Author
Erdogan Alper
Other affiliations: King Fahd University of Petroleum and Minerals, TÜBİTAK Marmara Research Center, Ankara University ...read more
Bio: Erdogan Alper is an academic researcher from Hacettepe University. The author has contributed to research in topics: Reaction rate constant & Reaction mechanism. The author has an hindex of 23, co-authored 75 publications receiving 1904 citations. Previous affiliations of Erdogan Alper include King Fahd University of Petroleum and Minerals & TÜBİTAK Marmara Research Center.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the prospect to utilize carbon dioxide (CO2) as a feedstock for synthetic applications in chemical and fuel industries through carboxylation and reduction reactions is the subject of a review.
421 citations
TL;DR: In this paper, the results of Lee and Tsao (1972) were analyzed critically, i.e. oxygen absorption into glucose solutions containing platinium deposited on powdered activated carbon.
233 citations
TL;DR: In this article, the mechanism and kinetics of the reaction between aqueous solutions of CO 2 and a sterically hindered primary alkanolamine, 2-amino-2-methyl-1-propanol (AMP), were investigated at 278-298K by using a stopped flow technique.
Abstract: The mechanism and kinetics of the reaction between aqueous solutions of CO 2 and a sterically hindered primary alkanolamine, 2-amino-2-methyl-1-propanol (AMP), were investigated at 278-298K by using a stopped flow technique. Experiments were also carried out with monoethanolamine (MEA) solution, which is the sterically unhindered form of AMP. The corresponding second-order rate constants at 298K were found to be 520 and 5545 m 3 /(kmol.s) for AMP and MEA with activation energies of 41.7 and 46.7 kJ/mol, respectively. On the basis of this rate constant, the reaction was considered to be formation of carbamate which subsequently hydrolyzed
190 citations
TL;DR: In this paper, a review of solid amine-based adsorbents is presented, focusing on the adsorption mechanisms, material characteristics, and synthesis methods, which are discussed in detail.
179 citations
TL;DR: In this article, an artificial neural network model was used to predict ozone concentrations as a function of meteorological conditions and precursor concentrations, and the network was trained using data collected during a period of 60 days near an industrial area in Kuwait.
101 citations
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09 Mar 2012
TL;DR: Artificial neural networks (ANNs) constitute a class of flexible nonlinear models designed to mimic biological neural systems as mentioned in this paper, and they have been widely used in computer vision applications.
Abstract: Artificial neural networks (ANNs) constitute a class of flexible nonlinear models designed to mimic biological neural systems. In this entry, we introduce ANN using familiar econometric terminology and provide an overview of ANN modeling approach and its implementation methods. † Correspondence: Chung-Ming Kuan, Institute of Economics, Academia Sinica, 128 Academia Road, Sec. 2, Taipei 115, Taiwan; ckuan@econ.sinica.edu.tw. †† I would like to express my sincere gratitude to the editor, Professor Steven Durlauf, for his patience and constructive comments on early drafts of this entry. I also thank Shih-Hsun Hsu and Yu-Lieh Huang for very helpful suggestions. The remaining errors are all mine.
2,069 citations
TL;DR: The Computational Brain this paper provides a broad overview of neuroscience and computational theory, followed by a study of some of the most recent and sophisticated modeling work in the context of relevant neurobiological research.
1,472 citations
TL;DR: In this article, the operation of the chemical absorption process is reviewed, together with the use of absorbents, such as the ionic liquid, alkanolamines and their blended aqueous solutions.
Abstract: Global warming resulting from the emission of greenhouse gases, especially CO2, has become a widespread concern in the recent years. Though various CO2 capture technologies have been proposed, chemical absorption and adsorption are currently believed to be the most suitable ones for post-combustion power plants. The operation of the chemical absorption process is reviewed in this work, together with the use of absorbents, such as the ionic liquid, alkanolamines and their blended aqueous solutions. The major concerns for this technology, including CO2 capture efficiency, absorption rate, energy required in regeneration, and volume of absorber, are addressed. For adsorption, in addition to physical adsorbents, various mesoporous solid adsorbents impregnated with polyamines and grafted with aminosilanes are reviewed in this work. The major concerns for selection of adsorbent, including cost, adsorption rate, CO2 adsorption capacity, and thermal stability, are compared and discussed. More effective and less energy-consuming regeneration techniques for CO2-loaded adsorbents are also proposed. Future works for both absorption and adsorption are suggested.
1,315 citations
TL;DR: The design and operation issues for reactive distillation systems are considerably more complex than those involved for either conventional reactors or conventional distillation columns as discussed by the authors, and the introduction of an in situ separation function within the reaction zone leads to complex interactions between vapor-liquid equilibrium, vapor−liquid mass transfer, intra-catalyst diffusion, and chemical kinetics.
693 citations
TL;DR: In this paper, an overview is presented of the mechanisms that have been proposed in literature and the kinetic data for the various reactions are critically evaluated, along with the applicability and restrictions are discussed along with perspectives.
Abstract: Alkanolamine solutions are frequently used as solvent for the removal of acid compounds from industrial gases (Kohl and Riesenfeld, 1979). Depending on the process requirements, e.g., selective removal of H2S, CO2-bulk removal, several options for alkanolamine based treating solvents with varying compositions of the solution have been proposed. In this paper an overview is presented of the mechanisms that have been proposed in literature and the kinetic data for the various reactions are critically evaluated. Conclusions on the applicability and restrictions are discussed along with perspectives. In addition white spots in the present knowledge are indicated. The reaction between CO2 and primary/secondary amines both in aqueous and non-aqueous solutions can be described over a wide range of conditions and amine concentrations with the zwitterion-mechanism as originally proposed by Caplow (1968) and reintroduced by Danckwerts (1979). All published results, both non-aqueous and aqueous solutions, amine-prom...
631 citations