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Journal of Food Process Engineering

Numerical modeling of granular flow in star valve type cryogenic precooler

Published: 17 January 2020

Author(s): Bhupendra M Ghodki, Krishna Bahadur Chhetri, Tridib Kumar Goswami

Abstract Cryogenic precooler/precooler is the essential component of a cryogenic grinding system that removes the desired amount of heat from a sample with the aid of a cryogen such that brittle type of failure occurs during grinding. Nevertheless, the understanding of particle dynamics, heat transfer phenomena, and optimal cryo‐grinding condition are obligatory to lower the operational cost and scaling up the findings. Therefore, the present study aims to model three‐dimensional dynamic flow...

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Surface and Interface Analysis

Tribological behaviors of DLC films in sulfuric acid and sodium hydroxide solutions

Published: 17 January 2020

Author(s): Wensheng Li, Dongqing He, Wei Ren, Liping Wang, Lunling Shang, Guangan Zhang

Tribological behaviors of three typical kinds of diamond‐like carbon (DLC) films (a‐C, a‐C:Cr, and a‐C:H) in sulfuric acid and sodium hydroxide solutions were investigated. The a‐C film showed the lowest stable coefficients of friction (COF) in both sulfuric acid and sodium hydroxide solutions but the worst wear resistance in sulfuric acid solution. The a‐C:H film showed the highest COF in sulfuric acid solution and the best wear resistance in both sulfuric acid and sodium hydroxide solutions....

thumbnail image: Surface and Interface Analysis

Luminescence

Luminescence properties of the Ln–EDTA complexes covalently linked to the chitosan biopolymers containing β‐diketonate as antenna ligands

Published: 17 January 2020

Author(s): Israel F. Costa, Gilvan P. Pires, José Geraldo P. Espínola, Hermi F. Brito, Maria Claudia F.C. Felinto, Wagner M. Faustino, Ercules E.S. Teotonio

Abstract This paper reports on the preparation, characterization, and photoluminescence properties of novel hybrid materials, in which the EDTA–Ln–L complexes (where L: H2O, acac, bzac, dbm, and tta ligands, and Ln: Eu, Gd, and Tb) were covalently linked to the precursor medium molecular weight chitosan surface (CS) matrices or on the chitosan surfaces previously crosslinked with epichlorohydrin (CSech). The emission spectra of these materials were characterized by intraconfigurational‐4fN...

thumbnail image: Luminescence

Phytochemical Analysis

Metabolic differentiation and quantification of gymnemic acid in Gymnema sylvestre (Retz.) R.Br. ex Sm. leaf extract and its fermented products

Published: 17 January 2020

Author(s): Jalaluddin Khan, Sunita Sheoran, Washim Khan, Bibhu Prasad Panda

Gymnemagenin is an active aglyconemetabolite of gymnemic acid isolated from Gymnema sylvestre leaveextract which possesses anti‐diabetic potential. Biotransformation of G.sylvestre leaves extract was carried out with Lactobacilluscasei, Lactobacillus rhamnosus, and Bifidobacterium bifidum andtheir mix co‐culture. Chromatographicanalysis showed that a maximum increase in (95.5%) gymnemagenin in G.sylvestre extract fermented with B. bifidum. Metabolicfingerprint by mass spectroscopy shows the...

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Journal of Physical Organic Chemistry

Density functional theory study on the degradation of fuel cell anion exchange membranes via removal of vinylbenzyl quaternary ammonium head group

Published: 16 January 2020

Author(s): Richard Espiritu, John Lester Tan, Len Herald Lim, Susan Arco

Abstract The alkaline stability of different tethered amine functional groups of fuel cell anion exchange membranes (AEMs), namely, trimethyl amine (TMA), 1‐azabicyclo[2.2.2]octane (ABCO), 1,4‐diazabicyclo[2.2.2]octane (DABCO), and N‐methylpiperidine (NMP), is investigated using density functional theory (DFT). Among the amine functional groups investigated, ABCO emerged as the most stable exhibiting the highest energy of barrier (EOB) of 33.5 kcal/mol, while DABCO has the lowest EOB of 30.0...

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Advanced Materials

Chemically Tailored Multifunctional Asymmetric Isoporous Triblock Terpolymer Membranes for Selective Transport

Published: 16 January 2020

Author(s): Zhenzhen Zhang, Md. Mushfequr Rahman, Clarissa Abetz, Anke‐Lisa Höhme, Evgeni Sperling, Volker Abetz

Abstract Membrane‐based separation of organic molecules with 1–2 nm lateral dimensions is a demanding but rather underdeveloped technology. The major challenge is to fabricate membranes having distinct nanochannels with desired functionality. Here, a bottom‐up strategy to produce such a membrane using a tailor‐made triblock terpolymer featuring miscible end blocks with two different functional groups is demonstrated. A scalable multifunctional integral asymmetric isoporous membrane is...

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Advanced Materials

Highly Thermoconductive, Thermostable, and Super‐Flexible Film by Engineering 1D Rigid Rod‐Like Aramid Nanofiber/2D Boron Nitride Nanosheets

Published: 16 January 2020

Author(s): Kai Wu, Jiemin Wang, Dingyao Liu, Chuxin Lei, Dan Liu, Weiwei Lei, Qiang Fu

Abstract Polymer‐based thermal management materials have many irreplaceable advantages not found in metals or ceramics, such as easy processing, low density, and excellent flexibility. However, their limited thermal conductivity and unsatisfactory resistance to elevated temperatures (100 MPa, 450 °C) enable effective thermal management for microelectrodes operating at temperatures beyond 200 °C.

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Advanced Materials

Ultrahigh Ionic Exclusion through Carbon Nanomembranes

Published: 16 January 2020

Author(s): Yang Yang, Roland Hillmann, Yubo Qi, Riko Korzetz, Niklas Biere, Daniel Emmrich, Michael Westphal, Björn Büker, Andreas Hütten, André Beyer, Dario Anselmetti, Armin Gölzhäuser

Abstract The collective “single‐file” motion of water molecules through natural and artificial nanoconduits inspires the development of high‐performance membranes for water separation. However, a material that contains a large number of pores combining rapid water flow with superior ion rejection is still highly desirable. Here, a 1.2 nm thick carbon nanomembrane (CNM) made from cross‐linking of terphenylthiol (TPT) self‐assembled monolayers is reported to possess these properties. Utilizing...

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Israel Journal of Chemistry

The Effect of Surface Roughness and Composition on Wetting and Corrosion of Al−Si Alloys

Published: 16 January 2020

Author(s): Swaroop K Behera, Shvetashva Suri, Nathan P. Salowitz, Michael Nosonovsky, Pradeep K. Rohatgi

Abstract This paper presents results of wetting and corrosion of cast Al−Si alloys with composition varying from 7–50 wt% Si in contact with water. The dependency of the wetting angle and corrosion properties on the alloy composition, surface roughness, size of water droplets, and microstructure were studied. An increase in the Silicon content reduced the water contact angle (WCA) while an increase in the roughness and/or droplet size increased the WCA. No systematic variation in corrosion was...

thumbnail image: Israel Journal of Chemistry

Advanced Synthesis & Catalysis

N‐Heterocyclic Carbene Catalyzed [3+2] Cycloaddition of Enals with β,γ ‐Unsaturated α ‐Ketimino Esters for the Synthesis of Multisubstituted Cyclopentanone

Published: 16 January 2020

Author(s): Xiao‐Qian Shi, Meng‐Die Dong, Xiao‐Yong Duan, Teng‐Liang Cao, Jing Qi

Abstract A convenient strategy of N‐heterocyclic carbene catalyzed [3+2] cycloaddition of enals with β,γ‐unsaturated α‐ketimino esters is developed. This effective protocol features mild reaction conditions and broad substrate scope, which enables the rapid assembly of various benzoxazinone derived cyclopentanone scaffolds in good to high yields with excellent diastereoselectivities.

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Most-accessed articles from each ChemPubSoc Europe, ACES, and GDCh journal

December 2019

 


Duanyang Kong, Patrick J. Moon, Odey Bsharat, Rylan J. Lundgren
Direct Catalytic Decarboxylative Amination of Aryl Acetic Acids [Research Article]
Angew. Chem. Int. Ed. 2020, vol. 59, no. 3, p. 1313

Bing Liu, Lihui He, Liping Wang, Tao Li, Changcheng Li, Huayi Liu, Yunzi Luo, Rui Bao
Protein Crystallography and Site-Direct Mutagenesis Analysis of the Poly(ethylene terephthalate) Hydrolase PETase from Ideonella sakaiensis [Communication]
ChemBioChem 2018, vol. 19, no. 14, p. 1471

Isabela C. Man, Hai-Yan Su, Federico Calle-Vallejo, Heine A. Hansen, José I. Martínez, Nilay G. Inoglu, John Kitchin, Thomas F. Jaramillo, Jens K. Nørskov, Jan Rossmeisl
Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces [Full Paper]
ChemCatChem 2011, vol. 3, no. 7, p. 1159

Wolfgang Pfeiffer, Van Than Nguyen, Jan Neumann, Dirk Awe, Jens Tränckner
Operation and Control of a Full-Scale Biogas Plant Treating Wastewater from the Cleaning of Car Tanks [Research Article]
Chem. Eng. Technol. 2020, vol. 43, no. 1, p. 84

Dieter Wöhrle
Kunststoffe [Artikel]
Chem. Unserer Zeit 2019, vol. 53, no. 1, p. 50

Luling Wu, Xue Tian, Hai-Hao Han, Jie Wang, Robin R. Groleau, Paramabhorn Tosuwan, Boontana Wannalerse, Adam C. Sedgwick, Steven D. Bull, Xiao-Peng He, Tony D. James
A Simple Near-Infrared Fluorescent Probe for the Detection of Peroxynitrite [Communication]
ChemistryOpen 2019, vol. 8, no. 12, p. 1407

Daewoo Han, Andrew J. Steckl
Coaxial Electrospinning Formation of Complex Polymer Fibers and their Applications [Review]
ChemPlusChem 2019, vol. 84, no. 10, p. 1453

Miaofang Chi, Harry M. Meyer, Zili Wu, Liangbo Liang, Peter V. Bonnesen, Dale K. Hensley, Rui Peng, Yang Song, Cheng Ma, Bobby G. Sumpter, Adam J. Rondinone
High-Selectivity Electrochemical Conversion of CO2 to Ethanol using a Copper Nanoparticle/N-Doped Graphene Electrode [Full Paper]
ChemistrySelect 2016, vol. 1, no. 19, p. 6055

Ekkehard Schwab, Sebastian Schiebahn, Georg Schaub, Martin Reuter, Konstantin Räuchle, Ludolf Plass, Marcell Peuckert, Anja Metzelthin, Falko Mahlendorf, Wolfram Koch, Renate Hoer, Angelika Heinzel, Sigmar Bräuninger, Martin Bertau, Christian Beilmann, Florian Ausfelder, Ferdi Schüth, Detlef Stolten, Gisa Teßmer, Kurt Wagemann, Karl-Friedrich Ziegahn
Energiespeicherung als Element einer sicheren Energieversorgung [Übersichtsbeitrag]
Chem. Ing. Tech. 2015, vol. 87, no. 1-2, p. 17

Abas Mohsenzadeh, Akram Zamani, Mohammad J. Taherzadeh
Bioethylene Production from Ethanol: A Review and Techno-economical Evaluation [Review]
ChemBioEng Rev. 2017, vol. 4, no. 2, p. 75

Lucia Mazzapioda, Carmelo Lo Vecchio, Annalisa Paolone, Antonino Salvatore Aricò, Vincenzo Baglio, Maria Assunta Navarra
Enhancing Oxygen Reduction Reaction Catalytic Activity Using a Sub-Stoichiometric CaTiO3−δ Additive [Cover Profile]
ChemElectrochem 2019, vol. 6, no. 24, p. 5910

S. Ghosh, B. Pradhan
Lead-Free Metal Halide Perovskite Nanocrystals: Challenges, Applications, and Future Aspects [Minireview]
ChemNanoMat 2019, vol. 5, no. 3, p. 300

Frank Tabellion, Christoph Peters, Uwe Fischbeck, Manfred Regitz, Fritz Preuss
Imidovanadium(V) Complexes as Reaction Partners for Kinetically Stabilized Phosphaalkynes: Synthesis of 1,2,4‐Azaphosphavanada(V)‐cyclobutenes, 1,3,5‐Triphosphabenzenes, and 1H‐1,2,4‐Azadiphospholes [Organophosphorus Compounds, Part 148 : Full Paper]
Chem. Eur. J. 2000, vol. 6, no. 24, p. 4558

Byunghyuck Jung, Jungkyu K. Lee, Jungnam Kim, Eunhye K. Kang, Sang Yeong Han, Hee-Yoon Lee, Insung S. Choi
Synthetic Strategies for (−)-Cannabidiol and Its Structural Analogs [Minireview]
Chem. Asian J. 2019, vol. 14, no. 21, p. 3749

Arun K. Sinha, Danish Equbal
Thiol−Ene Reaction: Synthetic Aspects and Mechanistic Studies of an Anti-Markovnikov-Selective Hydrothiolation of Olefins [Focus Review]
Asian J. Org. Chem. 2019, vol. 8, no. 1, p. 32

Avick Kumar Ghosh, Indranil Samanta, Anushree Mondal, Wenshe Ray Liu
Covalent Inhibition in Drug Discovery [Review]
ChemMedChem 2019, vol. 14, no. 9, p. 889

Andrea Álvarez, Marta Borges, Juan José Corral-Pérez, Joan Giner Olcina, Lingjun Hu, Damien Cornu, Rui Huang, Dragos Stoian, Atsushi Urakawa
CO2 Activation over Catalytic Surfaces [Concept]
ChemPhysChem 2017, vol. 18, no. 22, p. 3135

Matthias Freitag, Nadja Möller, Andreas Rühling, Cristian A. Strassert, Bart Jan Ravoo, Frank Glorius
Photocatalysis in the Dark: Near-Infrared Light Driven Photoredox Catalysis by an Upconversion Nanoparticle/Photocatalyst System [Communication]
ChemPhotoChem 2019, vol. 3, no. 1, p. 24

Mingshuai Ma, Lin Dai, Chuanling Si, Lanfeng Hui, Zhong Liu, Yonghao Ni
Front Cover: A Facile Preparation of Super Long-Term Stable Lignin Nanoparticles from Black Liquor (ChemSusChem 24/2019) [Cover Picture]
ChemSusChem 2019, vol. 12, no. 24, p. 5213

Stephen A. Matlin, Goverdhan Mehta, Henning Hopf, Alain Krief
The Periodic Table of the Chemical Elements and Sustainable Development [Essay]
Eur. J. Inorg. Chem. 2019, p. 4170

Luca Capaldo, Davide Ravelli
Hydrogen Atom Transfer (HAT): A Versatile Strategy for Substrate Activation in Photocatalyzed Organic Synthesis [Microreview]
Eur. J. Org. Chem. 2017, p. 2056

Cover Picture Lebensmittelchemie 6/2019 [Cover Picture]
Lebensmittelchemie 2019, vol. 73, no. 6

Elementerätsel 1 [Wissenschaft + Forschung]
Nachr. Chem. 2019, vol. 67, no. 12, p. 40

Schüleraufgabe: CHEMKON 2/2017 [Schüleraufgabe]
CHEMKON 2017, vol. 24, no. 2, p. 91

Zheng Ma, Douglas R. MacFarlane, Mega Kar
Mg Cathode Materials and Electrolytes for Rechargeable Mg Batteries: A Review [Minireview]
Batteries & Supercaps 2019, vol. 2, no. 2, p. 115

Catharina Goedecke
Why Does Iodine Turn Starch Blue?
ChemViews Magazine 2016

Most cited articles from each ChemPubSoc Europe, ACES, and GDCh journal


2017

 


Eric J. Popczun, Carlos G. Read, Christopher W. Roske, Nathan S. Lewis, Raymond E. Schaak
Highly Active Electrocatalysis of the Hydrogen Evolution Reaction by Cobalt Phosphide Nanoparticles
Angew. Chem. Int. Ed. 2014, vol. 53, pp. 5427–5430

Philippe Compain, Anne Bodlenner
The Multivalent Effect in Glycosidase Inhibition: A New, Rapidly Emerging Topic in Glycoscience [Minireview]
ChemBioChem 2014, vol. 15, pp. 1239–1251

Zhi-Yuan Gu, Jihye Park, Aaron Raiff, Zhangwen Wei, Hong-Cai Zhou
Metal–Organic Frameworks as Biomimetic Catalysts [Minireview]
ChemCatChem 2014, vol. 6, pp. 67–75

Anthony J. Arduengo, Roland Krafczyk
Auf der Suche nach Stabilen Carbenen [Organische Chemie]
Chem. Unserer Zeit 1998, vol. 32, pp. 6–14

Félix Sancenón, Lluís Pascual, Mar Oroval, Elena Aznar, Ramón Martínez-Máñez
Gated Silica Mesoporous Materials in Sensing Applications [Review]
ChemistryOpen 2015, vol. 4, pp. 418–437

Jun Pu, Tingting Wang, Haiyang Wang, Yao Tong, Chenchen Lu, Wei Kong, Zhenghua Wang
Direct Growth of NiCo2S4 Nanotube Arrays on Nickel Foam as High-Performance Binder-Free Electrodes for Supercapacitors [Full Paper]
ChemPlusChem 2014, vol. 79, pp. 577–583

Francisco Trespalacios, Ignacio E. Grossmann
Review of Mixed-Integer Nonlinear and Generalized Disjunctive Programming Methods [Review]
Chemie Ingenieur Technik 2014, vol. 86, pp. 991–1012

Xiaosi Zhou, Yu-Guo Guo
Highly Disordered Carbon as a Superior Anode Material for Room-Temperature Sodium-Ion Batteries [Communication]
ChemElectroChem 2014, vol. 1, pp. 83–86

Chuanxi Wang, Zhenzhu Xu, Chi Zhang
Polyethyleneimine-Functionalized Fluorescent Carbon Dots: Water Stability, pH Sensing, and Cellular Imaging [Full Paper]
ChemNanoMat 2015, vol. 1, pp. 122–127

Matthew N. Hopkinson, Basudev Sahoo, Jun-Long Li, Frank Glorius
Dual Catalysis Sees the Light: Combining Photoredox with Organo-, Acid, and Transition-Metal Catalysis [Minireview]
Chemistry – A European Journal 2014, vol. 20, pp. 3874–3886

Yinuo Wu, Jun Wang, Fei Mao, Fuk Yee Kwong
Palladium-Catalyzed Cross-Dehydrogenative Functionalization of C(sp2)–H Bonds [Focus Review]
Chemistry – An Asian Journal 2014, vol. 9, pp. 26–47

Derong Cao, Herbert Meier
Pillar[n]arenes—a Novel, Highly Promising Class of Macrocyclic Host Molecules [Focus Review]
Asian Journal of Organic Chemistry 2014, vol. 3, pp. 244–262

Daniel Gallenkamp, Kathy A. Gelato, Bernard Haendler, Hilmar Weinmann
Bromodomains and Their Pharmacological Inhibitors [Review]
ChemMedChem 2014, vol. 9, pp. 438–464

Antonio Bauzá, Tiddo J. Mooibroek, Antonio Frontera
The Bright Future of Unconventional σ/π-Hole Interactions [Review]
ChemPhysChem 2015, vol. 16, pp. 2496–2517

Ksenia S. Egorova, Valentine P. Ananikov
Toxicity of Ionic Liquids: Eco(cyto)activity as Complicated, but Unavoidable Parameter for Task-Specific Optimization [Review]
ChemSusChem 2014, vol. 7, pp. 336–360

Shunichi Fukuzumi, Dachao Hong
Homogeneous versus Heterogeneous Catalysts in Water Oxidation [Microreview]
Eur. J. Inorg. Chem. 2014, pp. 645–659

Fabien Toulgoat, Sébastien Alazet, Thierry Billard
Direct Trifluoromethylthiolation Reactions: The “Renaissance” of an Old Concept [Microreview]
Eur. J. Org. Chem. 2014, pp. 2415–2428

David Schweinfurth, Naina Deibel, Fritz Weisser, Biprajit Sarkar
Mit Klick zu neuen Liganden [Magazin]
Nachr. Chem. 2011, vol. 59, pp. 937–941

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A product of ChemPubSoc Europe (16 European Chemical Societies)published by Wiley-VCH