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760 articles for “Acidic (A)”
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TiO2-ZrO2 Supported Nickel Oxide Catalysts for Hydrogenation of Levulinic Acid to -Valerolcatone
Abstract: The Titania-Zirconia (TZ) mixed oxide sample (50:50 wt.% percent) was prepared by a simple coprecipitation method and used as a support for the nickel catalyst. The various loadings of nickel content from 1 to 20 wt.% were synthesized for the production of γ-valerolactone (GVL) from levulinic acid (LA). Among all the tested samples, the 5 wt.% Ni/TZ sample exhibited the 98% conversion of LA and 96% selectivity to GVL and …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 3, 2022 · pp. 35–44 Read article
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Synthesis, Characterization and Drug Delivery Application of Poly (Acid Fuchsin) Based Triblock Copolymer
Abstract: Synthesis, characterization and its drug delivery application of Poly (acid fuchsin) (PAF) was done under inert atmosphere. The (M0/I0) was maintained at 100. In order to increase the molecular weight and processability, it was block copolymerized with ε-caprolactone (CL) and tetrahydrofuran (THF) separately. The conductivity value of PAF was found to be decreased after the chemical conjugation with poly(ε-caprolctone) (PCL) and poly(tetrahydrofuran) (PTHF) blocks. Thus obtained triblock copolymer was subjected …
Published in Journal of Catalyst & Catalysis · Vol. 3, Issue 2, 2016 · pp. 33–43 Read article
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Role of Solid Acid Catalyst in Isopropylation Reaction
Abstract: Cumene synthesis was carried out by the reaction of benzene with isopropyl alcohol in the vapour phase over rare earth metal modified 13X zeolite. Zeolite modification was done by exchanging sodium ions of the zeolite with cerium ions to vary the acidity of the catalyst in the range of 0.25‑1.36 meq/g. The synthesis was carried out over a wide range of operating conditions. The synthesis conditions were optimized by studying …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 2, 2015 · pp. 19–26 Read article
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Crosslinked Starch Polymer for Coating on Fruit/Vegetable for Preservation Derived from Waste De-Oiled Soybean Cake
Abstract: Cross-linked starch films have been prepared by reacting starch extracted from de-oiled soybean cake (waste material from oil industry) with bio-based acids citric acid and tartaric acid. The obtained films were characterized by spectroscopic, thermal and surface morphological techniques. Thermal analysis showed that thin film has good thermal stability. The micrographs obtained from scanning electron microscopy showed the film surface has smooth and uniform morphology. Biological properties like cytocompatibility, antimicrobial …
Published in Journal of Catalyst & Catalysis · Vol. 8, Issue 2, 2021 · pp. 17–29 Read article
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Direct and rapid synthesis of amides from carboxylic acids under solvent free condition using Clay based Heterogeneous recyclable catalyst
Abstract: Direct condensation of Carboxylic Acids and Amines has resulted in a highly simple and practical technique for the synthesis of amides. Fe-Al clay catalyst was used in the solvent-free, microwave-irradiated amide synthesis. Only a small amount of the catalyst was needed to produce products in very short of time with a good yield. The catalyst was easy to separate and could be recycled several times with negligible loss of catalytic …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 2, 2023 · pp. 1–9 Read article
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Eco-friendly Corrosion Inhibitors for N80 Steel in Hydrochloric Acid
Abstract: An important method of protecting metallic materials against deterioration due to acid corrosion is by the use of corrosion inhibitors. In the present investigation, corrosion inhibition study of two compounds,1-(2-hydroxyethyl)-2-ethylimidazoline(Inh I) and 1-(2-hydroxyethyl)-2-decylimidazoline (Inh II) have been performed for oil-well tubular steel (N80) in 15% HCl using weight loss, electrochemical polarization, AC impedance and SEM. The inhibition efficiencies of the inhibitors follow the sequence, Inh II > Inh I. The …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 71–83 Read article
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Molebdate as Corrosion Inhibitor for Aluminium 356 In Acidic and Saline Media
Abstract: Corrosion processes are the cause of significant losses in industry. Organic, inorganic, and mixed material inhibitors have all been used to resist corrosion for a long time, but the environmental toxicity of organic corrosion inhibitors has driven a quest for inorganic corrosion inhibitors. The effect of molybdate as a new corrosion inhibitor on the corrosion of aluminium 356 in acidic and saline conditions was investigated using electrochemical and weight loss …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 1, 2022 · pp. 39–47 Read article
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Optimization Study by Response Surface Methodology and Artificial Neural Network on the Culture Parameters of Citric Acid Bioproduction from Sweet Potato Peels
Abstract: In the cause of this research work, two steps enzymatic hydrolysis of sweet potato peel was carried out respectively. The effect of α-amylase dose, reaction time, and reaction temperature and biomass weight on glucose concentration was investigated carefully. The response surface methodology (REM) predicted the highest reducing sugar concentration at liquefaction to be 74 g/L, at the following optimized conditions; temperature of 45°C, α-amylase dose 0.7 %v/v, biomass weight 22.345 …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 1, 2022 · pp. 30–38 Read article
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Effect of Temperature on Inhibitory Efficacy of Tamarindus indica fruit extract on acid corrosion of Aluminium
Abstract: An attempt has been made to investigate the anti-corrosive propensity of ethanolic extract of Tamarindus indica fruit at elevated temperature between 303 to 343 K, so as to replace the exploitation of toxic chemicals as corrosion inhibitors. Inhibition efficiency has been observed significantly high (84.06%) at room temperature at concentration 0.45 %. The inhibition efficiency is found to increase with increasing concentration of extract and decrease with rise in temperature. …
Published in Recent Trends in Fluid Mechanics · Vol. 10, Issue 3, 2023 · pp. 42–50 Read article
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Tranexamic Acid Mouth Rinser as a Drug of Choice among Haemostatic Agent after Tooth Extraction in Patients who are on Anti-Coagulant and Anti Platelet Medical Therapy
Abstract: Oral surgery procedure became difficult to manage in patients, who are on anti-platelet and anti-coagulant medication. Risk of thromboembolism should be balance by surgeon via reducing or stopping anti platelet and anticoagulant therapy in such patients, because there are more risk of excessive post extraction bleeding if anticoagulation or anti platelet medications are prescribed at therapeutic dose during surgical procedure. Fibrin formation mechanism become impaired in such patients, as a …
Published in Research and Reviews: A Journal of Dentistry · Vol. 12, Issue 2, 2021 · pp. 33–44 Read article
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Gamma- and Electron Beam-Induced Crystalline modification in Poly (Lactic Acid): Effects of Radiation Dose and Dose Rate
Abstract: Poly(lactic acid) (PLA) is an important commercial biodegradable polyester whose properties are dictated by its molecular architecture and semicrystalline nature. The application of ionizing radiation particularly gamma rays and electron beams is extensive for sterilization and materials processing. The effect of ionizing radiation on the crystallinity of PLA is complex however, since irradiation causes concurrently chain scission, radical formation, oxidation, recombination and mobility driven structural reorganization. This work studies the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Cartridge-Based Nucleic Acid Amplification for Rapid Tuberculosis Diagnosis
Abstract: In terms of public health, tuberculosis continues to have a significant impact on people's lives. The process of determining the underlying cause of a sickness or condition in a patient is known as clinical diagnosis. It entails the use of numerous diagnostic methods, including physical examinations, laboratory testing, and imaging procedures for medical purposes. Smear microscopy, which are frequently utilized, have poor sensitivity and lengthy turnaround times, respectively. An innovative, …
Published in International Journal of Pathogens · Vol. 1, Issue 1, 2024 · pp. 43–48 Read article
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Electrochemical Evaluation of Corrosion Behavior in Industrial Alloys Under Acidic and Marine Conditions
Abstract: Corrosion represents a spontaneous physicochemical transformation in which metals revert to their more stable thermodynamic state, typically oxides, hydroxides, or sulfides, as a result of interaction with environmental elements. Rather than being a simple surface reaction, corrosion is a complex electrochemical phenomenon that significantly influences the durability, reliability, and performance of metallic structures across industrial, marine, and domestic sectors. The consequences extend beyond material degradation, contributing to substantial economic losses, …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 13, Issue 1, 2026 · pp. 24–36 Read article
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Mechanism Action of Catalysis
Abstract: Catalysis is a method for speeding up the rate of a reaction. It is of three types homogeneous, biocatalysis and heterogeneous catalysis which further involve acid base catalysis, that is based on Brønsted-Lowry concept which state that any compound that can transfer a proton to any other compound is an acid, and the compound that accepts the proton is a base and in enzymatic catalysis every enzyme is specific to …
Published in Journal of Catalyst & Catalysis · Vol. 8, Issue 3, 2021 · pp. 22–28 Read article
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Homodinuclear and Heterodinuclear Sulphocyanate Bridged Lewis Acid Complexes: An Insight into their Reactivity and Structural Flexibility
Abstract: This precpective reports the synthesis of homodinuclaer and heterodinuclear complexes of the type MM (SCN)4 and MM/ (SCN)4 (M-Co2+ , Ni, M/ , = Cd2+, Hg2+) with N.N' Bis (salicylidene) 1,2- plionylendfamine. A superficial insight has also been reported about their reactivity and structural flexibility. The complexes have been characterized on the basis of elemental analysis, conductivity measurements, magnetic susceptibility measurements, Proton magnetic resonance UV-Visible and midIR spectral studies. The …
Published in Journal of Nuclear Engineering & Technology · Vol. 11, Issue 1-2, 2021 · pp. 42–47 Read article
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Engineering Novel Blue Emissive Thiazolidinedione (TD) Poly Lactic Acid (PLA) Composite Thin Films for Bioplastic Scintillation
Abstract: In this article, we demonstrate luminescent properties of PLA blended with new 3-[2-(4-methylphenyl)-2-oxoethyl]-5-(thiophen-2-ylmethylidene)-1, 3-thiazolidine-2, 4-dione and 3-[2-(4-chlorophenyl)-2-oxoethyl]-5-(thiophen-2-ylmethylidene)-1, 3-thiazolidine-2, 4-dione (TD). This paper mainly aims at the preparation of intercalated thin films of PLA and TD. The formation of matrix-dopant composite films was confirmed by FTIR, SEM, TGA, DSC and XRD characterizations. This work really stands out from our previous work as TD has been better recognized as drug material in …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 10–23 Read article
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Phytase enzyme and its remarkable effects on chicken health
Abstract: Phytase enzyme catalyzes the hydrolysis of Phytate to mono, di, tri, tetra and penta Phosphate of Myoinositol and Inorganic Phosphate. Cereals, legumes and oilseeds are the main ingredients of animal feed. Phytic acid or phytate is the chief storage form of phosphorus in the feed obtained from these plant sources. Phytate bound important mineral, metal ions and amino acids with it, and in this way it is anti-nutritional element. Simple …
Published in Emerging Trends in Personalized Medicines · Vol. 1, Issue 2, 2024 · pp. 37–41 Read article
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Biocatalytic Process by Biodiesel Production to the help of Environment
Abstract: The synthesis of fatty acid esters using vegetable oils seems to be a crucial process that yields good diesel fuel substitutes and useful oleochemical intermediates. Biodiesel is made from fatty acid methyl esters, which are a mixture of mono-alkyl esters produced from vegetable oils including sunflower oil, soyabean oil, rapeseed oil, peanut oil, cotton seed oil, and animal fats like pig fats and lard. Biodiesel can also be made from …
Published in Journal of Catalyst & Catalysis · Vol. 8, Issue 3, 2021 · pp. 29–33 Read article
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Arsenic Induced Oxidative Stress and Its Possible Reversal by Chelation Therapy
Abstract: Arsenic (As) is a metalloid listed in group Va of the periodic chart. It exists in nature in the oxidation states +V (arsenate), +III (arsenite), 0 (arsenic) and −III (arsine). In the aqueous environment inorganic arsenic appears commonly in the oxidation states +V and +III as arsenous acid (As (III)), arsenic acid (As (V)), and their salts. Chronic and acute exposures of arsenic leads to cancer, cardiovascular disease (hypertension and …
Published in Research and Reviews: A Journal of Toxicology · Vol. 2, Issue 2, 2012 · pp. 16–37 Read article
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Synthesis and Evaluation of Novel Peroxisome Proliferator Activated Receptor-γ (PPAR-γ) Agonists for the Treatment of Diabetes
Abstract: A series of novel thiazolidinedione derivatives as peroxisome proliferator activated receptor-gamma (PPAR-gamma) agonists bearing different fatty acid esters and amides as substituents in the positions 3 and 4 of the benzylidene moiety have been designed, synthesized and tested as potential antihyperglycemic agents. The compounds containing stearic acid (A1TU, A2TU, A3TU, A2TS and A3TS) exhibited the maximum activity (64.7-70.3 % BG reduction) among all the synthesized compounds. The capric acid containing …
Published in Research and Reviews: A Journal of Toxicology · Vol. 6, Issue 2, 2016 · pp. 1–12 Read article