Chemical reaction

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  • The fourth edition of Elements of Chemical Reaction Engineering is a completely revised version of the worldwide best-selling book. It combines authoritative coverage of the principles of chemical reaction engineering with an unsurpassed focus on critical thinking and creative problem solving, employing open-ended questions and stressing the Socratic method. Clear and superbly organized, it integrates text, visuals, and computer simulations to help readers solve even the most challenging problems through reasoning, rather than by memorizing equations.

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  • Chemical reaction engineering (reaction engineering or reactor engineering) is a specialty in chemical engineering or industrial chemistry dealing with chemical reactors. Frequently the term relates specifically to catalytic reaction systems where either a homogeneous or heterogeneous catalyst is present in the reactor.

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  • Chemical reaction engineering is concerned with the exploitation of chemical reactions on a commercial scale. It's goal is the successful design and operation of chemical reactors. This text emphasizes qualitative arguments, simple design methods, graphical procedures, and frequent comparison of capabilities of the major reactor types. Simple ideas are treated first, and are then extended to the more complex.

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  • This book is an introduction to the quantitative treatment of chemical reaction engineering. The level of the presentation is what we consider appropriate for a one-semester course. The text provides a balanced approach to the understanding of: (1) both homogeneous and heterogeneous reacting systems and (2) both chemical reaction engineering and chemical reactor engineering. We have emulated the teachings of Prof. Michel Boudart in numerous sections of this text.

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  • (BQ) Part 1 book "An introduction to chemical kinetics" has contents: Introduction, experimental procedures, the kinetic analysis of experimental data, theories of chemical reactions, potential energy surfaces.

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  • Ebook The language of Chemistry, Food and Biological Technology in English (ngôn ngữ tiếng anh chuyên ngành công nghệ hóa học, công nghệ thực phẩm và công nghệ sinh học) - GS.TS. Nguyễn Thị Hiền (chủ biên) có cấu trúc gồm 4 part.

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  • Chemical reactions (abiotic reactions) are “classical” chemical reactions that are not mediated by bacteria. They may include reaction processes such as precipitation, hydrolysis, complexation, elimination, substitution etc. that transform chemicals to other chemicals and potentially alter their phase/state (solid, liquid, gas, dissolved). Precipitation is the removal of ions from solution by the formation of insoluble compounds, i.e. a solid-phase precipitate. Hydrolysis is a process of chemical reaction by the addition of water.

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  • A photopolymer is a polymer that changes its properties when exposed to light, often in the ultraviolet frequency of the electromagnetic spectrum.Be bonds that link one polymer chain to another. Can be formed by chemical reactions that are initiated by radiation. Change physical properties of photopolymers.

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  • To elucidate the chemical interactions underlying the role of metallothioneins (MTs) in reducing the cytotoxicity caused by MeHg(II), we monitored in parallel by electronic absorption and CDspectroscopies the stepwise addition of MeHgCl stock solution to mammalian Zn7-MT1 and the isolated Zn4 -aMT1 and Zn3 -bMT1 fragments. The incor-poration of MeHg + into Zn7-MT and Zn3-bMT entails total displacement of Zn(II) and unfolding of the protein. However, both features are only partial for Zn4 -aMT.

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  • Glyoxal is a key compound involved in glyoxal oxidase (GLOX)-dependent production of glyoxylate, oxalate and H2O2 by lignin-degrading basidiomycetes. In this paper, we report that glyoxal was produced from a metabolite of ligninolytic fungi, linoleic acid, by manganese peroxidase (MnP)-dependent lipid peroxidation. In the absence of the parent substrate of linoleic acid, the dialdehyde was oxidized by MnP and Mn(III) chelate to start free radical reactions with emission of chemiluminescence at 700– 710 nm. ...

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  • Chapter 4 - The Study of chemical reactions. In this chapter, students will be able to: Propose mechanisms and explain the steps for simple reactions such as free-radical halogenation; draw a reaction-energy diagram, and use it to identify the factors controlling the thermodynamics and kinetics of a reaction; use the mechanism, thermodynamics, and kinetics of a reaction to predict which of several possible products is the major product; identify reactive intermediates and explain their properties.

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  • (BQ) Part 1 book "Chemistry" has contents: Chemistry - The study of change; atoms, molecules, and ions; mass relationships in chemical reactions; reactions in aqueous solutions; gases; thermochemistry; quantum theory and the electronic structure of atoms; periodic relationships among the elements, chemical bonding i - basic concepts, chemical bonding II - molecular geometry and hybridization of atomic orbitals.

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  • (BQ) Part 2 book "General chemistry - The essential concepts" has contents: Energy relationships in chemical reactions; the electronic structure of atoms; the periodic table; introduction to organic chemistry; intermolecular forces and liquids and solids; intermolecular forces and liquids and solids; chemical kinetics; chemical kinetics,... and other contents.

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  • (BQ) Part 1 book "Chemistry" has contents: Chemical foundations; atoms, molecules, and ions, stoichiometry; types of chemical reactions and solution stoichiometry; gases, thermochemistry; atomic structure and periodicity; covalent bonding - orbitals; bonding - general concepts; liquids and solids, properties of solutions.

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  • (BQ) Part 2 book "Essential chemistry atoms, molecules, and compounds" has contents: The elements, chemical reactions - making molecules, chemical bonds; common compounds, uncommon results.

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  • We seek to design reaction vessels, i.e. chemical reactors, where a particular chemical reaction (or set of reactions) is carried out. The first decision we take involves the configuration of the reactor and its mode of operation. This means we must decide what reactor type (and reactor shape) to select and whether it would be advantageous to operate in batch or continuous mode.

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  • Reactions and transformations of chemicals. Many chemicals undergo reaction or transformation in the subsurface environment. In contrast to retardation contaminants may be removed, rather than simply slowed down. Reactions of harmful chemicals to yield benign products prior to arrival at a receptor are the ideal, e.g. many toxic hydrocarbons have potential to biodegrade to simple organic acids (of low health concern and themselves potentially degradable), carbon dioxide (bicarbonate) and water. Transformation often causes a deactivation (lowering) of toxicity.

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  • The high specificity ofa-conotoxins for different neuronal nicotinic acetylcholine receptors makes them important probes for dissecting receptor subtype selectivity. New sequences continue to expand the diversity and utility of the pool of available a-conotoxins. Their identification andcharacterizationdependonasuiteoftechniques with increasing emphasis on mass spectrometry and micro-scale chromatography, which have benefited from recent advances in resolution and capability.

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  • Dehydroascorbate reductase (DHAR) reduces dehydro-ascorbate (DHA) to ascorbate with glutathione (GSH) as the electron donor. We analyzed the reactionmechanismof spinach chloroplast DHAR, which had a much higher reaction specificity for DHA than animal enzymes, using a recombinant enzyme expressed inEscherichia coli. Kinetic analysis suggested that the reaction proceeded by a bi-uni-uni-uni-ping-pong mechanism, in which binding of DHA to the free, reduced formof the enzyme was followed bybindingofGSH....

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  • 3-methyl-1-buten-3-yl-6-o--xylopyranosyl--D-glucopyranoside has been isolated from the methanolic extract of the roots of Vietnamese Paederia scanders. Its structure was elucidated by the combination of 2D NMR, IR and high resolution FAB-MS spectroscopy and chemical reaction, such as acetylation.

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