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You searched for: Journal name Industrial & Engineering Chemistry Research Remove constraint Journal name: Industrial & Engineering Chemistry Research Publication year rev 7986-2014 Remove constraint Publication year rev: 7986-2014 Source 2014 v.53 no.1 Remove constraint Source: 2014 v.53 no.1
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1. Axial Variation of Wetting Efficiency and Liquid–Solid Mass Transfer in Long Trickle Bed Columns

Author:
du Toit Elizabeth L.; Joubert Rita; Saayman Francois; Nicol Willie
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 494-497
ISSN:
1520-5045
Subject:
electrochemistry; engineering; hydrodynamics; liquids; mass transfer
Abstract:
... Wetting efficiency and the solid liquid mass transfer coefficient was measured separately and simultaneously using the electrochemical cell technique while varying the superficial liquid velocity and hydrodynamic state of a column by using different prewetting procedures. The wetting efficiency in columns with an aspect ratio (distance from distributor divided by column diameter) of up to 33, decr ...
DOI:
10.1021/ie402286v

2. Boundary Condition Effects on Laminar Natural Convection of Power-Law Fluids in a Square Enclosure Heated from below with Differentially Heated Horizontal Walls

Author:
Turan Osman; Fotso-Choupe Frank; Lai Jiawei; Poole Robert J.; Chakraborty Nilanjan
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 456-473
ISSN:
1520-5045
Subject:
chemistry; convection; engineering; temperature
Abstract:
... Two-dimensional steady-state laminar natural convection of power-law fluids in square enclosures with differentially heated horizontal walls (heated from below) subjected to constant wall temperature (CWT) and constant wall heat flux (CHWF) boundary conditions has been analyzed in detail based on computational simulations and a detailed scaling analysis. The effects of power-law exponent n ranging ...
DOI:
10.1021/ie4023447

3. Catalytic Oxidation of 2,7-Dihydroxynaphthalene

Author:
Bilici Ali; Doğan Fatih; Kaya İsmet
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 104-109
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; catalysts; electrochemistry; engineering; fluorescence; molecular weight; nuclear magnetic resonance spectroscopy; oxidation; polymerization; polymers; ultraviolet-visible spectroscopy
Abstract:
... Two polymer–metal complexes were used for catalytic oxidative polymerization of 2,7-dihydroxynaphthalene (DHN) with the aim of exploiting new and potent catalysts. The structure of the resulting poly(2,7-dihydroxynaphthalene) (PDHN) was confirmed by various spectral techniques: UV–vis, FT-IR, ¹H NMR, ¹³C NMR, ¹H–¹H COSY, and ¹H–¹³C HSQC. The 3 and 6 positions of the DHN ring were suggested as main ...
DOI:
10.1021/ie401735j

4. Cerium Oxide Coating of Titanium Dioxide Pigment to Decrease Its Photocatalytic Activity

Author:
Gao Han; Qiao Bing; Wang Ting-Jie; Wang Dezheng; Jin Yong
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 189-197
ISSN:
1520-5045
Subject:
aluminum oxide; ceric oxide; cerium; coatings; electrons; engineering; photocatalysis; pigments; silica; silicon; titanium dioxide; ultraviolet radiation
Abstract:
... The use of cerium oxide coating of titanium dioxide pigments to decrease photocatalytic activity was studied. A large decrease in the photocatalytic activity of titanium dioxide particles coated with cerium oxide was obtained even with a tiny coating amount of 0.2 wt %, and these particles were more stable than those with the conventional 2.0 wt % film coating of silicon dioxide or 1.5 wt % alumin ...
DOI:
10.1021/ie402539n

5. Coal Chemical Looping Gasification for Syngas Generation Using an Iron-Based Oxygen Carrier

Author:
Guo Qingjie; Cheng Yu; Liu Yongzhuo; Jia Weihua; Ryu Ho-Jung
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 78-86
ISSN:
1520-5045
Subject:
X-ray diffraction; calcium oxide; carbon; coal; combustion; engineering; ferric oxide; ferrous oxide; fluidized beds; gasification; hydrogen; hydrogen sulfide; models; oxygen; reaction mechanisms; steam; synthesis gas
Abstract:
... The chemical-looping gasification (CLG) of coal is a clean and effective technology for syngas generation. Sharing principles with chemical-looping combustion (CLC), CLG also uses oxygen carriers to transfer lattice oxygen to the fuel. Investigations into CLG with different O/C ratios are carried out in a fluidized bed reactor with steam used as the gasification–fluidization medium. The effect of ...
DOI:
10.1021/ie401568x

6. Comparative Studies on the Solvent Quality and Atmosphere Humidity for Electrospinning of Nanoporous Polyetherimide Fibers

Author:
Fashandi Hossein; Karimi Mohammad
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 235-245
ISSN:
1520-5045
Subject:
engineering; nanopores; physical phases; porosity; relative humidity; solvent drying; solvents; temperature; viscoelasticity
Abstract:
... Implications regarding requirements of performing a successive electrospinning and producing nanoporous polyetherimide (PEI) fibers are discussed through electrospinning PEI solutions of three nonvolatile solvents, that is, dimethylforamide (DMF), dimethylacetamide (DMAc), and N-methyl-2-pyrrolidone (NMP), under atmospheres of constant temperature and varying levels of relative humidity (RH). The ...
DOI:
10.1021/ie4028846

7. Complex Extraction of Phenol and Cresol from Model Coal Tar with Polyols, Ethanol Amines, and Ionic Liquids Thereof

Author:
Meng Hong; Ge Chang-Tao; Ren Nan-Nan; Ma Wen-Yan; Lu Ying-Zhou; Li Chun-Xi
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 355-362
ISSN:
1520-5045
Subject:
acetates; chemistry; chlorides; choline; coal tar; engineering; ethanol; formates; glycerol; ionic liquids; models; oils; phenols; temperature; toluene
Abstract:
... To develop a greener process for reclaiming phenolic compounds from low temperature coal tar, extractive performance of twelve extractants, including mono-, di-, and triethanol amines (MEA, DEA, TEA), six protonated ionic liquids (ILs) thereof with formate (FA) or acetate (Ac) anion, choline chloride, and two polyols (glycol, glycerol), were studied at varying conditions, along with the back extra ...
DOI:
10.1021/ie402599d

8. Computational Fluid Dynamics Modeling of Hydrodynamics of a New Type of Fixed Valve Tray

Author:
Li Xingang; Yang Na; Sun Yongli; Zhang Luhong; Li Xuegang; Jiang Bin
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 379-389
ISSN:
1520-5045
Subject:
engineering; equations; hydrodynamics; liquids; models; momentum; surface tension; trays
Abstract:
... A three-dimensional computational fluid dynamics (CFD) model was developed to predict the hydrodynamics of a new type of fixed valve tray. The model considered gas- and liquid-flow within the Eulerian framework in which both phases were treated as interpenetrating continuum having separate transport equations. Interphase momentum transfer term was employed for describing the interfacial forces bet ...
DOI:
10.1021/ie400408u

9. Controlling and Formation Mechanism of Oxygen-Containing Groups on Graphite Oxide

Author:
Liu Zhiting; Duan Xuezhi; Zhou Xinggui; Qian Gang; Zhou Jinghong; Yuan Weikang
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 253-258
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; engineering; epoxides; graphene; guidelines; moieties; nuclear magnetic resonance spectroscopy; oxidants; stable isotopes; zeta potential
Abstract:
... Controllable synthesis of graphite oxide (GO) for targeted surface properties is of great importance for its versatile applications. For this purpose, GO samples were prepared with different amounts of oxidant and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, ¹³C cross-polarization with total sideband suppression magic-angle-spinning nuclear magnetic resonance, X-ray ...
DOI:
10.1021/ie403088t

10. Economic and Control Performance of a Fluid Catalytic Cracking Unit: Interactions between Combustion Air and CO Promoters

Author:
Wang Rui; Luo Xionglin; Xu Feng
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 287-304
ISSN:
1520-5045
Subject:
air; air flow; catalytic cracking; combustion; controllers; dynamic models; economics; temperature
Abstract:
... The presence of CO combustion promoters significantly affects the heterogeneous CO combustion in the regenerator of a fluid catalytic cracking (FCC) unit. Neglecting the quantitative correlation between the heterogeneous CO combustion and the amount of added CO combustion promoters in the previous models makes it impossible to predict the steady-state and the dynamic behaviors of the system with r ...
DOI:
10.1021/ie401777n

11. Effect of Glass Fibers with Different Surface Properties on the Morphology and Properties of Polyamide 6/Poly(butylene terephthalate) Blends

Author:
Wang Li; Guo Zhao-Xia; Yu Jian
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 206-213
ISSN:
1520-5045
Subject:
alkali tolerance; chemistry; encapsulation; engineering; glass fibers; polyamides; temperature
Abstract:
... The morphology and properties of polyamide 6 (PA6)/poly(butylene terephthalate) (PBT) blends filled by three types of glass fibers (GF) with different surface properties were investigated. The GF were unmodified or surface-modified for PA6 or PBT, denoted as GF(Pris), GF(PA6), and GF(PBT), respectively. The incorporation of 15 wt % of GF with different surface properties all led to a transition fr ...
DOI:
10.1021/ie4026133

12. Effect of Small Amount of Water on CO2 Bubble Behavior in Ionic Liquid Systems

Author:
Zhang Xin; Dong Haifeng; Bao Di; Huang Ying; Zhang Xiangping; Zhang Suojiang
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 428-439
ISSN:
1520-5045
Subject:
bubbles; carbon; carbon dioxide; deformation; engineering; ionic liquids; surface tension; viscosity; water content
Abstract:
... Adding a small amount of water to ionic liquids can greatly reduce the viscosities of ionic liquids, which is believed to be an effective and economical method to make ionic liquids being applied practically for carbon capture. However, how the water content influences the bubble behavior which is used to calculate transfer properties; this is important but has not been studied systematically. In ...
DOI:
10.1021/ie4020827

13. Exploring High Operating Conditions in the Ibuprofen Precipitation by Rapid Expansion of Supercritical Solutions Process

Author:
Montes A.; Litwinowicz A. A.; Gradl U.; Gordillo M. D.; Pereyra C.; Martínez de la Ossa E. J.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 474-480
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; crystal structure; engineering; ibuprofen; melting point; particle size; particle size distribution; raw materials; scanning electron microscopy; temperature
Abstract:
... Micronization of ibuprofen by a rapid expansion of supercritical solutions (RESS) process has been explored for a wide range of operating conditions, including temperatures above the melting point of ibuprofen. Morphologies, particle sizes (PSs), and particle size distributions (PSDs) have been analyzed by scanning electron microscopy and the crystallinity has been evaluated by X-ray diffraction m ...
DOI:
10.1021/ie402408j

14. High Solubilities for Methane, Ethane, Ethylene, and Propane in Trimethyloctylphosphonium Bis(2,4,4-trimethylpentyl) Phosphinate ([P8111][TMPP])

Author:
Liu Xiangyang; Ruiz Elia; Afzal Waheed; Ferro Víctor; Palomar José; Prausnitz John M.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 363-368
ISSN:
1520-5045
Subject:
cations; engineering; ethane; ethylene; ionic liquids; methane; prediction; propane; solubility
Abstract:
... Solubilities are reported for methane, ethane, ethylene, and propane in trimethyloctylphosphonium bis(2,4,4-trimethylpentyl) phosphinate [P8111][TMPP] from 299 to 323 K up to 4 MPa. Consistent with prediction of COSMO-RS, [P8111][TMPP] shows large solubilities for all four hydrocarbons. Contrary to solubility data in conventional ionic liquids, in [P8111][TMPP] the solubility for ethane is higher ...
DOI:
10.1021/ie402677t

15. Industrial Application of a Continuous-Time Scheduling Framework for Process Analysis and Improvement

Author:
Hazaras Matthew J.; Swartz Christopher L. E.; Marlin Thomas E.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 259-273
ISSN:
1520-5045
Subject:
case studies; chemistry; engineering; food processing plants; industrial applications; issues and policy; models
Abstract:
... We investigate the potential benefits of applying short-term continuous-time scheduling optimization to an industrial multiproduct food processing plant. The facility exhibits several unique production policies that are not supported by current continuous-time scheduling models. Several extensions to a general global event continuous-time scheduling model are proposed to address these limitations. ...
DOI:
10.1021/ie4006904

16. Investigation of the Etching of Silicon under Subcritical Water Conditions

Author:
González-Pereyra Néstor G.; Glasgow William; Parenzan Alexander; Sharp Julia L.; Mefford O. Thompson
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 173-181
ISSN:
1520-5045
Subject:
activation energy; engineering; physicochemical properties; potassium hydroxide; silicon; temperature
Abstract:
... Herein, we present a study investigating the reaction conditions to wet etch monocrystalline silicon in the subcritical region of water, specifically from 200 to 300 °C. In the subcritical region there is a departure of thermodynamic, transport, and chemical properties from normal conditions. This has the potential to affect the reaction paths for the dissolution of silicon, by modifying the local ...
DOI:
10.1021/ie4024337

17. Investigation of the Tribological Properties of Two Different Layered Sodium Silicates Utilized as Solid Lubrication Additives in Lithium Grease

Author:
Zhang Xiaosheng; Sun Weichao; Ma Huijuan; Xu Hong; Dong Jinxiang
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 182-188
ISSN:
1520-5045
Subject:
X-ray diffraction; additives; chemistry; energy-dispersive X-ray analysis; engineering; friction; lithium; lubrication; scanning electron microscopy
Abstract:
... Layered sodium silicates β-Na₂Si₂O₅ and kanemite were synthesized via facile methods under mild conditions. The tribological properties of β-Na₂Si₂O₅ and kanemite utilized as additives in lithium grease were evaluated with a four-ball tester under different experimental conditions. The maximum nonseizure load value of 5.0 wt % β-Na₂Si₂O₅ grease jumped from 353 N (the base grease) to 1568 N. Howeve ...
DOI:
10.1021/ie402481u

18. Ionic Imprinted Silica-Supported Hybrid Sorbent with an Anchored Chelating Schiff Base for Selective Removal of Cadmium(II) Ions from Aqueous Media

Author:
Fan Hong-Tao; Liu Jin-Xiu; Yao Hui; Zhang Zhi-Gang; Yan Feng; Li Wen-Xiu
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 369-378
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; adsorption; binding capacity; cadmium; desorption; engineering; equations; ions; ligands; models; nitrogen; pH; scanning electron microscopy; schiff bases; sol-gel processing; sorbents; sorption isotherms; temperature; thermodynamics; thermogravimetry
Abstract:
... A novel Cd(II)-ion-imprinted silica-supported hybrid sorbent functionalized with tetradentate Schiff bases ligands derived from 2-thiophenecarboxaldehyde and 3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane for the selective removal of Cd(II) ions from aqueous media had been synthesized by a surface-imprinting technique in conjunction with a sol–gel process and characterized by scanning e ...
DOI:
10.1021/ie4027814

19. Iterative Multiscale Computational Fluid Dynamics–Single-Particle Model for Intraparticle Transfer and Catalytic Hydrogenation Reaction of Dimethyl Oxalate in a Fluidized-Bed Reactor

Author:
Zhu Ya-Ping; Chen Guo-Qiang; Luo Zheng-Hong
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 110-122
ISSN:
1520-5045
Subject:
catalysts; engineering; equations; fluid mechanics; fluidized beds; hydrogenation; models; oxalates; particle size; prediction
Abstract:
... In this work, the coupled model based on an iterative approach was developed to describe the flow behavior and catalytic hydrogenation of dimethyl oxalate (DMO) in a fluidized-bed reactor (FBR). First, a single-particle model (SPM) and a computational fluid dynamics (CFD) model were constructed, respectively. A set of hyperbola-like kinetics equations were included in the SPM. Subsequently, we ass ...
DOI:
10.1021/ie403227z

20. Modeling Pyrolysis of Charring Materials: Determining Kinetic Properties and Heat of Pyrolysis of Medium Density Fiberboard

Author:
Li K. Y.; Pau D. S. W.; Hou Y. N.; Ji J.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.1 pp. 141-149
ISSN:
1520-5045
Subject:
algorithms; biomass; burning; cellulose; differential scanning calorimetry; endothermy; engineering; heat production; hemicellulose; lignin; medium density fiberboards; models; pyrolysis; thermogravimetry
Abstract:
... For modeling the burning behavior of medium density fiberboard (MDF), pyrolysis kinetics was experimentally investigated through simultaneous differential scanning calorimetry and thermogravimetric analysis (SDT) experiments. Three decomposition models with up to four pyrolyzing components (phenol–formaldehyde (PF) resin, hemicellulose, cellulose, and lignin) were used to model the pyrolysis proce ...
DOI:
10.1021/ie402905z