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Chemical substance - Wikipedia

Chemical substance - Wikipedia

An element is a chemical substance made up of a particular kind of atom and hence cannot be broken down or transformed by a chemical reaction into a different element, though it can be transmuted into another element through a nuclear reaction.This is because all of the atoms in a sample of an element have the same number of protons, though they may be different …

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Chemical kinetics - Wikipedia

Chemical kinetics - Wikipedia

Chemical kinetics, also known as reaction kinetics, is the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. It is to be contrasted with thermodynamics, which deals with the direction in which a …

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Chemical Engineering Journal Vol 435 Part 2 1 May 2022 ...

Chemical Engineering Journal Vol 435 Part 2 1 May 2022 ...

Dynamic Monte Carlo reactor modeling of calcium looping with sorbent purge and utilization decay. ... select article Highly effective microwave catalytic oxidative dehydrogenation of propane by COsub2/sub over V-La-doped dendritic mesoporous silica-based microwave catalysts ... A physico-chemical insight to model the kinetics of fenton-like ...

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Chemical engineering role in the use of renewable energy ...

Chemical engineering role in the use of renewable energy ...

Feb 06, 2019 There is a demand for new chemical reaction technologies and associated engineering aspects due to on-going transition in energy and chemistry associated to moving out progressively from the use of fossil fuels. Focus is given in this review on two main aspects: i) the development of alternative carbon sources and ii) the integration of renewable energy in the …

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Assessing the feasibility of chemical recycling via steam ...

Assessing the feasibility of chemical recycling via steam ...

Mar 15, 2022 Plastic waste samples have been pyrolyzed in a continuous pilot-scale pyrolysis unit as depicted in Fig. 1.The unit consists of an extruder connected to an externally heated continuous stirred-tank reactor (CSTR) as described in the recent works of (Zayoud et al., 2022) and (Kusenberg et al., 2022b).The extruder is used to melt the plastic waste pellets and to …

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Direct Nonoxidative Conversion of Methane to Ethylene ...

Direct Nonoxidative Conversion of Methane to Ethylene ...

May 09, 2014 Direct conversion of CH 4 is potentially more economical and environmentally friendly but is challenging because CH 4 exhibits high C–H bond strength (434 kJ/mol), negligible electron affinity, large ionization energy, and low polarizability ().In the pioneering work of Keller and Bhasin in the early 1980s, CH 4 was activated with the assistance of oxygen ().

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Hesham Hamad - Google Scholar

Hesham Hamad - Google Scholar

Microwave‐assisted synthesis of magnetic hydroxyapatite for removal of heavy metals from groundwater M Elkady, H Shokry, H Hamad Chemical Engineering Technology 41 (3), 553-562 , …

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Microwave-initiated catalytic deconstruction of plastic ...

Microwave-initiated catalytic deconstruction of plastic ...

Oct 12, 2020 a,b, The two-step pyrolysis and gasification process (a) and the present one-step microwave-initiated catalytic process (b) for the deconstruction of plastic waste to produce hydrogen and MWCNTs.c ...

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Technological Innovations in Photochemistry for Organic ...

Technological Innovations in Photochemistry for Organic ...

Photoinduced chemical transformations have received in recent years a tremendous amount of attention, providing a plethora of opportunities to synthetic organic chemists. However, performing a photochemical transformation can be quite a challenge because of various issues related to the delivery of photons. These challenges have barred the widespread adoption of photochemical …

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Synthesis and Manufacturing: Creating and Exploiting New ...

Synthesis and Manufacturing: Creating and Exploiting New ...

The long-term goal of the basic science in synthesis is to develop the ability to create all the substances and organized chemical systems and transformations that are possible under the limits of natural laws, not just those that occur in Nature. The importance of such an extension of Nature is clear in medicinal chemistry, for instance, but it is also part of the basic science of …

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Cookie Absent ACS Action - American Chemical Society

Cookie Absent ACS Action - American Chemical Society

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