catalysts. These approaches enable the prediction of reaction …
Published in Journal of Catalyst & Catalysis · Vol. 13, Issue 2, 2026 · pp. 45–52 Read article
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Polymer Composite-Assisted Crystal Engineering for Drug Synthesis and Property Control through Solid Solutions and Co-Crystals
Abstract: The long-standing problem of low aqueous solubility, which affects about 90% of all new drug molecules under development, requires an immediate need for alternative approaches apart from the usual practice of crystallization. Polymer-composite-assisted crystal engineering is a novel technique for overcoming the aforementioned problem. This involves the addition of accepted pharmaceutical polymers, such as HPMC, PVP, PEG, and Eudragit copolymers in a single process, which can promote nucleation, stabilize the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 172–189 Read article
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Tung Oil Based Polyurethanes: A Short Review
Abstract: Polyurethane (PU) formulated from natural polyols obtained from Tung oil (TO) have improved hydroxylation of the double bonds in the fatty acid chains of the unsaturated oil followed by the alcoholysis of the hydroxylated oil. The comparative chemical analysis between unmodified and modified TO suggested that the hydroxyl content increased significantly after the hydroxylation and alcoholysis reactions. Incorporated wood flour (WF), microcrystalline cellulose (MCC) or rice husk ash (RHA) as …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 43–47 Read article
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Review and Effect of Acid Treatment on Indian Montmorillonite and Kaolin Clay
Abstract: Clay being the available resource throughout the world and being rich in alumino-silicate compounds is of great importance. This review mainly focuses on the montmorillonite and kaolin clay and includes acid treatment, clay based catalyst and zeolite from montmorillonite and kaolin clay. In this review, effect of acid treatment, Si/Al ratio and conversion of catalyst in reaction is discussed. Indian clay is treated with sulphuric acid and hydrochloric acid, respectively …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 3, 2020 · pp. 8–19 Read article
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Efficiency Improvement of Permanent Magnet Rotating Electrical Machine (PMREM) with Permanent Magnet Material Selection
Abstract: There are many Permanent Magnet Machines available in the market with the different type of PM material. The rare earth permanent magnet material changes the whole scenario of the market. In comparison with SmCo and AlNiCO magnets, NdFeB magnets have low corrosion resistance. Their chemical reactivity is similar to that of alkaline earth metals like magnesium. Under normal conditions the NdFeB reacts slowly. The reaction is faster at higher temperatures …
Published in Journal of Instrumentation Technology & Innovations · Vol. 4, Issue 1, 2014 · pp. 1–6 Read article
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Corrosion inhibitors of steel applicable by green but toxics
Abstract: Inhibitors in detergent and alkali based chemicals are used in various media for steels. Toxicity has induced pharmaceutical compounds as better inhibitors to restrict pollutant gases emissions after reaction with alkaline inhibitors. Green in origin inhibitors are toxin free to use with detergents for inhibition of both pollutant gases and corrosion of processing machineries made of metals. Eco-friendly inhibitors have appeared for steel corrosion being embedded in concrete i.e. alkaline …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 2, 2019 · pp. 38–47 Read article
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Nano- Catalysts for Enhanced Performance in Hydrogenation Reactions
Abstract: The development of nano-catalysts has revolutionized the field of hydrogenation reactions, offering unparalleled efficiency and selectivity. This study explores the synthesis, characterization, and application of novel nano-catalysts designed to enhance hydrogenation processes. By leveraging advanced materials science techniques, we have engineered catalysts with precisely controlled particle sizes, shapes, and surface properties. These nano-catalysts exhibit remarkable activity and stability, attributed to their high surface area-to-volume ratios and unique electronic structures. Our …
Published in Journal of Catalyst & Catalysis · Vol. 11, Issue 1, 2024 · pp. 22–27 Read article
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Use of Modified and Unmodified Calcium Oxide from Bio-resources as Heterogeneous Transesterification Catalyst for Biodiesel Synthesis: A Review
Abstract: Metal oxides have been widely used to catalyze various types of organic reaction, whatever supported or nonsupport metal oxide catalysts (supported with metal, mixed oxides and acids such as sulphoric acid). Calcium oxide is one of the most metal oxides used as heterogeneous catalysts; due to its favorable properties such as high activity, availability, low cost, and easily separated, as well as environmental friendly. Calcium oxide whether laboratory, prepared from …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 3, 2022 · pp. 30–34 Read article
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Synthesis and characterization of mesoporous silica supported Pt catalysts for Decalin dehydrogenation
Abstract: Hydrogen, potentially very attractive energy source as its combustion forms only water in addition to energy. Hydrogen is the cleanest source of fuel. Decalin consists of considerable high hydrogen contents of 7.3 wt% and 64.8 kg H2 /m3 is an excellent mobile storage source for hydrogen. In this work, SBA-15 and carbon modified SBA-15 supported 1wt% Pt catalysts were synthesized and characterized for vapour phase dehydrogenation of decalin. About 154 …
Published in Journal of Catalyst & Catalysis · Vol. 5, Issue 3, 2018 · pp. 12–21 Read article
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The Physio-chemical Analysis of waste cooking oil and butanol blends with diesel
Abstract: With the growing concerns of environmental condition and energy resources, the alternate fuel like biodiesel is the best promising fuel. In this paper the physico-chemical properties has been determined of two different bio-diesel blends (1)Waste cooking oil(WCO) with diesel (2) butanol with diesel. The waste cooking oils are subjected to a chemical process called transesterification to produce the WCO biodiesel and then blended with diesel. The steps required for production …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 62–66 Read article
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Challenges and Opportunities in the Catalytic Conversion of CO₂ to Value-Added Chemicals
Abstract: The catalytic conversion of CO2 into value-added chemicals presents a promising strategy for tackling the dual challenges of greenhouse gas emissions and the sustainable production of chemicals. This process transforms CO2, a major contributor to climate change, into useful products such as methanol, formic acid, and hydrocarbons. Such an approach not only helps mitigate CO2 levels in the atmosphere but also generates economically valuable products, thereby supporting both environmental and …
Published in Journal of Catalyst & Catalysis · Vol. 11, Issue 2, 2024 · pp. 30–35 Read article
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Revolutionizing Anti-Allergy Medications: A Comprehensive Review of Target Discovery and Medicinal Chemistry
Abstract: Above the past few decades, the prevalence of allergy illnesses has been steadily rising, impacting 20–30% of the world's population. Multiple targets are involved in allergic reactions to infections of the skin, digestive tract, and respiratory system. Developing medications with a good curative efficacy and minimal side effects while utilizing novel multi-targets and processes in accordance with the clinical features of various allergic populations and allergens is the primary challenge …
Published in International Journal of Advance in Molecular Engineering · Vol. 1, Issue 1, 2023 · pp. 49–54 Read article
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In vitro Antiviral Chemical Treatment to BBTV-Infected Banana Cultures for Production of Virus-Free Plants
Abstract: Obtaining healthy plants from infected germplasm banana stocks is a major problem. Banana bunchy top virus (BBTV) is the most destructive pathogen for the banana crop. Production of virus-free plants is crucial for cultivation, germplasm conservation and their exchanges. In vitro shoot meristem culture is the most common method for producing disease-free planting material. However, BBTV can multiply with in vitro cultures too. Therefore, for eliminating BBTV, the shoot-tip culture …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 9, Issue 3, 2019 · pp. 28–33 Read article
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Use of Molybdenum Doped Titanium Dioxide as Nanophotocatalyst in the Degradation of Methylene Blue under Visible Light
Abstract: The Earth is facing environmental pollution in its different facets, out of which water pollution is a major problem. Photocatalysis, which is an important part of advanced oxidation processes, is such a technology, which will be beneficial for waste water treatment due to its green chemical nature. In the present work, the photocatalytic degradation of methylene blue (MB) was carried in the presence of molybdenum doped titania nanophotocatalyst and progress …
Published in Journal of Water Pollution & Purification Research · Vol. 2, Issue 2, 2015 · pp. 23–28 Read article
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Plastic:A Red Signal For Our Planet
Abstract: Plastic is becoming a menace for our planet and all the living creatures that are living here. The use of plastics for different purposes like packaging, vehicle parts, baby toys, toothbrushes, carry bags, etc. is increasing day by day as the greed of human beings is increasing. Plastic items can save our money as being the most durable and cheap but the non-biodegradable nature and release of harmful chemicals make …
Published in Research & Reviews : Journal of Ecology · Vol. 10, Issue 1, 2021 · pp. 23–28 Read article
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Review on: Heterogeneous Solid Base Catalyst Production from Waste Animal Bone as Transesterification of Jatropha Oil
Abstract: Biodiesel is produce mainly by transesterification, reacting vegetable oils or animal fats with monohydric alcohol in presence of a catalyst. The transesterification reaction is affected by various parameters. One of this parameter is catalyst type. Generally, catalysts used in transesterification reaction can be divided into three categories: homogenous, heterogeneous and enzymes. Heterogeneous catalysts offer numerous advantages over homogeneous catalysts as it can easily be separated from reaction mixture and can …
Published in Journal of Catalyst & Catalysis · Vol. 7, Issue 1, 2020 · pp. 13–23 Read article